CN114520200B - A high-strength insulating baffle for a flexible direct current converter valve power module - Google Patents
A high-strength insulating baffle for a flexible direct current converter valve power module Download PDFInfo
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- CN114520200B CN114520200B CN202210187987.7A CN202210187987A CN114520200B CN 114520200 B CN114520200 B CN 114520200B CN 202210187987 A CN202210187987 A CN 202210187987A CN 114520200 B CN114520200 B CN 114520200B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/32—Holders for supporting the complete device in operation, i.e. detachable fixtures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/12—Mountings, e.g. non-detachable insulating substrates
- H01L23/14—Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
- H01L23/145—Organic substrates, e.g. plastic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
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Abstract
本发明公开一种柔直换流阀功率模块用高强度绝缘挡板，包括挡板框架和加强翅片，挡板框架包括顶部连接板、两个侧连接板和底部加强筋板，顶部连接板的两端分别与两个侧连接板的上端连接，底部加强筋板的两端分别与两个侧连接板的下端连接，顶部连接板的板面与底部加强筋板的板面相互垂直，顶部连接板、两个侧连接板和底部加强筋板共同围设形成套接空间；加强翅片位于挡板框架的两侧，加强翅片与侧连接板连接，加强翅片沿侧连接板的长度方向延伸设置。本发明的高强度绝缘挡板，通过与功率模块散热器相连，实现快速安装和拆卸。采用聚合物一体成型工艺，通过控制聚合物中玻纤长度和占比，在保障电气性能的同时，提升结构强度，有效抵抗爆破力冲击。
The present invention discloses a high-strength insulating baffle for a flexible direct current converter valve power module, comprising a baffle frame and reinforcing fins. The baffle frame comprises a top connecting plate, two side connecting plates and a bottom reinforcing rib plate. The two ends of the top connecting plate are respectively connected to the upper ends of the two side connecting plates, the two ends of the bottom reinforcing rib plate are respectively connected to the lower ends of the two side connecting plates, the plate surface of the top connecting plate and the plate surface of the bottom reinforcing rib plate are perpendicular to each other, and the top connecting plate, the two side connecting plates and the bottom reinforcing rib plate are jointly enclosed to form a socket space; the reinforcing fins are located on both sides of the baffle frame, the reinforcing fins are connected to the side connecting plates, and the reinforcing fins are extended along the length direction of the side connecting plates. The high-strength insulating baffle of the present invention is connected to the power module radiator to achieve rapid installation and disassembly. By adopting a polymer one-piece molding process, by controlling the length and proportion of glass fibers in the polymer, the structural strength is improved while ensuring electrical performance, and the impact of explosive force is effectively resisted.
Description
Technical Field
The invention relates to the technical field of soft direct current converter valves, in particular to a high-strength insulating baffle for a power module of a soft direct current converter valve.
Background
In the field of flexible direct current transmission, a converter valve consists of a number of IGBT (Insulated Gate Bipolar Transistor ) power modules. Under special fault conditions (such as overvoltage of a power module, incorrect switching of a bypass switch and the like), an IGBT device can be broken down to cause the device to burst, and instantaneous burst air flow can bring substances inside or outside the device to splash. The splash has higher kinetic energy under the action of blasting force, and if the power module is ejected, the normal operation of other modules can be influenced. It is common practice in the industry to use metal or insulating panels to cover the module heads entirely.
The flexible direct current converter valve module head is covered completely, so that the panel not only enlarges the volume of the whole power module, but also increases the difficulty and time consumption of module maintenance, and is not beneficial to on-site operation and maintenance and component state observation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a high-strength insulating baffle for a flexible direct current converter valve power module, which is small in size, and can be independently covered on the head part of an intermediate radiator of the flexible direct current converter valve, so that the quick installation and disassembly are realized, the volume of the flexible direct current converter valve is prevented from being increased, the overhaul and state observation of the flexible direct current converter valve are not influenced, the strength of a structural member is improved while the electrical performance is ensured, and the blasting force impact can be effectively resisted.
The high-strength insulating baffle for the flexible direct current converter valve power module comprises a baffle frame and reinforcing fins, wherein the baffle frame comprises a top connecting plate, two side connecting plates and a bottom reinforcing rib plate, two ends of the top connecting plate are respectively connected with the upper ends of the two side connecting plates, two ends of the bottom reinforcing rib plate are respectively connected with the lower ends of the two side connecting plates, the plate surface of the top connecting plate is mutually perpendicular to the plate surface of the bottom reinforcing rib plate, and a sleeving space is formed by surrounding the top connecting plate, the two side connecting plates and the bottom reinforcing rib plate together;
The reinforcing fins are positioned on two sides of the baffle frame and connected with the side connecting plates, and extend along the length direction of the side connecting plates.
