CN222191367U - Current equalizing copper bar - Google Patents
Current equalizing copper bar Download PDFInfo
- Publication number
- CN222191367U CN222191367U CN202420566091.4U CN202420566091U CN222191367U CN 222191367 U CN222191367 U CN 222191367U CN 202420566091 U CN202420566091 U CN 202420566091U CN 222191367 U CN222191367 U CN 222191367U
- Authority
- CN
- China
- Prior art keywords
- current
- sharing
- connecting block
- fuse
- copper bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 28
- 239000010949 copper Substances 0.000 title claims abstract description 28
- 238000012423 maintenance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Fuses (AREA)
Abstract
The utility model discloses a current-sharing copper bar, wherein a connecting part is provided with a first connecting block used for being connected with a first fuse wire and a second connecting block used for being connected with a second fuse wire, the current-sharing part is provided with a first end connected with the connecting part and a second end used for being connected with an external cable, one side of the current-sharing part is provided with a first concave part, the other side of the current-sharing part is provided with a second concave part, and the size of a conducting path from the first connecting block to the second end is the same as that from the second connecting block to the second end. The first fuse and the second fuse are arranged in parallel, the current of the first fuse flows from the first connecting block to the first end of the current sharing part, flows from the first concave part to the second end, and the current of the second fuse flows from the second connecting block to the first end of the current sharing part, flows from the first concave part to the second end, so that the passing distances of two currents from the first end to the second end of the copper bar are the same, and the resistance values are the same, thereby enabling the current values flowing through the copper bar to be basically consistent.
Description
Technical Field
The utility model relates to the technical field of electrical elements, in particular to a current-sharing copper bar.
Background
The high-power inverter comprises a wind power converter, a photovoltaic inverter and the like, wherein an insulated gate bipolar transistor (IGBT Insul current sharing copper bar d G current sharing copper bar te Bipol current sharing copper bar r Tr current sharing copper bar nsistor) module is adopted as a key device, most of the IGBTs are used in parallel in the power module, however, once the phenomenon of uneven flow continuously occurs in the parallel use process of the IGBT modules, such as uneven flow of the connected copper bars, the IGBTs in the module bearing large current are easily damaged or fuses of the phase bearing large current are cut off, so that the service life of equipment is greatly reduced, and the maintenance cost is greatly increased.
Disclosure of utility model
Aiming at the problems, the utility model provides a current-sharing copper bar, which overcomes at least one defect.
The technical scheme includes that the current sharing copper bar comprises a connecting portion and a current sharing portion connected with the connecting portion, wherein the connecting portion is provided with a first connecting block used for being connected with a first fuse wire and a second connecting block used for being connected with a second fuse wire, the current sharing portion is provided with a first end connected with the connecting portion and a second end used for being connected with an external cable, one side of the current sharing portion is provided with a first concave portion, the other side of the current sharing portion is provided with a second concave portion, and the size of a conducting path from the first connecting block to the second end is the same as that from the second connecting block to the second end.
Optionally, the first connection block is provided with a first through hole for connecting with the first fuse, the second connection block is provided with a second through hole for connecting with the second fuse, and the size of a conductive path from the first through hole to the second end is the same as that of a conductive path from the second through hole to the second end.
Optionally, the first connection block and the second connection block are symmetrically arranged along the length of the first end.
Optionally, the current equalizing part has a first side and a second side, the first through hole is close to the first side, and the second through hole is close to the second side.
Optionally, one end of the first side is connected with the first end, the other end of the first side is bent towards the direction of the second side to form a first concave part and then connected with the second end, one end of the second side is connected with the first end, and the other end of the second side is bent towards the direction of the first side to form a second concave part and then connected with the second end.
Optionally, the connecting portion is vertically connected with the current equalizing portion.
Optionally, the connection part of the connection part and the flow equalizing part is in arc connection.
Optionally, the corners around the connecting part and the corners around the current equalizing part are rounded.
The utility model has the beneficial effects that the first fuse wire and the second fuse wire are arranged in parallel, the current of the first fuse wire flows from the first connecting block to the first end of the current equalizing part, flows from the second connecting block to the second end through the first concave part, and flows from the second connecting block to the first end of the current equalizing part, and flows from the first concave part to the second end through the first concave part, so that the passing distances of two current from the first end to the second end of the copper bar are the same, and the resistance values are the same, thereby the current values flowing through the copper bar are basically consistent, the current sizes of all power modules are basically consistent, the service lives are basically consistent, and the maintenance cost of equipment is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a current sharing copper bar according to an embodiment of the present utility model;
Fig. 2 is a schematic diagram of a current sharing copper bar, a first fuse and a second fuse according to an embodiment of the present utility model.
The drawing marks comprise 1, a connecting part, 11, a first connecting block, 111, a first through hole, 12, a second connecting block, 121, a second through hole, 2, a current equalizing part, 21, a first end, 22, a second end, 23, a first side edge, 24, a second side edge, 3, a first concave part, 4, a second concave part, 5, a first fuse wire, 6 and a second fuse wire.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a current sharing copper bar comprises a connecting part 1 and a current sharing part 2 connected with the connecting part 1, wherein the connecting part 1 is provided with a first connecting block 11 used for being connected with a first fuse wire 5 and a second connecting block 12 used for being connected with a second fuse wire 6, the current sharing part 2 is provided with a first end 21 connected with the connecting part 1 and a second end 22 used for being connected with an external cable, one side of the current sharing part 2 is provided with a first concave part 3, the other side of the current sharing part 2 is provided with a second concave part 4, and the conducting path size from the first connecting block 11 to the second end 22 is the same as the conducting path size from the second connecting block 12 to the second end 22. The first fuse 5 and the second fuse 6 are arranged in parallel, the current of the first fuse 5 flows from the first connecting block 11 to the first end 21 of the current equalizing part 2, flows from the first concave part 3 to the second end 22, flows from the second connecting block 12 to the first end 21 of the current equalizing part 2, flows from the first concave part 3 to the second end 22, and causes the passing distances of two currents from the first end 21 to the second end 22 of the copper bar to be the same and the resistance values to be the same, so that the current values flowing through the copper bar are basically consistent, the current sizes of all power modules are basically consistent, the service lives of the power modules are basically consistent, and the maintenance cost of equipment is reduced.
In this embodiment, as shown in fig. 1, the first connection block 11 is provided with a first through hole 111 for connecting with the first fuse 5, the second connection block 12 is provided with a second through hole 121 for connecting with the second fuse 6, and the conductive path size from the first through hole 111 to the second end 22 is the same as the conductive path size from the second through hole 121 to the second end 22.
In this embodiment, as shown in fig. 1, the first connection block 11 and the second connection block 12 are symmetrically disposed along the length of the first end 21.
In this embodiment, as shown in fig. 1, the current equalizing portion 2 has a first side 23 and a second side 24, the first through hole 111 is close to the first side 23, and the second through hole 121 is close to the second side 24. Current flows along the first side 23 and the second side 24 to the second end 22, respectively.
In this embodiment, as shown in fig. 1, one end of the first side 23 is connected to the first end 21, the other end of the first side 23 is bent towards the direction of the second side 24 to form the first concave portion 3 and then connected to the second end 22, one end of the second side 24 is connected to the first end 21, and the other end of the second side 24 is bent towards the direction of the first side 23 to form the second concave portion 4 and then connected to the second end 22. The first recess 3 is disposed opposite to the recess direction of the second recess 4 such that the conductive path size from the first connection block 11 to the second end 22 is the same as the conductive path size from the second connection block 12 to the second end 22.
In this embodiment, as shown in fig. 1, the connection portion 1 is vertically connected to the current equalizing portion 2. The connection part 1 is in arc connection with the connection part of the flow equalizing part 2. The corners around the connecting part 1 and the corners around the flow equalizing part 2 are rounded corners. The arc connection and the rounded corner are both arranged to avoid the generation of a tip discharge.
The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover all equivalent structures as modifications within the scope of the utility model, either directly or indirectly, as may be contemplated by the present utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420566091.4U CN222191367U (en) | 2024-03-22 | 2024-03-22 | Current equalizing copper bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420566091.4U CN222191367U (en) | 2024-03-22 | 2024-03-22 | Current equalizing copper bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222191367U true CN222191367U (en) | 2024-12-17 |
Family
ID=93824997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420566091.4U Active CN222191367U (en) | 2024-03-22 | 2024-03-22 | Current equalizing copper bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222191367U (en) |
-
2024
- 2024-03-22 CN CN202420566091.4U patent/CN222191367U/en active Active
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