Check patentability & draft patents in minutes with Patsnap Eureka AI!

CLLC synchronous rectification circuit and control method

A technology of synchronous rectification and synchronous rectifier tube, which can be used in control/regulation systems, electrical components, regulating electrical variables, etc., and can solve problems such as inaccuracy

Inactive Publication Date: 2019-07-16
LG ELECTRONICS CHINA RANDD CENT SHANGHAI CO LTD
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional scheme of synchronous rectification control by detecting voltage is not suitable for CLLC synchronous rectification control, which is not accurate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • CLLC synchronous rectification circuit and control method
  • CLLC synchronous rectification circuit and control method
  • CLLC synchronous rectification circuit and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0017] With the development of power electronics technology and battery technology, there are more and more applications requiring energy storage on the market, such as home photovoltaic energy storage systems, new energy vehicle energy storage systems, etc. As an important part of the energy storage system, the bidirectional DCDC circuit has been researched by more and more people. The traditional shifted full bridge circuit and the dual active bridge (DAB) circuit developed based on the shifted full bridge can realize bidirectional DC-DC conversion, but the efficiency is very low under light ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a CLLC synchronous rectification circuit and a control method. The synchronous rectification circuit comprises a primary side full-bridge bidirectional rectification circuit, aresonance circuit, a transformer and a secondary side full-bridge bidirectional rectification circuit, wherein the resonance circuit is composed of a primary side resonance capacitor, a primary side resonance inductor, a secondary side resonance inductor and a secondary side resonance capacitor; the transformer is arranged between the primary side resonance inductor and the secondary side resonance inductor; the circuit also comprises a secondary side current sensor and a secondary side controller, wherein the secondary side current sensor is arranged between the secondary side full-bridge bidirectional rectification circuit and the transformer and is used for detecting the current phase of the secondary side of the transformer; and the secondary side controller is connected with the secondary side full-bridge bidirectional rectification circuit and the secondary side current sensor, and is used for controlling a synchronous rectification tube in the secondary side full-bridge bidirectional rectification circuit to be switched on and off according to the relation between the bridge arm neutral point voltage phase of the secondary side full-bridge bidirectional rectification circuitand the current phase of the secondary side detected by the secondary side current sensor. According to the technical scheme, the synchronous rectification tube can be accurately controlled to be switched on and switched off.

Description

technical field [0001] The invention relates to the technical field of bidirectional DC-DC, in particular to a CLLC synchronous rectification circuit and a control method. Background technique [0002] In the traditional synchronous rectification scheme, a voltage sensor is added at both ends of the switch tube of the rectification circuit to detect the voltage at both ends of the switch tube to control the on and off status of the switch tube, such as detecting figure 1 The voltage between point C and bus+, or the voltage between C and D, etc., realizes the synchronous rectification control of the system. [0003] The traditional scheme of synchronous rectification control by detecting voltage is not suitable for CLLC synchronous rectification control and is not accurate. Contents of the invention [0004] An embodiment of the present invention provides a CLLC synchronous rectification circuit, which is used to accurately control the turn-on and turn-off of the synchrono...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02M3/335
CPCH02M3/33592Y02B70/10
Inventor 徐腾曹伟杰蒋亚娟沈杰彭培源
Owner LG ELECTRONICS CHINA RANDD CENT SHANGHAI CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com