CN2865092Y - Insulating structure of current mother row capable of reducing distributed inductance - Google Patents
Insulating structure of current mother row capable of reducing distributed inductance Download PDFInfo
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- CN2865092Y CN2865092Y CN 200520047090 CN200520047090U CN2865092Y CN 2865092 Y CN2865092 Y CN 2865092Y CN 200520047090 CN200520047090 CN 200520047090 CN 200520047090 U CN200520047090 U CN 200520047090U CN 2865092 Y CN2865092 Y CN 2865092Y
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- Prior art keywords
- insulated ring
- pole span
- diameter
- negative plate
- plate
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Abstract
The utility model discloses a current busbar insulation structure that can reduce distributed inductance, which comprises a positive plate and a negative plate, with an insulating plate between the positive plate and the negative plate; the positive plate, the insulating plate, and the negative plate are coupled together tightly. The positive plate or the negative plate is arranged with a connecting hole through which a connecting bolt can be inserted; the negative plate or the positive plate is arranged with a pole spacing hole accordingly; wherein, the structure further comprises a insulated ring; the cavity of the pole spacing hole is in a stepped form, with the aperture smaller at outer side and larger at inner side; the insulated ring is also in stepped form on the circumference, with the outer diameter matching the aperture of the pole spacing hole, so as to fit into the pole spacing hole tightly. The busbar insulation structure can effectively reduce the adverse effect of drilling to the busbar, reduce the voltage spike impact from the power semiconductor component connected to the busbar during the switching process, and improve system reliability. The utility model can also be used in a variety of DC busbar structures of electric or electronic switching circuits.
Description
Technical field
The utility model relates to a kind of current bus bar that is used for electronic power switching circuit, particularly a kind of insulation system that can reduce the electric current busbar of distributed inductance.
Background technology
The current bus bar that is used for motor drive controller at present mainly contains two kinds of forms, and a kind of is to adopt parallel copper bar as current bus bar, and this current bus bar has bigger distributed inductance; Another kind is to adopt stacked pole plate, and folder advances insulating barrier as current bus bar between pole plate, and this electric current busbar is connected to each other by bolt and power model.Because connecting bolt will pass positive and negative busbar and the insulating barrier between the two, thereby makes the insulation between the positive and negative busbar destroyed.Is the example (see figure 1) with negative plate near device, when connecting bolt passes positive plate and insulation board the negative terminal of negative plate and power model is interconnected, the connecting hole size of negative plate matches with the diameter of bolt, and the size in the pole span hole of positive plate will be considered the creepage distance between positive plate and the negative plate.Diameter when the pole span hole is Φ
1The respective aperture of insulation board is Φ
2(the bolt head diameter of bolt), Φ at this moment
1=Φ
2+ 2J, J should satisfy the creepage distance between the positive/negative plate of safety standard regulation.Creepage distance between the pole plate is relevant with voltage, insulating material and environment.Obtained in the power electronic equipment of this connected mode low-voltage using widely.But in the high pressure occasion, especially in the power electronic equipment of high-voltage large current, drive inverter, adopt such busbar to make and can produce following problem as high-voltage high-power motor:
(1) safety problem that causes of busbar distributed inductance increase: in high-pressure system, in order to guarantee the safety creepage distance between the positive and negative busbar, a side's who does not contact with bolt on positive plate/negative plate perforate must be enough greatly.If the devices such as power model that pole plate need connect are more and the pole plate area is limited, then these perforates will force the busbar path of current, cause the busbar distributed inductance to increase, make the power semiconductor that is connected in busbar in switching process, bear high due to voltage spikes and impact, increase the possibility that power model damages.
(2) the busbar conductive capability reduces the problems of excessive heat that causes: big perforate will force the busbar electric current to walk farther more narrow lane footpath on the positive/negative plate, cause that the busbar loss increases, and cause busbar overheated when serious, and system reliability is reduced.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of insulation system that can reduce the electric current busbar of distributed inductance is provided.