The high-strength insulating baffle for the flexible direct current converter valve power module is characterized in that a baffle frame is mounted on an intermediate radiator of the flexible direct current converter valve power module, a top connecting plate is abutted to the top of the intermediate radiator, two side connecting plates are respectively abutted to two sides of the intermediate radiator, a bottom reinforcing rib plate is abutted to the front end face of the intermediate radiator, the baffle frame is sleeved backwards from the front end face of the intermediate radiator to the intermediate radiator and then fixed, the baffle frame is convenient to mount and dismount, meanwhile, the bottom reinforcing rib plate is fixed with the front end face of the intermediate radiator, the volume of the baffle frame in the up-down direction is reduced, the reinforcing fins shield the IGBT module, the strength of a structural member is improved while the electrical performance is guaranteed, and the impact of blasting force can be effectively resisted.
Furthermore, the connection part of the bottom reinforcing rib plate and the side connecting plate adopts inclined transition, and the connection part of the bottom reinforcing rib plate and the side connecting plate forms an obtuse angle which is more than 120 degrees. The structural strength of the joint of the bottom reinforcing rib plate and the side connecting plate can be effectively improved.
Further, gentle direct current valve power module includes two limit radiators, middle radiator and two IGBTs, and two IGBTs centre gripping middle radiator jointly, and two limit radiators are located the outside of two IGBTs respectively, and baffle frame cover establishes to the tip of middle radiator, and middle radiator gets into the socket space, strengthens the IGBT that the fin covered middle radiator both sides.
Further, be equipped with first bolt hole on the top connecting plate, be equipped with the second bolt hole on the bottom deep floor, the axis of first bolt hole is perpendicular with the axis of second bolt hole, and the intermediate radiator corresponds first bolt hole and second bolt hole respectively and sets up the mounting hole. The baffle frame can be mounted to the middle radiator through bolts, and the baffle frame is convenient to mount and dismount.
Further, the reinforcing fin comprises a fin transverse plate and a fin vertical plate, one end of the fin transverse plate is vertically connected with the plate surface of the side connecting plate, the fin transverse plate extends along the length direction of the side connecting plate, and the fin vertical plate is vertically connected with the fin transverse plate. The fin transverse plate and the fin vertical plate cover the IGBT in a shielding manner, so that the impact of explosive force can be resisted.
Further, the connection part of the fin transverse plate and the side connecting plate adopts arc transition. And the connection strength of the connection part of the fin transverse plate and the side connection plate is enhanced.
Further, the number N of fin risers is n=a/2.2 in relation to the fin cross plate length a.
Further, the ratio of the fin cross plate width B1 to the fin riser width B2 is b1:b2= (8-12): (2-3), and B2 is greater than 2mm.
Further, the baffle frame and the reinforcing fins are integrally formed by a polymer, and the polymer comprises glass fibers and epoxy resin or unsaturated resin.
Further, the length of the glass fiber is 25-35mm, and the glass fiber accounts for 30-40% of the polymer. By controlling the length and the duty ratio of glass fibers in the polymer, the strength of the structural member is improved while the electrical performance is ensured, and the impact of the blasting force can be effectively resisted.
Compared with the prior art, the invention has the following beneficial effects:
The high-strength insulating baffle for the flexible direct current converter valve power module is connected with the power module radiator to realize quick installation and disassembly. By adopting the polymer integrated forming process and controlling the length and the duty ratio of glass fibers in the polymer, the strength of the structural member is improved while the electrical performance is ensured, and the impact of blasting force can be effectively resisted.
Drawings
Fig. 1 is a schematic structural view of a high-strength insulating baffle for a soft direct current converter valve power module according to the present invention.
Fig. 2 is an assembly schematic diagram of the high-strength insulating baffle and the soft direct current converter valve power module of the present invention.
Fig. 3 is a cross-sectional view of a high strength insulating barrier of the present invention.
Side radiator 1, middle radiator 2, IGBT3, baffle frame 4, top connection plate 41, first bolt holes 411, side connection plates 42, bottom reinforcing plate 43, second bolt holes 431, socket space 44, reinforcing fins 5, fin cross plates 51, fin risers 52.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
Examples
As shown in fig. 1, the present embodiment provides a high-strength insulating baffle for a soft direct current converter valve power module, which includes a baffle frame and reinforcing fins.
