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Voltage conversion device

A voltage conversion and voltage input technology, applied in output power conversion devices, conversion equipment with intermediate conversion to AC, conversion of AC power input to DC power output, etc., can solve product risks, DCDC conversion module input and output matching Narrow voltage, DCDC conversion module cannot automatically exit the parallel or series structure, etc.

Inactive Publication Date: 2019-06-21
BEIJING SIFANG JIBAO AUTOMATION +1
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The currently applied DCDC conversion modules are usually realized by LLC resonant circuits. Due to the limitation of the topology of the LLC resonant circuit itself, the DCDC conversion modules often have the problem of narrow input and output matching voltages.
At the same time, when DCDC conversion modules are used in parallel or in series, they often have problems of low voltage margin and weak impact resistance
When the DCDC conversion module fails, also due to the limitation of the circuit topology, the DCDC conversion module cannot automatically withdraw from the parallel or series structure, which brings risks to the products using the DCDC conversion module

Method used

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Embodiment Construction

[0094] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0095] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0096] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...

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Abstract

The disclosure relates to a voltage conversion device comprising a primary side module, a transformer module and a secondary side module which are sequentially connected, wherein the primary side module comprises a primary side switching unit, a primary side transformer unit, a primary side voltage equalization resistance unit and a primary side control unit which are sequentially connected and isconfigured to convert the first DC voltage input to the voltage input side into a first AC voltage; the transformer module is connected to the primary side transformer unit for converting the first AC voltage into a second AC voltage; the secondary side module comprises a secondary side transformer unit, a secondary side switching unit and a secondary side control unit which are sequentially connected and is configured to convert the second AC voltage into a second DC voltage and input the second DC voltage to the voltage output side. The device provided by the disclosure realizes DC-to-DC voltage conversion through mutual cooperation between three modules, and has the advantages such as high stability, high safety and high startup success rate.

Description

technical field [0001] The present disclosure relates to the technical field of power electronics, in particular to a voltage conversion device. Background technique [0002] A DC-DC (DCDC) converter is a common voltage conversion device that can be widely used as a module in DC-type products such as DC charging piles or DC solid-state transformers. [0003] Currently applied DCDC conversion modules are usually implemented by LLC resonant circuits. Due to the limitation of the topology of the LLC resonant circuit itself, DCDC conversion modules often have the problem of narrow input and output matching voltages. At the same time, when the DCDC conversion modules are used in parallel or in series, problems of low voltage margin and weak shock resistance often occur. When the DCDC conversion module fails, also due to the limitation of the circuit topology, the DCDC conversion module cannot automatically withdraw from the parallel or series structure, which brings risks to pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/22H02M7/5387H02M7/219H02M1/32
Inventor 王立超王皆庆杨永建王文翠
Owner BEIJING SIFANG JIBAO AUTOMATION
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