To achieve these goals, the technical solution of the utility model is: a kind of insulation system that can reduce the electric current busbar of distributed inductance, comprise positive plate and negative plate, be provided with insulating trip between positive plate and the negative plate, positive plate, insulating trip and negative plate three combine closely, described positive plate or negative plate are provided with the connecting hole that inserts for connecting bolt, negative plate or positive plate correspondingly are provided with the pole span hole, wherein, also comprise an insulated ring, described pole span hole inner chamber is a stairstepping, internal diameter be outside little in portion big; The periphery of described insulated ring also is step-like, and its external diameter is corresponding with the aperture in pole span hole, so that it is installed in the described pole span hole adaptedly.
Above-mentioned a kind of insulation system that can reduce the electric current busbar of distributed inductance, wherein, described pole span hole has secondary stairstepping endoporus, described insulated ring correspondingly is the secondary Crossed Circle, the diameter of bore in pole span hole is consistent with the dicyclo external diameter of insulated ring, after insulated ring was installed in the pole span hole, its bottom surface abutted against on the described insulating trip.
Above-mentioned a kind of insulation system that can reduce the electric current busbar of distributed inductance, wherein, the perforate of described insulating trip size is consistent with the diameter of bore of insulated ring.
Above-mentioned a kind of insulation system that can reduce the electric current busbar of distributed inductance wherein, can design insulated ring by computing formula, i.e. A 〉=J, and E+C+D 〉=J, wherein:
A is the big ring portion wall thickness mm of insulated ring;
C is the little ring portion wall thickness mm of insulated ring;
D be insulated ring little ring portion outer end to pole span outer end of hole portion apart from mm;
E be insulated ring little ring portion outer end to the bolt top apart from mm;
J is the positive plate of standard code and the creepage distance mm between the negative plate.
Also can design the diameter in pole span hole by computing formula, i.e. Φ
1=2C+ Φ
2, wherein:
Φ
1Being the diameter mm in pole span hole, also is the little ring portion diameter mm of insulated ring,
Φ
2Being the diameter of bore mm of insulated ring, also is the bolt head diameter mm of connecting bolt.
Above-mentioned a kind of insulation system that can reduce the electric current busbar of distributed inductance, wherein, described D=B-H, wherein:
B is the total height mm of insulated ring;
H is the thickness mm of positive plate or negative plate.
Described E=B+G-F
G is an insulating trip thickness;
F is bolt head height (comprises metallic gasket and loosen the bullet mat thickness).
The utility model adopts the insulation system of the electric current busbar that can reduce distributed inductance, can under the condition of the creepage distance that guarantees the electrical safety standard code, obviously reduce the diameter of busbar positive/negative plate perforate, specifically be exactly to reduce the busbar distributed inductance increase that perforate causes, reduce the due to voltage spikes of power semiconductor in switching process that is connected in busbar and impact, improve the reliability of system; Reduce the busbar conductive capability reduction that the busbar perforate causes, thereby improve the reliability and the performance of power electronic equipment.
Description of drawings
Fig. 1 is the cutaway view of prior art;
Fig. 2 is a cutaway view of the present utility model.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Referring to Fig. 2, the insulation system of a kind of electric current busbar perforate, comprise positive plate 1 and negative plate 3, be provided with insulating trip 2 between positive plate 1 and the negative plate 3, positive plate 1, insulating trip 2 and negative plate 3 threes combine closely, positive plate 1 or negative plate 3 are provided with the connecting hole that inserts for connecting bolt 5, negative plate 3 or positive plate 1 correspondingly are provided with the pole span hole, wherein, also comprise an insulated ring 4, pole span hole inner chamber is a stairstepping, internal diameter be outside little in portion big; The periphery of insulated ring 4 also is step-like, and its external diameter is corresponding with the aperture in pole span hole, so that it is installed in the described pole span hole adaptedly.
