CN204270884U - The power capacitor of perfect heat-dissipating - Google Patents
The power capacitor of perfect heat-dissipating Download PDFInfo
- Publication number
- CN204270884U CN204270884U CN201420706233.9U CN201420706233U CN204270884U CN 204270884 U CN204270884 U CN 204270884U CN 201420706233 U CN201420706233 U CN 201420706233U CN 204270884 U CN204270884 U CN 204270884U
- Authority
- CN
- China
- Prior art keywords
- copper strips
- capacitor core
- capacitor
- core group
- metal spraying
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a kind of power capacitor of perfect heat-dissipating, comprise cover plate assembly, shell and capacitor core group, capacitor core group is formed by stacking by several cylindrical capacitive fuses, drawing copper strips is arranged on capacitor core group metal spraying face, draw the central area, metal spraying face that overlay area, copper strips both sides at least extends to the capacitor core being positioned at capacitor core group both sides, draw copper strips to have through hole in the centre, metal spraying face of each capacitor core or be opened on the groove of drawing copper strips side, extraction copper strips has and extends to being used for metal spraying face by welding the elastic fin be electrically connected in described through hole or groove.Drawing the width of copper strips by expanding, making electric current can either uniformly across reducing caloric value again.And draw copper strips area to be also multiplied, heat dispersion significantly strengthens.
Description
Technical field
The utility model relates to power capacitor, specifically a kind of power capacitor of perfect heat-dissipating.
Background technology
Due to the loss of himself when capacitor normally runs, electric current can produce heat through connectors such as capacitor core, copper strips and solder joints.If these heats can not distribute effectively and timely, greatly can reduce the useful life of capacitor, even can have influence on the normal use of capacitor.
In addition, if its overcurrent capability of extraction copper strips of capacitor internal is little, electric current distributes inequality and local current can be made excessive, single capacitor core overcurrent capability is limited, if run when exceeding rated current for a long time, capacitor can be caused to damage, thus cause capacitor normally to use.
For the high-power electric capacitor adopting cylindrical capacitive fuse, due to capacitor core stacked on top, the height of each fuse in core group is inconsistent, the electric current of each fuse mutually superposes on top when by drawing copper strips, make to draw the CURRENT DISTRIBUTION that copper strips passes through uneven, namely draw that copper strips lower current density is little and top current density is large, thus cause local current excessive, caloric value increases, cause locally dispelling the heat not Chang, thus bring heat dissipation problem, long-play also can cause capacitor to damage, thus cause capacitor normally to use.
Summary of the invention
The purpose of this utility model is to provide a kind of power capacitor of perfect heat-dissipating, and not only electric current can uniformly across extraction copper strips, and perfect heat-dissipating, can effectively extend its useful life.
The utility model is achieved in that and comprises cover plate assembly, shell and fixing capacitor core group in the enclosure, capacitor core group is formed by stacking by several cylindrical capacitive fuses, metal spraying face, capacitor core group both sides is electrically connected with respectively the extraction copper strips as positive and negative electrode, each extraction copper strips end has the terminal connection part being used for being electrically connected with the leading-out terminal on cover plate assembly formed through bending; Drawing copper strips is arranged on capacitor core group metal spraying face, draw the central area, metal spraying face that overlay area, copper strips both sides at least extends to the capacitor core being positioned at capacitor core group both sides, extraction copper strips have through hole in the centre, metal spraying face of each capacitor core or is opened on the groove of drawing copper strips side, extraction copper strips having and extends to being used for metal spraying face by welding the elastic fin be electrically connected in described through hole or groove; The width of terminal connection part is consistent with extraction copper strips width.Due to draw copper strips width comparatively conventional capacitor increase significantly, make to draw copper strips overflow section to increase exponentially, even if electric current is through drawing copper strips upper end, electric current still can be uniformly across, and current density reduces, its caloric value obviously reduces, and draws copper strips area simultaneously and is also multiplied, its area of dissipation is similarly multiplied, and heat dispersion significantly strengthens.Draw copper strips to be electrically connected by the capacitor core of elastic fin with core group, solder joint is firm, can overcome the solder joint obscission that capacitor causes by core group borrow when external force vibrations or impact.
