CN105281152A - IGBT parallel busbar - Google Patents
IGBT parallel busbar Download PDFInfo
- Publication number
- CN105281152A CN105281152A CN201410276106.4A CN201410276106A CN105281152A CN 105281152 A CN105281152 A CN 105281152A CN 201410276106 A CN201410276106 A CN 201410276106A CN 105281152 A CN105281152 A CN 105281152A
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- Prior art keywords
- busbar
- ladder
- igbt
- level
- thickness
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Abstract
The invention discloses an IGBT parallel busbar. The busbar is designed into four steps which are a first step, a second step, a third step and a fourth step respectively; the busbar is provided with a plurality of fastener through holes which are located at the first step and are used for connecting IGBTs and inputting current; a plurality of hollowed-out U-shaped grooves which extend to the bottom of the busbar are arranged below the second step; a T-shaped hollowed-out structure is arranged below the third step; the busbar is provided with four fastener through holes which are used for outputting current and are located at the fourth step; and the thickness of a busbar portion below the T-shaped hollowed-out structure is half of the thickness of the second step or a busbar portion below the second step. With the IGBT parallel busbar adopted, the problem of current imbalance of the IGBTs can be solved, and the burnout of the IGBTs can be avoided, and overall use performance of corresponding devices or equipment can be improved.
Description
Technical field
The present invention relates to busbar technical field, particularly a kind of can the IGBT parallel busbar of current-sharing.
Background technology
Existing busbar is generally flat shape, when busbar uses, is fixed on busbar by each IGBT pipe by the fastener through holes on busbar, and the input current of each IGBT pipe then exports through the same current output terminal of busbar.Because each fastener through holes of IGBT pipe is different from the distance of the current output terminal of busbar, therefore the resistance of the busbar part be connected with each IGBT pipe is unequal, so there is the problem of the current-unbalance on each IGBT pipe, easily cause the IGBT pipe near busbar current output terminal overheated, seriously, the IGBT pipe near busbar current output terminal also can be caused to burn, thus affect the overall serviceability of corresponding device or equipment.
Summary of the invention
The object of the present invention is to provide a kind of IGBT parallel busbar, be intended to solve because the resistance of the busbar part be connected with each IGBT pipe is unequal and cause the problem of the current-unbalance on each IGBT pipe.
The present invention is achieved in that a kind of IGBT parallel busbar, and described busbar is designed to level Four ladder, is respectively first order ladder, second level ladder, third level ladder and fourth stage ladder;
The busbar of described first order ladder is provided with several for connecting the fastener through holes of IGBT and input current;
Be provided with several below the ladder of the described second level by " U " type groove emptied to busbar, described " U " type groove is between adjacent two described IGBT;
A T-shape hollow out is provided with below described third level ladder, below described T-shape hollow out busbar center on be provided with fastener through holes for connecting IGBT and input current, described T-shape hollow out to be positioned at described in two adjacent bottom busbar between " U " type groove;
The busbar of described fourth stage ladder is provided with four fastener through holes for output current;
Below described T-shape hollow out, busbar thickness is 1/2nd of busbar thickness below second level ladder or second level ladder, and described 3rd pole ladder busbar thickness is the summation of busbar thickness below busbar thickness and second level ladder or second level ladder below T-shape hollow out.
Further, the material of described busbar is copper or aluminium.
The invention has the beneficial effects as follows: compared with prior art, the level Four stepped design of IGBT parallel busbar of the present invention makes the resistance of the busbar part connected with each IGBT pipe all equal, solve in busbar use procedure, the unbalanced problem of electric current on each IGBT pipe, avoid burning of IGBT pipe, improve the overall serviceability of corresponding device or equipment.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of a kind of IGBT parallel busbar provided by the invention;
Fig. 2 is the vertical view of IGBT parallel busbar provided by the invention;
Fig. 3 is the profile of IGBT parallel busbar provided by the invention along the A-A direction of Fig. 2;
Fig. 4 is the path schematic diagram that the electric current of IGBT1 and IGBT2 on IGBT parallel busbar provided by the invention flows through IGBT parallel busbar.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Be illustrated in figure 1 the structural representation of a kind of IGBT parallel busbar provided by the invention, Fig. 2 is the vertical view of IGBT parallel busbar provided by the invention, Fig. 3 is the profile of IGBT parallel busbar provided by the invention along the A-A direction of Fig. 2, composition graphs 1, Fig. 2 and Fig. 3, a kind of IGBT parallel busbar provided by the invention, it is designed to level Four ladder, is respectively first order ladder 1, second level ladder 2, third level ladder 3 and fourth stage ladder 4;
The busbar of first order ladder 1 is provided with several for connecting the fastener through holes 5 of IGBT and input current;
Be provided with several below second level ladder 2 by " U " type groove emptied to busbar, " U " type groove is between adjacent two described IGBT;
A T-shape hollow out is provided with below third level ladder 3, below T-shape hollow out busbar center on be provided with fastener through holes 5 for connecting IGBT and input current, aforementioned T-shape hollow out to be positioned at described in two adjacent bottom busbar between " U " type groove;
The busbar of fourth stage ladder 4 is provided with four fastener through holes for output current;
Below above-mentioned T-shape hollow out, busbar 6 thickness is 1/2nd of busbar 7 thickness below second level ladder or second level ladder, and above-mentioned third level ladder busbar 8 thickness is the summation of busbar 7 thickness below busbar 6 thickness and second level ladder or second level ladder below T-shape hollow out.
