CN206819881U - A kind of release structure for pressure and the electrolytic capacitor including the structure - Google Patents
A kind of release structure for pressure and the electrolytic capacitor including the structure Download PDFInfo
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- CN206819881U CN206819881U CN201720461639.9U CN201720461639U CN206819881U CN 206819881 U CN206819881 U CN 206819881U CN 201720461639 U CN201720461639 U CN 201720461639U CN 206819881 U CN206819881 U CN 206819881U
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- Prior art keywords
- pressure
- electrolytic capacitor
- bleeding
- cover plate
- cavity
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Abstract
The utility model discloses a kind release structure for pressure, including bleeds off pressure cavity, and the longitudinal section length of side of the gas access for bleeding off pressure cavity is less than the longitudinal section length of side of gas vent；Bleed off pressure block, be placed in it is described bleed off pressure in cavity, the base area for bleeding off pressure block is more than the gas access area for bleeding off pressure cavity；The weight for bleeding off pressure block is equal with the critical pressure value of electrolytic capacitor.The invention also discloses the electrolytic capacitor that structure is bled off pressure including this, can either have good sealing, and can quick release pressure when electrolytic capacitor internal pressure reaches critical value.
Description
Technical field
It the utility model is related to a kind of technical field of energy storage, and in particular to a kind of release structure for pressure and including the structure
Electrolytic capacitor.
Background technology
Electrolytic capacitor is base components irreplaceable in various electronic products, is widely used in electric automobile, industry
The fields such as energy-conserving product, photovoltaic DC-to-AC converter.It is integrated with the fast development of high speed processing technology to carry out electronic component this year, entirely
Ball market field proposes requirements at the higher level to capacitor packages performance.Long-life, high temperature resistant, high frequency tolerant ripple current are the hairs of electrolytic capacitor
Exhibition trend.
The aluminum hull of electrolytic capacitor is the shell of electrolytic capacitor, has protection fuse, isolation capacitor core and the external world
Effect.The aluminum hull inwall of electrolytic capacitor of the prior art does not have insulating capacity, therefore electrolytic capacitor electric capacity in assembling
Around core bag must between the inwall of aluminum hull remaining larger clearance distance, to prevent from causing electric capacity because installation accuracy is not high
Core is contracted for fixed output quotas, and life is crooked to cause aluminum hull internal expansion.
Electrolytic capacitor on the market is by aluminum hull, sheath body, core bag, cover plate, and positive terminal, negative terminal
Form, cover plate is located at the bottom of aluminum barrel, and the edge of cover plate is clamped after the stage edge bending of aluminum barrel, and sheath body is placed on outside aluminum barrel, core
Bag is in aluminum barrel, and positive terminal, negative terminal are at cover plate.It is well known that the electrolyte of electrolytic capacitor
Leakage can have a strong impact on the service behaviour of electrolytic capacitor, can seriously affect electricity if electrolyte leak case is serious
The service behaviour of electrolysis condenser, make electrolytic capacitor cisco unity malfunction, influence the normal use of electrolytic capacitor；And cover plate
Because the relation of sealing is at a leakage for easily revealing electrolyte between the clamping of edge and aluminum barrel.But if sealing
Property it is very good, internal pressure is uneven or runs into extreme situation, and internal temperature is too high, may result in electrolytic capacitor blast.
Utility model content
In view of this, the utility model, which provides, can either have good sealing, and and can is pressed inside electrolytic capacitor
The structure and electrolytic capacitor of quick release pressure when power reaches critical value.
In order to solve the above-mentioned technical problem, the utility model provides a kind of release structure for pressure, including bleeds off pressure cavity, institute
The longitudinal section length of side for stating the gas access for bleeding off pressure cavity is less than the longitudinal section length of side of gas vent；Block is bled off pressure, is placed in described bleed off pressure
In cavity, the base area for bleeding off pressure block is more than the gas access area for bleeding off pressure cavity；The weight for bleeding off pressure block with
The critical pressure value of electrolytic capacitor is equal.
Preferably, the cavity cross-section that bleeds off pressure is shaped as inverted trapezoidal.
