CN110677035A - 一种电容均压电路 - Google Patents

一种电容均压电路 Download PDF

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Publication number
CN110677035A
CN110677035A CN201910946851.8A CN201910946851A CN110677035A CN 110677035 A CN110677035 A CN 110677035A CN 201910946851 A CN201910946851 A CN 201910946851A CN 110677035 A CN110677035 A CN 110677035A
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voltage
triode
sharing
resistor
electrolytic capacitor
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刘军
蒋中为
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SHENZHEN GOLD POWER TECHNOLOGY Co Ltd
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SHENZHEN GOLD POWER TECHNOLOGY Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0048—Circuits or arrangements for reducing losses
    • 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
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

本发明公开了一种电容均压电路，包括串连在总线Bus与地之间的电解电容C1和电解电容C2；还包括三极管Q1、三极管Q2、均压电阻R1、均压电阻R6、分压电阻R10、分压电阻R11；三极管Q1为NPN型三极管、三极管Q2为PNP三极管；三极管Q1的集电极和基极分别通过均压电阻R1和分压电阻R10接总线Bus，三极管Q1的发射极和基极分别三极管Q2的发射极和基极相连，三极管Q2的集电极通过均压电阻R6接地，分压电阻R11设置在三极管Q2的基极与地之间，三极管Q1的发射极与三极管Q2的发射极相连的公共端接均压输出V2。本发明由于具有均压电阻控制电路，可以将功耗降低到很小，满足用户的需要。

Description

一种电容均压电路
技术领域
本发明涉及一种电容均压电路。
背景技术
随着低碳节能概念的普及，我们对电源效率越来越高，使我们电源自身功耗就要少。
目前业界，高压电容串联，如图1所示，两个电解电容C1和C2串连在总线Bus与地之间，因每个铝电解电容漏电流值是不一样的，即两极间等效直流电阻是不同的，所以在串联的电容中分别并一个小电阻作为均压电阻，因为电容的等效直流电阻很大，如果并联一个小电阻的话，那么并联后的总阻值就会接近这个并联的小阻值，即均压电阻的阻值，由于均压电阻是相同的型号，所以这样就能保证电容的分压是接近的，但是这样就增加了功耗。
发明内容
本发明针对目前公知的电容均压电路，由于使用了均压电阻，使功耗增加，不能满足用户的需要的不足，提供一种电容均压电路，在电容均压电路中具有均压电阻控制电路，可以将功耗降低到很小，满足用户的需要。
本发明所采用的技术方案是：一种电容均压电路，包括串连在总线Bus与地之间的电解电容C1和电解电容C2，电解电容C1的阴极与电解电容C2的阳极相连形成均压输出V2，电解电容C1的阳极接总线Bus，电解电容C2的阴极接地；还包括三极管Q1、三极管Q2、均压电阻R1、均压电阻R6、分压电阻R10、分压电阻R11；所述的三极管Q1为NPN型三极管、三极管Q2为PNP三极管；三极管Q1的集电极和基极分别通过均压电阻R1和分压电阻R10接总线Bus，三极管Q1的发射极和基极分别三极管Q2的发射极和基极相连，三极管Q2的集电极通过均压电阻R6接地，分压电阻R11设置在三极管Q2的基极与地之间，三极管Q1的发射极与三极管Q2的发射极相连的公共端接均压输出V2。
本发明由于具有均压电阻控制电路，可以将功耗降低到很小，满足用户的需要。
进一步的，上述的电容均压电路中：所述的分压电阻R10由分压电阻R2和分压电阻R3串连组成，分压电阻R11由分压电阻R4和分压电阻R5串连组成。
以下将结合附图和实施例，对本发明进行较为详细的说明。
附图说明
图1是电容串连连接图。
图2是本发明实施例1中的均压电阻控制电路图。
图3是本发明实施例1的电容均压电路图。
具体实施方式
实施例1，本实施例是一种目前分别在电解电容两端并联均压电阻的基础上，采用了均压控制电路的电容均压电路，如图2和图3所示，一种电容均压电路，包括串连在总线Bus与地之间的电解电容C1和电解电容C2，电解电容C1的阴极与电解电容C2的阳极相连形成均压输出V2，电解电容C1的阳极接总线Bus，电解电容C2的阴极接地；在电解电容C1的两端并联均压电阻R1、在电解电容C2的两端并联均压电阻R6，本实施例中，在均压电阻R1和均压电阻R6的基础上，还包括三极管Q1、三极管Q2、分压电阻R10、分压电阻R11；利用三极管Q1、三极管Q2组成图腾柱来控制两个均压电阻。其中，三极管Q1为NPN型三极管、三极管Q2为PNP三极管；三极管Q1的集电极和基极分别通过均压电阻R1和分压电阻R10接总线Bus，三极管Q1的发射极和基极分别三极管Q2的发射极和基极相连，三极管Q2的集电极通过均压电阻R6接地，分压电阻R11设置在三极管Q2的基极与地之间，三极管Q1的发射极与三极管Q2的发射极相连的公共端接均压输出V2。在实践过程中，分压电阻R10由分压电阻R2和分压电阻R3串连组成，分压电阻R11由分压电阻R4和分压电阻R5串连组成。如图3所示。
如图3所示，图腾上下三极管分别是NPN三极管Q1、PNP三极管Q2，分压电阻由电阻R2、R3、R4、R5,均压电阻R1、R6,串联的电解电容C1、电解电容C2。V1点成为BUS总线中点电压，电解电容C1、电解电容C2串联中点V2,当电解电容C1、电解电容C2漏电流引起分压不一致时，当V2点电压高于中点电压V1，三极管Q2导通来均压，当V2低于V1电压时三极管Q1导通来均压。只有不均压时才接入电阻，从而达到目的。

