Composite shielding device for driving circuit
A composite shielding and driving circuit technology, applied in the direction of magnetic field/electric field shielding, electrical components, etc., can solve the problems that high voltage interference cannot be isolated, electromagnetic interference cannot be completely shielded, etc., to increase creepage distance and electrical clearance, save space, meet Effect of Electrical Insulation Conditions
Active Publication Date: 2015-07-01
CRRC YONGJI ELECTRIC CO LTD
View PDF5 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0009] In order to solve the technical problem that the electromagnetic interference between the IGBT and the driving unit cannot be completely shielded and the high-voltage interference cannot be isolated, the present invention provides a driving circuit composite shielding device
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] A driving circuit composite shielding device, including a composite shielding plate 1, the composite shielding plate 1 is made of 6061 aluminum alloy with a profile of 1~1.5mm (1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm) thick metal layer 2, the thickness of the insulating material GPO-3 that is close to both sides of the metal layer 2 is 1~1.5mm (optional 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm) insulating layer 3 and an insulating protective film 4 compounded on the outer surface of the insulating layer 3; the outer surface of the composite shielding plate 1 is provided with a drive board installation hole 5; The extension is split with mounting pins 6 . figure 1 Each edge part of the middle composite shielding plate extends outwards, for example, the right side only partially extends outwards, while the left side extends outwards as a whole.
[0025] An insulating slot 7 is respectively fixed in the middle of the outer surface of the composite shielding plate 1 close...
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
Login to view more Abstract
The invention relates to a shielding and isolating technology between an IGBT (Insulated Gate Bipolar Translator) and a driving unit, in particular to a composite shielding device for the driving circuit. According to the composite shielding device, the technical problems that electromagnetic interference between the IGBT and the driving unit cannot be completely shielded and high-voltage interference cannot be isolated at present are solved. The composite shielding device for the driving circuit comprises a layer of metal shielding plate, two layers of insulating plates and an insulating protective film for performing pressing seal on the three layers of plates to form a whole; the metal shielding plate is produced by processing a 6061 aluminum-alloy sheet with the thickness of 1 to 1.5mm; insulating layers with the thickness of 1 to 1.5mm, which are made by processing insulating materials GPO-3, are tightly adhered to two sides of the metal shielding plate; a metal shielding layer and two insulating layers are enabled to form a whole by using the high-voltage-resisting insulating protective film in a pressing seal manner; a driving plate mounting hole is formed in the composite shielding plate; metal parts on the upper side, the lower side, the left side and the right side of the metal layer outwards extend in sections; mounting holes are formed in the corresponding extending parts. According to the composite shielding device disclosed by the invention, the interference of an alternating magnetic field on a low-voltage signal of the driving plate can be reduced, the working reliability of the IGBT is improved, and electrical voltage-resisting insulating conditions of 10,000V can be met.
Description
technical field [0001] The invention relates to a shielding insulation isolation technology between an IGBT and a driving unit, in particular to a composite shielding device for a driving circuit. Background technique [0002] With the continuous improvement of current and voltage levels, IGBT has become a rational working device in the converter device in the AC drive locomotive environment, and the opening and closing of high-voltage and high-current IGBT is the key to complete the function conversion of the power unit. The drive unit is used to control the IGBT switch and protect the IGBT, so the drive circuit has an important influence on the entire converter. The traction control unit Traction Control Unit (hereinafter referred to as TCU) sends a control signal to the drive circuit (drive board), and the drive circuit sends a signal to control the IGBT switch. The IGBT working status is transmitted to the TCU through the feedback signal of the drive board, and the fault...
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
Login to view more Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00
Inventor 牛勇管俊青代全业李相锋吴晓燕
Owner CRRC YONGJI ELECTRIC CO LTD
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap