CN204516586U - A kind of low inductance and band safeguard structure DC filter capacitors - Google Patents
A kind of low inductance and band safeguard structure DC filter capacitors Download PDFInfo
- Publication number
- CN204516586U CN204516586U CN201520201267.7U CN201520201267U CN204516586U CN 204516586 U CN204516586 U CN 204516586U CN 201520201267 U CN201520201267 U CN 201520201267U CN 204516586 U CN204516586 U CN 204516586U
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- flattening
- formula
- flattening formula
- filter capacitors
- low inductance
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Abstract
The utility model discloses a kind of low inductance and the DC filter capacitors of band safeguard structure, comprise the flattening formula component element be made up of multiple flattening formula element arranged in parallel, the outer wall of described flattening formula element is provided with gilding layer, the flattening formula element at the upper and lower two ends of described flattening formula component element is provided with pressing plate, two described block pressur plates are fixed by strap and the formula of flattening element, two ends, described flattening formula component element left and right are provided with tin-coated copper brace, described each flattening formula element is equipped with protection copper sheet that is parallel and setting of staggering, one end of described protection copper sheet is welded with flattening formula element, the other end welds with tin-coated copper brace.Its advantage is: can avoid the fault brought because of capacitor heating, and effectively reduce the self-induction of capacitor generation.
Description
Technical field
The utility model relates to a kind of capacitor, is specifically a kind of low inductance and the DC filter capacitors of band safeguard structure.
Background technology
DC filter capacitors, is mainly used in the support link after rectification, and it runs in circuit, requires that capacitor has very low inductance, in its running, often along with big current, causes fuse to generate heat.
Use more DC filter capacitors in the market, when processing capacitor internal fuse, many employings during the connection with the formula of flattening fuse of two electrodes: zinc-plated brace is laid in and flattens on element, zinc-plated brace is directly welded on the Hard link method on flattening element.This connected mode generally can cause the inductance of capacitor excessive, under insulated gate bipolar transistor (IGBT) is often operated in high frequency state, the current changing rate (di/dt) itself flowing through coil is very large, reduces the difficulty that current changing rate often faces practical operation.By contrast, by reducing loop stray inductance value, to carry out over-voltage suppression be the method generally applied in engineering practice, and electric capacity own inductance is excessive, and that high frequency also can be caused to move back lotus root is bad, and the transient response of power supply is deteriorated.Because the production technology of flattening formula fuse makes it in real work, the element heating that can cause because electric current is large unavoidably expands, and this will cause the stressed solder joint of shaking off of element, and the solder joint causing brace to be connected with element comes off, thus makes capacitor failure.
Summary of the invention
In view of the defect of above-mentioned prior art, the purpose of this utility model is: provide a kind of low inductance and the DC filter capacitors of band safeguard structure, can avoid the fault brought because of capacitor heating, and effectively reduce the self-induction of capacitor generation.
Technical solution of the present utility model is: a kind of low inductance and band safeguard structure DC filter capacitors, comprise the flattening formula component element be made up of multiple flattening formula element arranged in parallel, the outer wall of described flattening formula element is provided with gilding layer, the flattening formula element at the upper and lower two ends of described flattening formula component element is provided with pressing plate, two described block pressur plates are fixed by strap and the formula of flattening element, two ends, described flattening formula component element left and right are provided with tin-coated copper brace, described each flattening formula element is equipped with two parallel and stagger arrange protection copper sheet, one end of described protection copper sheet is welded with flattening formula element, the other end welds with tin-coated copper brace.
Further, described strap is plastic-steel baling belt.
Further, described pressing plate is epoxy pressing plate.
Further, the length of described pressing plate is greater than the length of flattening formula element.
Apply a kind of low inductance provided by the utility model and the DC filter capacitors of band safeguard structure, its beneficial effect is: because the protection copper sheet of drawing from two tin-coated copper braces is discontiguous, so during galvanization, the sense of current connecting the protection copper sheet of two the tin-coated copper braces in left and right is contrary, this cancels each other with regard to making the magnetic field produced because of electric current, effectively reduces the self-induction that capacitor produces; And, one end of protection copper sheet is welded with flattening formula element, and the other end welds with tin-coated copper brace, when element expands and is subjected to displacement, the solder joint of protection copper sheet can followed by element and move, thus does not have the situation appearance causing solder joint to come off because element heating expansion is mobile.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Shown in figure: 1-flattens formula component element, 1.1-flattens formula element, 2-gilding layer, 3-pressing plate, 4-strap, 5-tin-coated copper brace, 6-protection copper sheet.
Embodiment
For more intuitively, intactly understanding the technical solution of the utility model, existing just to carry out nonrestrictive feature description in conjunction with the utility model accompanying drawing as follows:
As shown in Figure 1, a kind of low inductance and band safeguard structure DC filter capacitors, comprise the flattening formula component element 1 be made up of multiple flattening formula element 1.1 arranged in parallel, the outer wall of flattening formula element 1.1 is provided with gilding layer 2, the flattening formula element 1.1 at flattening formula component element about 1 two ends is provided with pressing plate 3, two block pressur plates 3 are fixed by strap 4 and the formula of flattening element 1.1, flattening formula component element about 1 two ends are provided with tin-coated copper brace 5, the tin-coated copper brace 5 i.e. copper brace of electroplating surfaces with tin, each flattening formula element 1.1 is equipped with two parallel and stagger arrange protection copper sheet 6, one end of protection copper sheet 6 is welded with flattening formula element 1.1, the other end welds with tin-coated copper brace 5.