As shown in fig. 2, the soft direct current converter valve power module includes two side heat sinks 1, a middle heat sink 2 and two IGBTs 3, the two IGBTs clamp the middle heat sink together, and the two side heat sinks are respectively located at the outer sides of the two IGBTs.
As shown in fig. 1 and 2, the baffle frame 4 includes a top connecting plate 41, two side connecting plates 42 and a bottom reinforcing rib plate 43, two ends of the top connecting plate are respectively connected with upper ends of the two side connecting plates, two ends of the bottom reinforcing rib plate are respectively connected with lower ends of the two side connecting plates, the plate surfaces of the top connecting plate and the plate surfaces of the bottom reinforcing rib plate are mutually perpendicular, and the top connecting plate, the two side connecting plates and the bottom reinforcing rib plate enclose together to form a sleeving space 44.
As shown in fig. 1 and 2, the connection part of the bottom reinforcing rib plate and the side connecting plate adopts inclined transition, and the connection part of the bottom reinforcing rib plate and the side connecting plate forms an obtuse angle which is more than 120 degrees, so that the structural strength of the connection part of the bottom reinforcing rib plate and the side connecting plate can be effectively improved.
As shown in fig. 1 and 2, the baffle frame is sleeved to the end of the intermediate radiator, the intermediate radiator enters the sleeved space, and the reinforcing fins cover the IGBTs on both sides of the intermediate radiator. The top connecting plate is provided with a first bolt hole 411, the bottom reinforcing rib plate is provided with a second bolt hole 431, the axis of the first bolt hole is perpendicular to the axis of the second bolt hole, and the middle radiator is provided with mounting holes corresponding to the first bolt hole and the second bolt hole respectively. The baffle frame can be mounted to the middle radiator through bolts, and the baffle frame is convenient to mount and dismount.
As shown in fig. 1 and 3, the reinforcing fin 5 includes a fin cross plate 51 having one end connected perpendicularly to the plate surface of the side connection plate and a fin riser 52 extending in the longitudinal direction of the side connection plate and connected perpendicularly to the fin cross plate. The joint of the fin transverse plate and the side connecting plate adopts arc transition. The fin transverse plate and the fin vertical plate cover the IGBT in a shielding manner, so that the impact of explosive force can be resisted.
The number of fin risers N is n=a/2.2 in relation to the fin cross plate length a. In this example, A is 4.4mm and N is 2. The ratio of the fin transverse plate width B1 to the fin vertical plate width B2 is B1:B2= (8-12): (2-3), and B2 is more than 2mm. In this example, B2 is 2.5mm and B1 is 10mm.
The baffle frame and the reinforcing fins are integrally formed by adopting polymers, wherein the polymers comprise glass fibers and epoxy resin or unsaturated resin. The length of the glass fiber is 25-35mm, and the glass fiber accounts for 30-40% of the polymer. By controlling the length and the duty ratio of glass fibers in the polymer, the strength of the structural member is improved while the electrical performance is ensured, and the impact of the blasting force can be effectively resisted. In this example, the length of the glass fiber was 30mm, and the proportion of the glass fiber to the polymer was 35%.
The high-strength insulating baffle for the flexible direct current converter valve power module is characterized in that a baffle frame is mounted on an intermediate radiator of the flexible direct current converter valve power module, a top connecting plate is abutted to the top of the intermediate radiator, two side connecting plates are respectively abutted to two sides of the intermediate radiator, a bottom reinforcing rib plate is abutted to the front end face of the intermediate radiator, the baffle frame is sleeved backwards from the front end face of the intermediate radiator to the intermediate radiator and then fixed, the baffle frame is convenient to mount and dismount, meanwhile, the bottom reinforcing rib plate is fixed with the front end face of the intermediate radiator, the volume of the baffle frame in the up-down direction is reduced, the reinforcing fins shield the IGBT module, the strength of a structural member is improved while the electrical performance is guaranteed, and the impact of blasting force can be effectively resisted.
As described above, the present invention can be better realized, and the above-mentioned embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention, i.e. all equivalent changes and modifications made in accordance with the present invention are covered by the scope of the claims of the present invention.