The electric current being illustrated in figure 4 IGBT1 and IGBT2 on IGBT parallel busbar provided by the invention flows through the path schematic diagram of IGBT parallel busbar, and the electric current 9 wherein IGBT1 flowing through IGBT parallel busbar is the electric current 10 and electric current 11 sum that IGBT2 flow through IGBT parallel busbar; And IGBT2 flows through the electric current 10 of IGBT parallel busbar and the equal and opposite in direction of electric current 11, be 1/2nd of the electric current 9 IGBT1 flowing through IGBT parallel busbar, the electric current that third level ladder 3 flows through is IGBT1 flows through electric current 10 sum electric current 9 of IGBT parallel busbar and IGBT2 flowing through IGBT parallel busbar.
In the embodiment of the present invention, the material of above-mentioned busbar can be copper or aluminium.
The level Four stepped design of a kind of IGBT parallel busbar of the present invention makes the resistance of the busbar part connected with each IGBT pipe all equal, solve in busbar use procedure, the unbalanced problem of electric current on each IGBT pipe, avoid burning of IGBT pipe, improve the overall serviceability of corresponding device or equipment.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to technical spirit of the present invention, within the spirit and principles in the present invention, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection range all still belonging to technical solution of the present invention.
Claims (2)
1. an IGBT parallel busbar, is characterized in that: described busbar is designed to level Four ladder, is respectively first order ladder, second level ladder, third level ladder and fourth stage ladder;
The busbar of described first order ladder is provided with several for connecting the fastener through holes of IGBT and input current;
Be provided with several below the ladder of the described second level by " U " type groove emptied to busbar, described " U " type groove is between adjacent two described IGBT;
A T-shape hollow out is provided with below described third level ladder, below described T-shape hollow out busbar center on be provided with fastener through holes for connecting IGBT and input current, described T-shape hollow out to be positioned at described in two adjacent bottom busbar between " U " type groove;
The busbar of described fourth stage ladder is provided with four fastener through holes for output current;
Below described T-shape hollow out, busbar thickness is 1/2nd of busbar thickness below second level ladder or second level ladder, and described 3rd pole ladder busbar thickness is the summation of busbar thickness below busbar thickness and second level ladder or second level ladder below T-shape hollow out.
2. IGBT parallel busbar according to claim 1, is characterized in that: the material of described busbar is copper or aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276106.4A CN105281152A (en) | 2014-06-20 | 2014-06-20 | IGBT parallel busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276106.4A CN105281152A (en) | 2014-06-20 | 2014-06-20 | IGBT parallel busbar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105281152A true CN105281152A (en) | 2016-01-27 |
Family
ID=55149728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410276106.4A Pending CN105281152A (en) | 2014-06-20 | 2014-06-20 | IGBT parallel busbar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105281152A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3469464B2 (en) * | 1998-05-22 | 2003-11-25 | 東光株式会社 | Inverter transformer |
| US20110308834A1 (en) * | 2010-06-18 | 2011-12-22 | Fuji Electric Holdings Co., Ltd. | Laminated bus bar |
| CN202524040U (en) * | 2012-04-09 | 2012-11-07 | 中冶南方（武汉）自动化有限公司 | Laminated busbar fixing structure |
| CN203056828U (en) * | 2012-12-30 | 2013-07-10 | 北京科诺伟业科技有限公司 | IGBT parallel connection power-unit structure layout |
| CN103367284A (en) * | 2013-07-04 | 2013-10-23 | 株洲南车时代电气股份有限公司 | Double-L shaped current sharing stress-resistant IGBT (insulated gate bipolar transistor) module busbar terminal |
| CN203942117U (en) * | 2014-06-20 | 2014-11-12 | 深圳中德世纪新能源有限公司 | A kind of IGBT parallel busbar |
-
2014
- 2014-06-20 CN CN201410276106.4A patent/CN105281152A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3469464B2 (en) * | 1998-05-22 | 2003-11-25 | 東光株式会社 | Inverter transformer |
| US20110308834A1 (en) * | 2010-06-18 | 2011-12-22 | Fuji Electric Holdings Co., Ltd. | Laminated bus bar |
| CN202524040U (en) * | 2012-04-09 | 2012-11-07 | 中冶南方（武汉）自动化有限公司 | Laminated busbar fixing structure |
| CN203056828U (en) * | 2012-12-30 | 2013-07-10 | 北京科诺伟业科技有限公司 | IGBT parallel connection power-unit structure layout |
| CN103367284A (en) * | 2013-07-04 | 2013-10-23 | 株洲南车时代电气股份有限公司 | Double-L shaped current sharing stress-resistant IGBT (insulated gate bipolar transistor) module busbar terminal |
| CN203942117U (en) * | 2014-06-20 | 2014-11-12 | 深圳中德世纪新能源有限公司 | A kind of IGBT parallel busbar |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160127 |