Strap 4 is plastic-steel baling belt, plastic-steel baling belt be with PET be primary raw material through extruding the shaping a kind of polyester packing belt of simple tension, pulling force is strong, the stretching resistance as existing steel band, and having again can shock proof ductility, more can guarantee the transportation safety of product; Elongation is little, can keep tightening force for a long time; Temperature tolerance is strong, and fusing point is 260 degree, and less than 120 degree uses are indeformable; Fail safe is good, gets rusty pollution by the trouble of bundle object without steel band.
Pressing plate 3 is epoxy pressing plate, and under high temperature, mechanical strength is high, electric property good stability under high humidity.
The length of pressing plate 3 is greater than the length of flattening formula element 1.1, facilitates the fixing of pressing plate 3.
During assembling, first flattening formula element 1.1 is fitly formed a line, pressing plate 3 placed by the flattening formula element 1.1 at upper and lower two ends, with strap 4, pressing plate 3 and the formula of flattening element 1.1 are fixed, after having fixed, flattening formula element 1.1 sprays gilding layer 2, then tin-coated copper brace 5 is placed in flattening formula component element about 1 two ends, on the flattening formula that the is placed on element 1.1 protection copper sheet 6 being staggered uniformly parallel, each flattening formula element 1.1 arranges two protection copper sheets 6, finally protection copper sheet 6 one end is welded on tin-coated copper brace 5, one end is welded on flattening formula element 1.1, spot size is even, do not contact mutually between protection copper sheet 6.
A kind of low inductance provided by the utility model and band safeguard structure DC filter capacitors, because the protection copper sheet 6 of drawing from two tin-coated copper braces 5 is discontiguous, so during galvanization, the sense of current connecting the protection copper sheet 6 of two the tin-coated copper braces 5 in left and right is contrary, this cancels each other with regard to making the magnetic field produced because of electric current, effectively reduces the self-induction that capacitor produces; And, one end of protection copper sheet 6 is welded with flattening formula element 1.1, the other end welds with tin-coated copper brace 5, when element expands and is subjected to displacement, the solder joint of protection copper sheet 6 can followed by element and move, thus does not have the situation appearance causing solder joint to come off because element heating expansion is mobile.
Certainly; these are only preferred embodiment of the present utility model; non-ly therefore namely limit to the scope of the claims of the present utility model, all utilization the utility model specifications and graphic content institute be simple and easy modification and equivalent structure change for it, all should in like manner be contained within scope of patent protection of the present utility model.
Claims (4)
1. a low inductance and band safeguard structure DC filter capacitors, comprise the flattening formula component element be made up of multiple flattening formula element arranged in parallel, the outer wall of described flattening formula element is provided with gilding layer, it is characterized in that: the flattening formula element at the upper and lower two ends of described flattening formula component element is provided with pressing plate, two described block pressur plates are fixed by strap and the formula of flattening element, two ends, described flattening formula component element left and right are provided with tin-coated copper brace, described each flattening formula element is equipped with protection copper sheet that is parallel and setting of staggering, one end of described protection copper sheet is welded with flattening formula element, the other end welds with tin-coated copper brace.
2. a kind of low inductance according to claim 1 and band safeguard structure DC filter capacitors, it is characterized in that: described strap is plastic-steel baling belt.
3. a kind of low inductance according to claim 1 and band safeguard structure DC filter capacitors, it is characterized in that: described pressing plate is epoxy pressing plate.
4. a kind of low inductance according to claim 1 and band safeguard structure DC filter capacitors, it is characterized in that: the length of described pressing plate is greater than the length of flattening formula element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520201267.7U CN204516586U (en) | 2015-04-02 | 2015-04-02 | A kind of low inductance and band safeguard structure DC filter capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520201267.7U CN204516586U (en) | 2015-04-02 | 2015-04-02 | A kind of low inductance and band safeguard structure DC filter capacitors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204516586U true CN204516586U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520201267.7U Expired - Fee Related CN204516586U (en) | 2015-04-02 | 2015-04-02 | A kind of low inductance and band safeguard structure DC filter capacitors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204516586U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449097A (en) * | 2016-10-15 | 2017-02-22 | 陈伟 | Making process for direct current filter capacitor core |
| CN106601476A (en) * | 2017-01-26 | 2017-04-26 | 上海励容电子有限公司 | DC filtering capacitor for new energy automobile |
-
2015
- 2015-04-02 CN CN201520201267.7U patent/CN204516586U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449097A (en) * | 2016-10-15 | 2017-02-22 | 陈伟 | Making process for direct current filter capacitor core |
| CN106601476A (en) * | 2017-01-26 | 2017-04-26 | 上海励容电子有限公司 | DC filtering capacitor for new energy automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Ningbo Bao Cheng Electric Applicance Co., Ltd Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Ningbo Bao Cheng Electric Applicance Co., Ltd Document name: Notification of Termination of Patent Right |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20170402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |