Direct current power supply reversed connection preventing circuit with polarity distinguishing and control method thereof

A technology of anti-reverse connection circuit and DC power supply, which is applied in the field of control and can solve problems such as heat generation and energy consumption of DC power supply

Active Publication Date: 2011-05-11
MIDEA GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The first object of the present invention is to provide a DC power supply anti-reverse connection circuit with polarity distinction, so as to solve the t

Method used

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  • Direct current power supply reversed connection preventing circuit with polarity distinguishing and control method thereof
  • Direct current power supply reversed connection preventing circuit with polarity distinguishing and control method thereof
  • Direct current power supply reversed connection preventing circuit with polarity distinguishing and control method thereof

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] as attached figure 1 As shown, the specific method of this technical solution is: the input terminal has two polarities of positive pole Vi+ and negative pole Vi-, such as a solar cell, and its output is connected to the filter energy storage capacitor E1 of the front stage of the power conversion circuit; the positive pole Vi+ terminal And the negative pole Vi-end is divided into two branches, one branch is connected to the small current control part, and the other branch is connected to the large current conversion part.

[0033] The small current control part includes diodes D1 and / or D2, control unit power supply 1, drive circuit 4, main control MCU5 and other functional units; the anode of the diode D1 is connected to the reference ground of the small current control part, and its cathode is connected to the negative pole ...

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PUM

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Abstract

The invention relates to a control technology, in particular to a direct current power supply reversed connection preventing circuit with polarity distinguishing and a control method thereof. The direct current power supply reversed connection preventing circuit is divided into two branch circuits connected in parallel, wherein the first branch circuit comprises at least one large-current electronic switch unit circuit, and the direct current power supply is output by the large-current electronic switch unit circuit; the second branch circuit comprises at least one one-way conducting circuit,the direct current power supply is connected with the control unit power supply by the one-way conducting circuit, and the control unit power supply supplies power to a main control microprocessor; the output of the main control microprocessor is connected to the input end of a drive circuit; and the output end of the drive circuit is connected to the control end of the large-current electronic switch unit circuit. By dividing the direct current power supply of a controller circuit into two parts, a power supply of the control part of small current carries out reversed connection prevention by a diode, and the control of the converting part of large current realizes reversed connection preventing and impact preventing function in a combined way of a device with electronic switch function and a soft start circuit.

Description

technical field [0001] The invention relates to a control technology, in particular to a DC power supply anti-reverse connection circuit with polarity distinction and a control method thereof. Background technique [0002] The existing DC power supply anti-reverse connection technologies such as solar cell arrays are basically based on accessing diodes for anti-reverse connection, or using IGBT tubes with diodes, FET tubes, etc. as anti-reverse connection circuits. The circuit is relatively simple, but this type of circuit There is a problem: the extra energy of the solar energy is consumed during normal work, and the heat is serious. Contents of the invention [0003] The first object of the present invention is to provide a polarity-differentiated DC power supply anti-reverse connection circuit to solve the technical problems of the prior art anti-reverse connection circuit that consumes extra DC power supply energy and generates serious heat during normal operation. ...

Claims

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Application Information

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IPC IPC(8): H02H11/00
Inventor 王斌李强
Owner MIDEA GRP CO LTD
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