CN102386749A - Medium high frequency inverted power supply anti-discharge bus structure - Google Patents
Medium high frequency inverted power supply anti-discharge bus structure Download PDFInfo
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- CN102386749A CN102386749A CN2011103816291A CN201110381629A CN102386749A CN 102386749 A CN102386749 A CN 102386749A CN 2011103816291 A CN2011103816291 A CN 2011103816291A CN 201110381629 A CN201110381629 A CN 201110381629A CN 102386749 A CN102386749 A CN 102386749A
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- series connection
- insulation board
- negative pole
- high frequency
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Abstract
The invention relates to a medium high frequency inverted power supply anti-discharge bus structure comprising an electrolytic capacitor series connection group formed by connecting two electrolytic capacitors in series by virtue of a series connection bus, wherein each electrolytic capacitor is respectively provided with two screws, the negative pole of the electrolytic capacitor series connection group is connected with a negative pole bus, the positive pole of the electrolytic capacitor series connection group is connected with a positive pole connecting plate and a positive pole bus, a first insulation board is arranged between the positive pole bus and the negative pole bus, the area of the first insulation board is larger than the coincident area when the positive pole bus, the negative pole bus and the series connection bus are arranged in an appressed manner, a plastic sheet is arranged above the series connection bus, a second insulation board is arranged above the positive pole bus, and the area of the second insulation board is larger than that of the positive pole bus. A phenomenon that the creep distance between buses is reduced or short circuit is caused can not be caused even when the medium high frequency inverted power supply anti-discharge bus structure is used in conductive dust and conductive fiber occasions.
Description
Technical field
The present invention relates to the anti-discharge of a kind of medium-high frequency inverter bus structure.
Background technology
Inversion bus structure in the medium-high frequency inverter mainly is in order to reduce the distributed inductance of inversion module and electrochemical capacitor, to avoid the higher-order of oscillation when inverse switch, causing inversion module to damage.The general smooth installation electrochemical capacitor of both positive and negative polarity bus that adopts inversion module is provided with epoxy insulating board in the middle of the positive and negative electrode inlet highway and plays buffer action.Above mounting means; The electric clearance and the creepage distance of inversion module both positive and negative polarity inlet highway and electrochemical capacitor interpolar are less; Exist in environment for use under the situation of conduction dust or conductive fiber (like carbon felt fiber), fashionable when wafing of the accumulation of conduction dust or conductive fiber, can cause the creepage distance between bus to diminish or short circuit; Thereby cause between bus or the both positive and negative polarity of electrochemical capacitor between will cause discharge, cause inversion partly to damage.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of when in the occasion that has conduction dust and conductive fiber, using, can not occur also that creepage distance between bus diminishes or the anti-bus structure that discharges of medium-high frequency inverter of short circuit phenomenon.
For addressing the above problem; The technical scheme that the present invention adopts is: the anti-discharge of medium-high frequency inverter bus structure; Comprise: through the electrochemical capacitor series that the series connection bus is connected in series and forms, be respectively arranged with two screws by two electrochemical capacitors on each electrochemical capacitor, the negative pole of electrochemical capacitor series is connected with the negative pole bus; The positive pole of electrochemical capacitor series is connected with positive electrode bus with anodal connecting plate; Be provided with first insulation board between positive electrode bus and the negative pole bus, the area of first insulation board is greater than the coincidence area of positive electrode bus, negative pole bus and the smooth installation of series connection bus, and the top of said series connection bus is provided with plastic sheet; The top of positive electrode bus is provided with second insulation board, and the area of second insulation board is greater than positive electrode bus.
The outer cover of said series connection bus is equipped with heat-shrinkable T bush.
The outer cover of said screw is provided with insulating base, and the outer cover of insulating base is provided with insulating case.