The utility model additionally provides a kind of electrolytic capacitor, including housing, is provided with cover plate above the housing, institute
State in housing and be provided with core bag, the core bag draws chaff by positive pole and negative pole draws chaff and connect respectively with positive terminal and negative pole
Line terminals are communicated, and the both positive and negative polarity binding post is fixed on the cover plate by welding terminal, and the cover plate is provided with and institute
The matching hole that both positive and negative polarity binding post is engaged is stated, in addition to, Special-shaped seal components are arranged at the shell nozzle of electrolytic capacitor,
Electrolytic capacitor side edge thereof is provided with the groove with the Special-shaped seal components form fit, work is provided with the top of the cover plate
Dynamic grab, the groove of the movable grab and the housing are coupled；Also include bleeding off pressure cavity, be arranged inside the cover plate, gas
Body entrance is located at cover plate towards the side of core bag, and gas vent is located to be entered backwards to the side of core bag, the gas for bleeding off pressure cavity
The longitudinal section length of side of mouth is less than the longitudinal section length of side of gas vent；Bleed off pressure block, be placed in it is described bleed off pressure in cavity, the block that bleeds off pressure
Base area is more than the gas access area for bleeding off pressure cavity；The critical pressure of the weight and electrolytic capacitor for bleeding off pressure block
It is worth equal.
Preferably, in addition to deflector, it is arranged in housing, and covers on the core side of wrapping, and is not connect with the core bag
Touch；
Preferably, including foil, housing bottom is arranged at,
Preferably, the foil thickness is 20 microns~40 microns.
Preferably：The Special-shaped seal components include three sections, and first paragraph is from shell rim to casing center to housing bottom
Inclined slope；Second segment is parallel to the housing bottom and the boss prominent to the casing center；3rd section is vertical
In the boss that the housing sidewall is set.
Preferably：The Special-shaped seal components are cyclic structure.
Preferably, the movable grab is hinged by hinge and the cover plate.
The beneficial effects of the utility model are mainly reflected in：
1st, compared with prior art, the structure of profiled seal is added, makes electrolytic capacitor that there is stronger sealing property,
The sealing effectiveness of electrolytic capacitor is improved, reduces the leakage risk of electrolyte.
2nd, movable grab is further comprises on the cover plate to be coupled with the groove, adds the sealing of electrolytic capacitor,
So as to avoid jeopardizing the personal safety of operating personnel.
3rd, used and bled off pressure cavity and bleed off pressure block, usually bled off pressure in cavity, because the weight for bleeding off pressure block is equal to critical pressure,
Under normal operating condition, bleed off pressure block and the gas access for bleeding off pressure cavity is closed, wait and reach or surpass critical pressure
When, bleed off pressure block and jacked up, so as to which internal pressure is released.
4th, in addition, the utility model also uses deflector and foil, deflector can make interior evaporation electrolyte
Flow by the passage formed between deflector and core bag, can be radiated in flow process, and the foil of bottom
So that the evaporation electrolysis liquid release overflowed is gentle, pressure release is gentle, and releasing effect is stable, effectively avoid damaging other elements with
And wiring board.
Brief description of the drawings
Fig. 1 electrolytic capacitor schematic diagrames provided by the utility model including bleeding off pressure structure.
Embodiment
In order that those skilled in the art more fully understands the technical solution of the utility model, with reference to specific implementation
The utility model is described in further detail for mode.
The purpose of this utility model, advantage and feature, figure will be carried out by the non-limitative illustration of preferred embodiment below
Show and explain.These embodiments are only the prominent examples using technical solutions of the utility model, all to take equivalent substitution or wait
Effect conversion and formed technical scheme, all fall within the requires of the utility model protection within the scope of.
As shown in figure 1, a kind of electrolytic capacitor, including housing 1, the top of the housing 1 are provided with cover plate 2.In this reality
Apply in example, the material of the cover plate 2 can be divided into two parts, and top is phenolic materials, and periphery is rubber layer, from the original of rubber layer
Because being because quality of rubber materials is soft, there is preferable sealing effectiveness, and can fix well.The cover plate can also other materials,
Coordinate as long as can realize with the sealing of the housing.
In embodiment, in addition to cavity 8 is bled off pressure, be arranged inside the cover plate, gas access is located at cover plate towards core
The side of bag, gas vent is located at is less than gas backwards to the side of core bag, the longitudinal section length of side of the gas access for bleeding off pressure cavity
The longitudinal section length of side of body outlet；Preferably, the cavity cross-section that bleeds off pressure is shaped as inverted trapezoidal.