Further, draw overlay area, copper strips both sides and extend to capacitor core group both sides of the edge.Do not increasing in capacitor volume situation, this structure can make to draw copper strips width and reach maximum, area of dissipation reaches and reaches most, best radiating effect can be obtained, and can make the uniform current on each capacitor core pass through copper strips, make homogeneous current distribution in capacitor, there will not be local overheating phenomenon.
Further, described elastic fin extends in through hole or groove by near the side of drawing copper strips centre.This design has elasticity due to fin, can effectively prevent solder joint from coming off under jerk environment.
As shown from the above technical solution, the utility model draws the width of copper strips by expanding, and draws copper strips overflow section to increase, and makes electric current can either be uniformly across, can reduce again the caloric value of drawing copper strips self simultaneously.And be also multiplied owing to drawing copper strips area, its area of dissipation is similarly multiplied, and heat dispersion significantly strengthens.Draw copper strips to be electrically connected by the capacitor core of elastic fin with core group, solder joint is firm, can overcome the solder joint obscission that capacitor causes by core group borrow when external force vibrations or impact.Draw on copper strips and open hole or groove in the position that each capacitor core is corresponding, and corresponding elastic fin is set, capacitor core is welded on the effect can also playing fixing fuse after on fin, and make whole capacitor core group form a framework, entirety is more firm.In addition, plug in the middle of capacitor core is arranged in through hole or groove, be poured in polyurethane in capacitor or vegetable oil can be filled in plug fully and draw copper strips with between core group, the creepage distance that can effectively overcome between capacitor both positive and negative polarity that metal spraying ash because being scattered in plug inside and copper strips cause with the air void between core group shortens, normally uses bring potential safety hazard to capacitor.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is capacitor core group perspective view.
In figure, the implication of label symbol is as follows:
1-cover plate assembly 11-leading-out terminal 12-draws wire 2-shell 3-capacitor core group 31-capacitor core 32-plug 4 and 6-draws copper strips 41 and 61-terminal connection part 42-elastic fin 5-solder joint 7-insulating barrier
Embodiment
Below in conjunction with accompanying drawing, the technical scheme in the utility model embodiment is clearly and completely described.Obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model capacitor core group 3 of comprising cover plate assembly 1, shell 2 and being fixed in shell 2.Capacitor core group 3 can be one or several and be set up in parallel, and be placed in shell 2 after surrounding wrap insulate film outside each capacitor core group 3, dielectric film does not draw in FIG.The positive and negative electrode of capacitor core group 3 is electrically connected with the leading-out terminal 11 on cover plate assembly 1 respectively by extraction wire 12.
Capacitor core group 3 structure, see Fig. 2, is formed by stacking by several columniform capacitor cores about 31, in this example capacitor core group 3 by two row totally 12 capacitor cores 31 form.Metal spraying face, capacitor core group 3 both sides is electrically connected with respectively the extraction copper strips 4,6 as positive and negative electrode, drawing copper strips 4,6 is symmetricly set on the metal spraying face, both sides of capacitor core group 3, there is the terminal connection part 43,61 being used for being electrically connected with the leading-out terminal 11 on cover plate assembly 1 formed through bending each extraction copper strips 4,6 upper end, the width of terminal connection part 43,61 is consistent with extraction copper strips 4,6 width, so that uniform current ground arrives terminal connection part 43,61 and effectively expands area of dissipation.Insulating barrier 7 is provided with between the capacitor core 31 on terminal connection part 43,61 and capacitor core group 3 top.