The invention has the beneficial effects as follows: the anti-discharge of above-mentioned medium-high frequency inverter bus structure; Distributed inductance and distributed capacitance have been reduced; Can well be applicable to the medium-high frequency inverter; Whole bus structure has second epoxy plate+positive electrode bus, anodal connecting plate+first epoxy plate+negative pole bus, plastic sheet, series connection bus totally four layers of formation, isolates positive electrode bus and negative pole bus fully through insulating base, insulating case, plastic sheet, isolates the series connection bus fully with negative pole bus and anodal connecting plate simultaneously; Effectively stop conduction accumulation of dust or wafing of conductive fiber, reduce power failure into the electric discharge phenomena of the inversion bus that causes.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the plan structure sketch map of Fig. 1;
Fig. 3 is the plan structure sketch map of removing among Fig. 1 behind insulating case, screw, insulating base, second insulation board;
Fig. 4 is the plan structure sketch map of removing among Fig. 1 behind insulating case, screw, insulating base, second insulation board, positive electrode bus, first insulation board;
Fig. 5 is the plan structure sketch map of removing among Fig. 1 behind insulating case, screw, insulating base, second insulation board, positive electrode bus, first insulation board, the plastic sheet;
Among the figure: 1, electrochemical capacitor, 2, the negative pole bus, 3, the series connection bus, 4, anodal connecting plate, 5, plastic sheet, 6, first insulation board, 7, positive electrode bus, 8, second insulation board, 9, insulating base, 10, screw, 11, insulating case.
Embodiment
Through specific embodiment the anti-discharge of medium-high frequency inverter of the present invention bus structure is done further to describe in detail below.
Like Fig. 1, Fig. 2, shown in Figure 3, the anti-discharge of medium-high frequency inverter bus structure comprises: the electrochemical capacitor series that is connected in series and forms through series connection bus 3 by two electrochemical capacitors 1; Be respectively arranged with two screws 10 on each electrochemical capacitor 1, as shown in Figure 5, the negative pole of electrochemical capacitor series is connected with negative pole bus 2; The positive pole of electrochemical capacitor series is connected with positive electrode bus 7 with anodal connecting plate 4; Be provided with the coincidence area of the area of first insulation board, 6, the first insulation boards 6 between positive electrode bus 7 and the negative pole bus 2, increased the creepage distance between positive electrode bus 7 and the negative pole bus 2 greater than positive electrode bus 7, negative pole bus 2 and the 3 smooth installations of series connection bus; As shown in Figure 4; The top of said series connection bus 3 is provided with plastic sheet 5, increases the electric clearance between electrochemical capacitor 1 positive pole and the negative pole, prevents that conductive fiber from wafing between the positive and negative electrode of electrochemical capacitor 1 discharge fault to take place; The top of positive electrode bus 7 is provided with second insulation board 8; The area of second insulation board 8 covers positive electrode bus 7 fully, isolates greater than positive electrode bus 7, thereby has avoided the accumulation of conduction dust between positive electrode bus 7 and negative pole bus 2.
The outer cover of said series connection bus 3 is equipped with heat-shrinkable T bush; After heat-shrinkable T bush puts in place through heat shrink; With special tooling heat-shrinkable T bush is carried out perforate, be positioned at the external diameter of the heat-shrinkable T bush opening diameter of series connection bus 3 upper surfaces, thereby screw 10 can be passed greater than screw 10; Be positioned at the diameter of the heat-shrinkable T bush opening diameter of series connection bus 3 lower surfaces, make the metallic conduction position of series connection bus 3 expose and closely contact with negative pole with the positive pole of electrochemical capacitor 1 greater than screw 10 fixed terminals.
The outer cover of said screw 10 is provided with insulating base 9; Insulating base 9 be designed to the concave structure, the head of screw 10 is arranged in the cavity of insulating base 9, the outer cover of insulating base 9 is provided with insulating case 11; The screw 10 of electrochemical capacitor 1 different poles is isolated fully; Avoided the discharge between electrochemical capacitor 1 hold-down screw 10, the external diameter of insulating case 11 has been blocked the route of entry of dust greater than the installing hole that second epoxy plate is installed.
