Voltage conversion circuit of integrated vehicle-mounted charger

A technology of voltage conversion circuit and on-board charger, which is applied in the direction of output power conversion device, electrical components, and adjustment of electric variables, etc., and can solve the problems that cannot meet the requirements of circuit input voltage, etc.

Pending Publication Date: 2020-08-14
SHINRY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, whether it is a half-bridge LLC resonant circuit or a full-bridge LLC resonant circuit, there is such a problem that it cannot meet the increasingly higher input voltage requirements of the integrated vehicle charger.

Method used

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  • Voltage conversion circuit of integrated vehicle-mounted charger
  • Voltage conversion circuit of integrated vehicle-mounted charger
  • Voltage conversion circuit of integrated vehicle-mounted charger

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0036] Each will be described in detail below.

[0037] The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "include" and "have", as well as any variations thereof, are ...

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PUM

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Abstract

The invention discloses a voltage conversion circuit of an integrated vehicle-mounted charger. The voltage conversion circuit of the integrated vehicle-mounted charger comprises an input circuit, a transformer and an output circuit, the input circuit comprises a first sub-input circuit and a second sub-input circuit, and the transformer comprises a first primary winding, a second primary winding and a secondary winding. The input circuit is connected with the transformer, the transformer is connected with the output circuit, and the first sub-input circuit is connected with the second sub-input circuit in series; the first sub-input circuit is connected with a first port and a second port of the first primary winding, the second sub-input circuit is connected with a first port and a secondport of the second primary winding, and the secondary winding is connected with the output circuit. According to the embodiment of the invention, the adaptation range of the input voltage of the circuit can be improved, and the requirements of low-voltage and high-current output are met.

Description

technical field [0001] The present application relates to the technical field of circuit structures, in particular to a voltage conversion circuit for an integrated vehicle charger. Background technique [0002] The LLC resonant circuit is a circuit topology suitable for occasions with large conversion power, low output voltage, but large output current. High power conversion efficiency, power density and low electromagnetic interference make it widely used in various electronic products. At present, the common LLC resonant circuits in the voltage conversion circuit of the integrated on-board charger mainly include the following two types: a half-bridge LLC resonant circuit and a full-bridge LLC resonant circuit. [0003] In the prior art, both the half-bridge LLC resonant circuit and the full-bridge LLC resonant circuit have such a problem that they cannot meet the increasingly higher input voltage requirements of the integrated vehicle charger. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33569
Inventor 陈丽君赵德琦吴壬华
Owner SHINRY TECH
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