Claims (10)
1. The high-strength insulating baffle for the flexible direct current converter valve power module is characterized by comprising a baffle frame and reinforcing fins, wherein the baffle frame comprises a top connecting plate, two side connecting plates and a bottom reinforcing rib plate, two ends of the top connecting plate are respectively connected with the upper ends of the two side connecting plates, two ends of the bottom reinforcing rib plate are respectively connected with the lower ends of the two side connecting plates, the plate surface of the top connecting plate is mutually perpendicular to the plate surface of the bottom reinforcing rib plate, and a sleeving space is formed by surrounding the top connecting plate, the two side connecting plates and the bottom reinforcing rib plate together;
The reinforcing fins are positioned on two sides of the baffle frame and connected with the side connecting plates, and extend along the length direction of the side connecting plates.
2. The high-strength insulating baffle for a flexible direct current converter valve power module according to claim 1, wherein the connection part of the bottom reinforcing rib plate and the side connecting plate adopts inclined transition, and the connection part of the bottom reinforcing rib plate and the side connecting plate forms an obtuse angle of more than 120 degrees.
3. The high-strength insulating baffle for a soft direct current converter valve power module according to claim 1, wherein the soft direct current converter valve power module comprises two side radiators, an intermediate radiator and two IGBTs, the two IGBTs clamp the intermediate radiator together, the two side radiators are respectively located at the outer sides of the two IGBTs, a baffle frame is sleeved to the end part of the intermediate radiator, the intermediate radiator enters a sleeving space, and reinforcing fins cover the IGBTs at the two sides of the intermediate radiator.
4. The high-strength insulating baffle for a flexible direct current converter valve power module according to claim 3, wherein the top connecting plate is provided with a first bolt hole, the bottom reinforcing rib plate is provided with a second bolt hole, the axis of the first bolt hole is perpendicular to the axis of the second bolt hole, and the intermediate radiator is provided with mounting holes corresponding to the first bolt hole and the second bolt hole respectively.
5. The high-strength insulating barrier for a flexible direct current converter valve power module according to claim 1, wherein the reinforcing fin comprises a fin cross plate and a fin riser, one end of the fin cross plate is vertically connected with the plate surface of the side connecting plate, the fin cross plate extends along the length direction of the side connecting plate, and the fin riser is vertically connected with the fin cross plate.
6. The high-strength insulating baffle for a flexible direct current converter valve power module according to claim 5, wherein the connection part of the fin transverse plate and the side connecting plate adopts arc transition.
7. The high-strength insulating barrier for a soft direct current converter valve power module according to claim 5, wherein the number N of fin risers is n=a/2.2 in relation to the fin cross plate length a.
8. The high strength insulating barrier for a flexible direct current converter valve power module of claim 5, wherein the ratio of the fin cross plate width B1 to the fin riser width B2 is b1:b2= (8-12): (2-3), and B2 is greater than 2mm.
9. The high-strength insulating barrier for a soft direct current converter valve power module according to claim 1, wherein the barrier frame and the reinforcing fins are integrally formed of a polymer including glass fiber and epoxy resin or unsaturated resin.
10. The high-strength insulating barrier for a soft direct current converter valve power module according to claim 9, wherein the length of the glass fiber is 25-35mm, and the proportion of the glass fiber in the polymer is 30-40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210187987.7A CN114520200B (en) | 2022-02-28 | 2022-02-28 | A high-strength insulating baffle for a flexible direct current converter valve power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210187987.7A CN114520200B (en) | 2022-02-28 | 2022-02-28 | A high-strength insulating baffle for a flexible direct current converter valve power module |
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| Publication Number | Publication Date |
|---|---|
| CN114520200A CN114520200A (en) | 2022-05-20 |
| CN114520200B true CN114520200B (en) | 2025-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210187987.7A Active CN114520200B (en) | 2022-02-28 | 2022-02-28 | A high-strength insulating baffle for a flexible direct current converter valve power module |
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| CN205753940U (en) * | 2016-05-13 | 2016-11-30 | 浙江正泰电器股份有限公司 | Converter and the seal of IGBT pipe binding post |
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| CN111994802A (en) * | 2020-08-14 | 2020-11-27 | 中国南方电网有限责任公司超高压输电公司 | Device is changed to gentle straight converter valve power module |
| CN113192910A (en) * | 2021-04-15 | 2021-07-30 | 常州易控汽车电子股份有限公司 | IGBT module heat radiation structure |
| CN113809937A (en) * | 2021-09-30 | 2021-12-17 | 深圳市聚能优电科技有限公司 | Installation structure of modular energy storage converter |
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| CN107731798A (en) * | 2017-09-08 | 2018-02-23 | 许继电气股份有限公司 | A kind of compression joint type power model valve section and valve segment frames |
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| CN114520200A (en) | 2022-05-20 |
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