Claims (2)

1.一种电容均压电路，包括串连在总线Bus与地之间的电解电容C1和电解电容C2，电解电容C1的阴极与电解电容C2的阳极相连形成均压输出V2，电解电容C1的阳极接总线Bus，电解电容C2的阴极接地；其特征在于：还包括三极管Q1、三极管Q2、均压电阻R1、均压电阻R6、分压电阻R10、分压电阻R11；所述的三极管Q1为NPN型三极管、三极管Q2为PNP三极管；三极管Q1的集电极和基极分别通过均压电阻R1和分压电阻R10接总线Bus，三极管Q1的发射极和基极分别三极管Q2的发射极和基极相连，三极管Q2的集电极通过均压电阻R6接地，分压电阻R11设置在三极管Q2的基极与地之间，三极管Q1的发射极与三极管Q2的发射极相连的公共端接均压输出V2。
2.根据权利要求1所述的电容均压电路，其特征在于：所述的分压电阻R10由分压电阻R2和分压电阻R3串连组成，分压电阻R11由分压电阻R4和分压电阻R5串连组成。
CN201910946851.8A 2019-10-07 2019-10-07 一种电容均压电路 Pending CN110677035A (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205566112U (zh) * 2016-05-04 2016-09-07 余玉兰 变频器用电容串联电压平衡电路
WO2017201658A1 (zh) * 2016-05-23 2017-11-30 深圳市锐明技术股份有限公司 一种设备掉电保护电路
CN206992934U (zh) * 2017-06-26 2018-02-09 杭州奥能电源设备有限公司 多电容串联均压电路
CN107707111A (zh) * 2017-11-24 2018-02-16 威创集团股份有限公司 一种电容均压电路及线路
CN210669890U (zh) * 2019-10-07 2020-06-02 深圳市金威源科技股份有限公司 一种电容均压电路

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205566112U (zh) * 2016-05-04 2016-09-07 余玉兰 变频器用电容串联电压平衡电路
WO2017201658A1 (zh) * 2016-05-23 2017-11-30 深圳市锐明技术股份有限公司 一种设备掉电保护电路
CN206992934U (zh) * 2017-06-26 2018-02-09 杭州奥能电源设备有限公司 多电容串联均压电路
CN107707111A (zh) * 2017-11-24 2018-02-16 威创集团股份有限公司 一种电容均压电路及线路
CN210669890U (zh) * 2019-10-07 2020-06-02 深圳市金威源科技股份有限公司 一种电容均压电路

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