To draw copper strips 4, draw the central area, metal spraying face that overlay area, copper strips 4 both sides at least extends to the capacitor core 31 being positioned at capacitor core group 3 both sides, preferably as shown in Figure 2, draw overlay area, copper strips 4 both sides and extend to capacitor core group 3 both sides of the edge, make extraction copper strips width maximum, thus obtain best radiating effect.Draw copper strips 4 to have through hole 41 in the centre, metal spraying face of each capacitor core 31 or be opened on the groove of drawing copper strips side, the plug 32 that the central area, metal spraying face of each capacitor core 31 is comprised in the middle of capacitor core 31 is out exposed.Extraction copper strips 4 has and extends to being used for metal spraying face by welding the elastic fin 42 be electrically connected in described through hole 41 or groove.Number in the figure 5 is the solder joint that elastic fin 42 is connected with capacitor core metal spraying face.For making current path the shortest, described elastic fin 42 extends in through hole 41 or groove by near the side of drawing copper strips 4 centre.
The utility model capacitor core group 3 adopts immersion oil process.When after capacitor core group 3 and cover plate assembly 1 installation, filling polyurethane or epoxy resin in shell 2, make dry-type capacitor.
It is pointed out that the utility model also can pour into vegetable oil or other insulating heat-conductives oil in the enclosure, make wet type capacitor.
Claims (3)
1. the power capacitor of perfect heat-dissipating, comprise cover plate assembly (1), shell (2) and fixing capacitor core group (3) in the enclosure, capacitor core group (3) is formed by stacking by several cylindrical capacitive fuses (31), metal spraying face, capacitor core group (3) both sides is electrically connected with respectively the extraction copper strips (4,6) as positive and negative electrode, there is the terminal connection part (43,61) being used for being electrically connected with the leading-out terminal (11) on cover plate assembly formed through bending each extraction copper strips (4,6) upper end, it is characterized in that: draw copper strips (4, 6) be arranged on capacitor core group (3) metal spraying face, draw copper strips (4, 6) overlay area, both sides at least extends to the central area, metal spraying face of the capacitor core (31) being positioned at capacitor core group both sides, draw copper strips (4, 6) have through hole (41) in the centre, metal spraying face of each capacitor core (31) or be opened on the groove of drawing copper strips side, draw copper strips (4, 6) have on and extend to being used for metal spraying face by welding the elastic fin (42) be electrically connected in described through hole (41) or groove, the width of terminal connection part (43,61) is consistent with extraction copper strips (4,6) width.
2. the power capacitor of perfect heat-dissipating according to claim 1, is characterized in that: draw copper strips (4,6) overlay area, both sides and extend to capacitor core group (3) both sides of the edge.
3. the power capacitor of perfect heat-dissipating according to claim 1, is characterized in that: described elastic fin (42) extends in through hole (41) or groove by near the side of drawing copper strips centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420706233.9U CN204270884U (en) | 2014-11-21 | 2014-11-21 | The power capacitor of perfect heat-dissipating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420706233.9U CN204270884U (en) | 2014-11-21 | 2014-11-21 | The power capacitor of perfect heat-dissipating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204270884U true CN204270884U (en) | 2015-04-15 |
Family
ID=52805737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420706233.9U Withdrawn - After Issue CN204270884U (en) | 2014-11-21 | 2014-11-21 | The power capacitor of perfect heat-dissipating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204270884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465095A (en) * | 2014-11-21 | 2015-03-25 | 安徽铜峰电子股份有限公司 | Power capacitor high in heat dissipation performance |
-
2014
- 2014-11-21 CN CN201420706233.9U patent/CN204270884U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465095A (en) * | 2014-11-21 | 2015-03-25 | 安徽铜峰电子股份有限公司 | Power capacitor high in heat dissipation performance |
| CN104465095B (en) * | 2014-11-21 | 2017-06-20 | 安徽铜峰电子股份有限公司 | The power capacitor of perfect heat-dissipating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150415 Effective date of abandoning: 20170620 |
|
| AV01 | Patent right actively abandoned |