In one embodiment, negative plate 3 is provided with connecting hole 31, correspondingly be provided with pole span hole 11 on the positive plate 1, screw rod 51 diameters of the diameter of connecting hole 31 and connecting bolt 5 match, pole span hole 11 has secondary stairstepping endoporus, described insulated ring 4 correspondingly is the secondary Crossed Circle, the diameter of bore in pole span hole 11 is consistent with the dicyclo external diameter of insulated ring 4, after insulated ring 4 is installed in the pole span hole 11, its bottom surface abuts against on the described insulating trip 2, the little ring portion 41 of insulated ring 4 is located at the minor diameter of pole span hole 11 inner chambers, and big ring portion 42 is located at the large-diameter portion of pole span hole 11 inner chambers, and the height of the height of big ring portion 42 and the large-diameter portion of pole span hole 11 inner chambers matches.
Insulated ring 4 in the utility model is key parts in addition of the design, and it is related to the size in pole span hole on the electric current busbar, and can eliminate the safety problem that the electric current busbar occurs in using.Can design insulated ring 4 by computing formula, i.e. A 〉=J, E+C+D 〉=J, wherein: A is the big ring portion 42 wall thickness mm of insulated ring 4; C is the little ring portion 41 wall thickness mm of insulated ring 4; D be insulated ring 4 little ring portion 41 outer ends to 11 outer ends, pole span hole apart from mm; Be D=B-H, wherein: B is the total height mm of insulated ring 4; H is the thickness mm of positive plate 1 or negative plate 3; E be insulated ring 4 little ring portion 41 outer ends to bolt 5 tops apart from mm; Be E=B+G-F, wherein: G is insulating trip 2 thickness; F is bolt head 52 height (comprise metallic gasket and loosen the bullet mat thickness); J is the positive plate 1 of electrical safety standard code and the creepage distance mm between the negative plate 3.
Also can design the diameter in pole span hole by computing formula, i.e. Φ
1=2C+ Φ
2, wherein: Φ
1Being the diameter mm in pole span hole 11, also is the little ring portion 41 diameter mm of insulated ring 4; Φ
2Being the diameter of bore mm of insulated ring 4, also is the bolt head 52 diameter mm of connecting bolt 5.
If hypothesis J=7.1mm (IEC standard 60664-1, Vrms=500, Pollution Degree 3, MaterialGroup II),
H＝3mm，C＝2mm，G＝0.2mm，F＝9mm，Φ
2＝8mm。
Then can determine A 〉=7.1mm, B 〉=9mm, D 〉=5mm, Φ by the aforementioned calculation formula
1=12mm.With Structure Calculation Φ of the prior art
1=22.2mm.Through comparing, the utility model can reduce the diameter in pole span hole about 45%.
Claims (5)
1. insulation system that can reduce the electric current busbar of distributed inductance, comprise positive plate and negative plate, be provided with insulating trip between positive plate and the negative plate, positive plate, insulating trip and negative plate three combine closely, described positive plate or negative plate are provided with the connecting hole that inserts for connecting bolt, negative plate or positive plate correspondingly are provided with the pole span hole, it is characterized in that, also comprise an insulated ring; Described pole span hole inner chamber is a stairstepping, its aperture be outside little in portion big; The periphery of described insulated ring also is step-like, and its external diameter is corresponding with the aperture in pole span hole, so that it is installed in the described pole span hole adaptedly.
2. a kind of insulation system that can reduce the electric current busbar of distributed inductance according to claim 1, it is characterized in that, described pole span hole has secondary stairstepping endoporus, described insulated ring correspondingly is the secondary Crossed Circle, the diameter of bore in pole span hole is consistent with the dicyclo external diameter of insulated ring, after insulated ring was installed in the pole span hole, its bottom surface abutted against on the described insulating trip.
3. a kind of insulation system that can reduce the electric current busbar of distributed inductance according to claim 1 is characterized in that, the perforate size of described insulating trip is consistent with the diameter of bore of insulated ring.
