CN201113478Y - 一种双后备电源 - Google Patents

一种双后备电源 Download PDF

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Publication number
CN201113478Y
CN201113478Y CNU2007200645543U CN200720064554U CN201113478Y CN 201113478 Y CN201113478 Y CN 201113478Y CN U2007200645543 U CNU2007200645543 U CN U2007200645543U CN 200720064554 U CN200720064554 U CN 200720064554U CN 201113478 Y CN201113478 Y CN 201113478Y
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Prior art keywords
circuit
power supply
voltage stabilizing
power
battery
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CNU2007200645543U
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English (en)
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何水潇
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Hunan Greatwall Information Financial Equipment Co Ltd
Greatwall Information Industry Co Ltd
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Hunan Greatwall Information Financial Equipment Co Ltd
Greatwall Information Industry Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Stand-By Power Supply Arrangements (AREA)

Abstract

本实用新型公开了一种双后备电源，其特征在于：包括第一稳压电路、单向限流电路、超级电容器、第二稳压电路、电源切换电路、电池，所述第一稳压电路的输入端接外部直流电源，其输出端与电源切换电路相连，单向限流电路、超级电容器、第二稳压电路依次串接，单向限流电路的输入端接外部直流电源，第二稳压电路的输出端与电源切换电路相连，电池与电源切换电路相连。

Description

一种双后备电源
技术领域
本实用新型涉及一种双后备电源。
背景技术
现有的后备电源一般采用电池，停电时完全靠电池供电，这样电池使用时间相对较短。另外，实时时钟和掉电后需要保持数据的SRAM对某些电子系统来说是至关重要的，一旦它们被破坏将会导致系统的崩溃。因此，如何提高后备电源的可靠性及延长使用时间是急需解决的问题。
实用新型内容
为了解决现有后备电源存在的上述技术问题，本实用新型提供一种结构简单、可靠性、能延长电池使用时间的双后备电源。
本实用新型解决上述技术问题的技术方案是：包括第一稳压电路、单向限流电路、超级电容器、第二稳压电路、电源切换电路、电池，所述第一稳压电路的输入端接外部直流电源，其输出端与电源切换电路相连，单向限流电路、超级电容器、第二稳压电路依次串接，单向限流电路的输入端接外部直流电源，第二稳压电路的输出端与电源切换电路相连，电池与电源切换电路相连。
本实用新型的技术效果在于：本实用采用超级电容器和电池组成双后备电源，当外部直流电源VCC断电后的时间不超过设计时，由超级电容器供电，故电池电量被保持的时间较以前更长，相当于延长了电池使用时间。另外，双后备电源可防止电池失效时造成系统崩溃的灾难性事故发生，大大提高了电子系统的可靠性。
下面附图对本实用新型作进一步的说明。
附图说明
图1为本实用新型的结构示意图。
图2为本实用新型的电原理图。
具体实施方式
参见图1，本实用新型包括第一稳压电路、单向限流电路、超级电容器、第二稳压电路、电源切换电路、电池，外部直流电源一路经第一稳压电路稳压后送到电源切换电路，另一路经单向限流电路、超级电容器、第二稳压电路后送到电源切换电路，电池与电源切换电路相连。本实用新型是利用电池和超级电容器两种电能量存储介质存储的电能量对掉电后需要保护的电路进行供电的后备电源，电池提供的是长时效供电，超级电容器提供的是短时效供电。
参见图2，图2为本实用新型的电原理图。正常供电时V0＞V1＞V2，其工作原理如下：当外部直流电源正常供电时，外部直流电源供电。外部直流电源通过电源稳压芯片D1产生直流电源V0输出到电源切换电路；同时外部直流电源”通过单向限流电路给超级电容器C2充电，当电容器C2上的电压超过一定的值时，电源稳压芯片D2输出直流电源V1到电源切换电路；电池输出V2电源切换电路；电源切换电路比较V0、V1、V2的值后，发现V0电压最高切换到V0供电。
当外部直流电源断电后的时间不超过设计值时，电源切换电路切换到V1，供电由超级电容器供电。
当外部直流电源断电后的时间超过设计值时，电源切换电路切换到V2，由电池供电。

Claims (1)

1、一种双后备电源，其特征在于：包括第一稳压电路、单向限流电路、超级电容器、第二稳压电路、电源切换电路、电池，所述第一稳压电路的输入端接外部直流电源，其输出端与电源切换电路相连，单向限流电路、超级电容器、第二稳压电路依次串接，单向限流电路的输入端接外部直流电源，第二稳压电路的输出端与电源切换电路相连，电池与电源切换电路相连。
CNU2007200645543U 2007-09-25 2007-09-25 一种双后备电源 Expired - Lifetime CN201113478Y (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104092263A (zh) * 2014-07-25 2014-10-08 衢州迪升工业设计有限公司 多功能充电器电路
CN105337402A (zh) * 2015-11-26 2016-02-17 珠海许继电气有限公司 基于超级电容后备电源的dc5v双电源切换装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104092263A (zh) * 2014-07-25 2014-10-08 衢州迪升工业设计有限公司 多功能充电器电路
CN105337402A (zh) * 2015-11-26 2016-02-17 珠海许继电气有限公司 基于超级电容后备电源的dc5v双电源切换装置

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