The anti-discharge of above-mentioned medium-high frequency inverter bus structure; Distributed inductance and distributed capacitance have been reduced; Can well be applicable to the medium-high frequency inverter; Whole bus structure has second epoxy plate+positive electrode bus 7, anodal connecting plate 4+ first epoxy plate+negative pole bus 2, plastic sheet 5, series connection bus 3 totally four layers of formation, isolates positive electrode bus 7 and negative pole bus 2 fully through insulating base 9, insulating case 11, plastic sheet 5, isolates series connection bus 3 and negative pole bus 2 and anodal connecting plate 4 fully simultaneously; Effectively stop conduction accumulation of dust or wafing of conductive fiber, reduce power failure into the electric discharge phenomena of the inversion bus that causes.
The above embodiments are the principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not is used to limit the present invention; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (3)
1. the medium-high frequency inverter is prevented the discharge bus structure; Comprise: by two electrochemical capacitors through the series connection bus electrochemical capacitor series that is connected in series and forms; Be respectively arranged with two screws on each electrochemical capacitor; The negative pole of electrochemical capacitor series is connected with the negative pole bus, and the positive pole of electrochemical capacitor series is connected with positive electrode bus with anodal connecting plate, is provided with first insulation board between positive electrode bus and the negative pole bus; It is characterized in that: the area of said first insulation board is greater than the coincidence area of positive electrode bus, negative pole bus and the smooth installation of series connection bus; The top of series connection bus is provided with plastic sheet, and the top of positive electrode bus is provided with second insulation board, and the area of second insulation board is greater than positive electrode bus.
2. the anti-discharge of medium-high frequency inverter according to claim 1 bus structure, it is characterized in that: the outer cover of said series connection bus is equipped with heat-shrinkable T bush.
3. the anti-discharge of medium-high frequency inverter according to claim 1 and 2 bus structure, it is characterized in that: the outer cover of said screw is provided with insulating base, and the outer cover of insulating base is provided with insulating case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110381629A CN102386749B (en) | 2011-11-28 | 2011-11-28 | Medium high frequency inverted power supply anti-discharge bus structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110381629A CN102386749B (en) | 2011-11-28 | 2011-11-28 | Medium high frequency inverted power supply anti-discharge bus structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102386749A true CN102386749A (en) | 2012-03-21 |
| CN102386749B CN102386749B (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110381629A Active CN102386749B (en) | 2011-11-28 | 2011-11-28 | Medium high frequency inverted power supply anti-discharge bus structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004266973A (en) * | 2003-03-04 | 2004-09-24 | Nichicon Corp | Inverter arrangement |
| JP2008099397A (en) * | 2006-10-10 | 2008-04-24 | Denso Corp | Smoothing capacitor module and power conversion device using the same |
| CN201601347U (en) * | 2010-02-10 | 2010-10-06 | 南京亚派科技实业有限公司 | Low-inductance stacking direct-current bus device |
| CN201838342U (en) * | 2010-10-14 | 2011-05-18 | 深圳巴斯巴科技发展有限公司 | Large-current rectifying module bus bar |
-
2011
- 2011-11-28 CN CN201110381629A patent/CN102386749B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004266973A (en) * | 2003-03-04 | 2004-09-24 | Nichicon Corp | Inverter arrangement |
| JP2008099397A (en) * | 2006-10-10 | 2008-04-24 | Denso Corp | Smoothing capacitor module and power conversion device using the same |
| CN201601347U (en) * | 2010-02-10 | 2010-10-06 | 南京亚派科技实业有限公司 | Low-inductance stacking direct-current bus device |
| CN201838342U (en) * | 2010-10-14 | 2011-05-18 | 深圳巴斯巴科技发展有限公司 | Large-current rectifying module bus bar |
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| Publication number | Publication date |
|---|---|
| CN102386749B (en) | 2012-10-03 |
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