4. a kind of insulation system that can reduce the electric current busbar of distributed inductance according to claim 1 is characterized in that, can design insulated ring by computing formula, i.e. A 〉=J, and E+C+D 〉=J, wherein:
A is the big ring portion wall thickness mm of insulated ring;
C is the little ring portion wall thickness mm of insulated ring;
D be insulated ring little ring portion outer end to pole span outer end of hole portion apart from mm;
E be insulated ring little ring portion outer end to the bolt top apart from mm;
J is the positive plate of standard code and the creepage distance mm between the negative plate;
Also can design the diameter in pole span hole by computing formula, i.e. Φ
1=2C+ Φ
2, wherein:
Φ
1Being the diameter mm in pole span hole, also is the little ring portion diameter mm of insulated ring,
Φ
2Being the diameter of bore mm of insulated ring, also is the bolt head diameter mm of connecting bolt.
5. a kind of insulation system that can reduce the electric current busbar of distributed inductance according to claim 4 is characterized in that, described D=B-H, wherein:
B is the total height mm of insulated ring;
H is the thickness mm of positive plate or negative plate;
Described E=B+G-F
G is an insulating trip thickness;
F is the bolt head height, comprises metallic gasket and loosens the bullet mat thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047090 CN2865092Y (en) | 2005-11-30 | 2005-11-30 | Insulating structure of current mother row capable of reducing distributed inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047090 CN2865092Y (en) | 2005-11-30 | 2005-11-30 | Insulating structure of current mother row capable of reducing distributed inductance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2865092Y true CN2865092Y (en) | 2007-01-31 |
Family
ID=37677544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520047090 Expired - Fee Related CN2865092Y (en) | 2005-11-30 | 2005-11-30 | Insulating structure of current mother row capable of reducing distributed inductance |
Country Status (1)
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|---|---|
| CN (1) | CN2865092Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237779A (en) * | 2010-04-28 | 2011-11-09 | 永济新时速电机电器有限责任公司 | Charging power device |
| CN103138600A (en) * | 2011-11-30 | 2013-06-05 | 永济新时速电机电器有限责任公司 | Compound bus bar |
| GB2539789A (en) * | 2015-05-22 | 2016-12-28 | Deere & Co | System or connector for voltage bus structures |
| CN113097769A (en) * | 2021-03-23 | 2021-07-09 | 华中科技大学 | High-voltage coaxial laminated hybrid busbar |
-
2005
- 2005-11-30 CN CN 200520047090 patent/CN2865092Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237779A (en) * | 2010-04-28 | 2011-11-09 | 永济新时速电机电器有限责任公司 | Charging power device |
| CN103138600A (en) * | 2011-11-30 | 2013-06-05 | 永济新时速电机电器有限责任公司 | Compound bus bar |
| GB2539789A (en) * | 2015-05-22 | 2016-12-28 | Deere & Co | System or connector for voltage bus structures |
| GB2539789B (en) * | 2015-05-22 | 2020-09-09 | Deere & Co | System or connector for voltage bus structures |
| CN113097769A (en) * | 2021-03-23 | 2021-07-09 | 华中科技大学 | High-voltage coaxial laminated hybrid busbar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI DAJUN AUTOMATION SYSTEM ENGINEERING CORP Free format text: FORMER OWNER: SHANGHAI KINWAY TECHNOLOGIES LNC. Effective date: 20070706 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070706 Address after: 201107 Shanghai City, Minhang District No. 2 Building 1 -A17 Ji He Lu Patentee after: Shanghai Kinway Technologies lnc. Address before: 200120 Shanghai Guo Shou Jing Road, Zhangjiang High Tech Park of Pudong New Area No. 351 Building No. 2 room 690-18 Patentee before: Shanghai Kinway Technologies lnc. |
|
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI DAJUN POWER CONTROL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANGHAI DAJUN AUTOMATIC SYSTEM PROJECT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201114, C105, building 189, building 188, building 2, No. 1, Chun Chun Road, Shanghai, Minhang District Patentee after: Shanghai Dajun Technologies, Inc. Address before: 201107 Shanghai City, Minhang District No. 2 Building 1 -A17 Ji He Lu Patentee before: Shanghai Kinway Technologies lnc. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070131 Termination date: 20141130 |
|
| EXPY | Termination of patent right or utility model |