Bleed off pressure block 9, be placed in it is described bleed off pressure in cavity 8, the base area for bleeding off pressure block 9 is more than the gas for bleeding off pressure cavity
Body inlet area；The weight for bleeding off pressure block is equal with the critical pressure value of electrolytic capacitor.
Increase air pressure in housing to further alleviate the internal evaporation electrolysis liquid formed due to high temperature, it is preferred that also
Including deflector 10, it is arranged in housing 1, and covers on the top of core bag 3, and is not contacted with the core bag 3；Preferably, wrap
Foil 11 is included, is arranged at the bottom of housing 1, it is preferred that the foil thickness is 20 microns~40 microns.The metal
Thin slice is preferably aluminum slice.Deflector can make interior evaporation electrolyte pass through the passage stream formed between deflector and core bag
It is dynamic, it can be radiated in flow process, and the foil of bottom causes the evaporation electrolysis liquid release overflowed gently, pressure
Release is gentle, and releasing effect is stable, effectively avoids damaging other elements and wiring board.
Be provided with core bag in the housing 1, the core bag by positive pole draws chaff and negative pole draw chaff respectively with positive terminal
Terminal and negative terminal are communicated, and the both positive and negative polarity binding post can be fixed on by welding terminal on the cover plate 2, described
Cover plate 2 is provided with the matching hole being engaged with the both positive and negative polarity binding post, and the matching hole is used to make the positive terminal
Son 5, the negative terminal 6 draw chaff by positive pole described in the Kong Bingyu, the negative pole draws chaff connection.
The opening of the housing 1 is provided with a Special-shaped seal components 4, and in the present embodiment, the Special-shaped seal components 4 are specifically set
Put at the upper end open structure of the housing 1, the top of the cover plate 2 and the Special-shaped seal components 4 of the opening of housing 1 have
There is the groove that shape matches, in mating process, the achievable cover plate 2 is fixedly connected with the housing 1, and then is ensured
The steadiness of the electrolytic capacitor.The Special-shaped seal components 4 include three sections, first paragraph be from shell rim to casing center to
The inclined slope of housing bottom；Second segment is parallel to the housing bottom and the boss prominent to the casing center；3rd
Section is the boss set perpendicular to the housing sidewall.Compared with prior art, the setting of the different in nature seal 4 ties sealing
The sealing of structure and cover plate has stronger sealing property, and the electrolytic capacitor needs not worry about electrolyte and let out in use
Dew and the electrolytic capacitor are easy to fall off.In the technical program, the Special-shaped seal components 4 can be cyclic structure, the ring-type
The setting of structure may be such that the sealing effectiveness of the electrolytic capacitor is more preferable, and also have job stability at high operating temperatures
It is good, the leakage risk of the electrolytic capacitor is greatly reduced, can industrially be widely used.
As shown in figure 1, a groove 5 is offered on the outer surface of shown housing.The groove is multiple, and the groove can
For arbitrary shape, for example deep-slotted chip breaker or cross section are groove of triangle etc..The first end of each groove is connected to same point,
The depth of the groove is preferably 1 ~ 5mm.The first end of each groove is respectively positioned at the center of the side wall of housing 1.It is adjacent
Angle angle between two grooves is identical, and the setting of the angle causes each groove to be evenly distributed.The technical program it is another
One embodiment：Also include a movable grab being hinged by hinge 6 and the cover plate at the top of cover plate, the movable grab and
Clamping fixed is coupled in groove.Increase the sealing of electrolytic capacitor.
Traditional electrolytic capacitor and housing are all cylindrical types, are experimentally confirmed, with 400V/1100uF, 85 degree,
Exemplified by the product of 5000h specifications, in load condition, environment temperature is that the core bag center temperature rise of cylinder product under 85 degree is 1.5
Degree, resistance to ripple current ability is 18A, and in the technical program, the center temperature rise of oval product core bag is 1 degree, resistance to ripple current
Ability is 21A.
Electrolytic capacitor structure of the present utility model is simple, reasonable in design, and sealing effectiveness is obvious.The utility model not only has
The characteristics of lossy low, electric leakage is small, good airproof performance and service life are long, but also with job stability at high operating temperatures
Good, the electrolyte in electrolytic capacitor will not be revealed.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit and essential characteristics of the present utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model, any reference in claim should not be considered as into limitation
Involved claim.
It the above is only preferred embodiment of the present utility model, it is noted that above-mentioned preferred embodiment should not regard
For that should be defined to limitation of the present utility model, the scope of protection of the utility model by claim limited range.For
For those skilled in the art, do not departing from spirit and scope of the present utility model, can also make some
Improvements and modifications, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (8)
1. a kind of release structure for pressure, it is characterised in that including bleeding off pressure cavity, the longitudinal section of the gas access for bleeding off pressure cavity
The length of side is less than the longitudinal section length of side of gas vent；
Bleed off pressure block, be placed in it is described bleed off pressure in cavity, the base area for bleeding off pressure block is more than the gas access for bleeding off pressure cavity
Area；The weight for bleeding off pressure block is equal with the critical pressure value of electrolytic capacitor.
2. release structure for pressure according to claim 1, it is characterised in that the cavity cross-section that bleeds off pressure is shaped as down ladder
Shape.
3. a kind of electrolytic capacitor, including housing, cover plate is installed above the housing, core bag, institute are provided with the housing
State that core bag draws chaff by positive pole and negative pole draws chaff and communicated respectively with positive terminal and negative terminal, it is described positive and negative
Pole binding post is fixed on the cover plate by welding terminal, and the cover plate is provided with to match with the both positive and negative polarity binding post
The matching hole of conjunction, it is characterised in that also including Special-shaped seal components, be arranged at the shell nozzle of electrolytic capacitor, in electrolysis electricity
Container cover plate edge is provided with the groove with the Special-shaped seal components form fit, and movable grab is provided with the top of the cover plate,
The groove of the movable grab and the housing is coupled；Also include bleeding off pressure cavity, be arranged inside the cover plate, gas access position
In cover plate towards the side of core bag, gas vent is located to be cut backwards to the side of core bag, the vertical of the gas access for bleeding off pressure cavity
The face length of side is less than the longitudinal section length of side of gas vent；Bleed off pressure block, be placed in it is described bleed off pressure in cavity, the base area for bleeding off pressure block
It is equal with the critical pressure value of electrolytic capacitor more than the gas access area for bleeding off pressure cavity, the weight for bleeding off pressure block；
The Special-shaped seal components include three sections, and first paragraph is from shell rim to casing center to the inclined slope of housing bottom；Second
Section is parallel to the housing bottom and the boss prominent to the casing center；3rd section is to be set perpendicular to the housing sidewall
The boss put.
4. electrolytic capacitor according to claim 3, it is characterised in that also including deflector, be arranged in housing, and cover
In the core side of wrapping, and do not contacted with the core bag.
5. electrolytic capacitor according to claim 4, it is characterised in that also including foil, be arranged at housing bottom.
6. electrolytic capacitor according to claim 5, it is characterised in that the foil thickness is 20 microns~40 micro-
Rice.
7. electrolytic capacitor according to claim 6, it is characterised in that：The Special-shaped seal components are cyclic structure.
8. electrolytic capacitor according to claim 7, it is characterised in that the movable grab passes through hinge and the cover plate
It is be hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720461639.9U CN206819881U (en) | 2017-04-28 | 2017-04-28 | A kind of release structure for pressure and the electrolytic capacitor including the structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720461639.9U CN206819881U (en) | 2017-04-28 | 2017-04-28 | A kind of release structure for pressure and the electrolytic capacitor including the structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206819881U true CN206819881U (en) | 2017-12-29 |
Family
ID=60753889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720461639.9U Expired - Fee Related CN206819881U (en) | 2017-04-28 | 2017-04-28 | A kind of release structure for pressure and the electrolytic capacitor including the structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206819881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111128554A (en) * | 2020-01-16 | 2020-05-08 | 丰宾电子（深圳）有限公司 | Anti-splashing cover cap and anti-splashing capacitor |
-
2017
- 2017-04-28 CN CN201720461639.9U patent/CN206819881U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111128554A (en) * | 2020-01-16 | 2020-05-08 | 丰宾电子（深圳）有限公司 | Anti-splashing cover cap and anti-splashing capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |