CN202013812U - Novel explosion-proof capacitor with safe film and fuse - Google Patents
Novel explosion-proof capacitor with safe film and fuse Download PDFInfo
- Publication number
- CN202013812U CN202013812U CN2011200968809U CN201120096880U CN202013812U CN 202013812 U CN202013812 U CN 202013812U CN 2011200968809 U CN2011200968809 U CN 2011200968809U CN 201120096880 U CN201120096880 U CN 201120096880U CN 202013812 U CN202013812 U CN 202013812U
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- capacitor
- explosion
- proof
- metallized
- fuse
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Abstract
The utility model provides a novel explosion-proof capacitor with safe film and fuse, and relates to a capacitor. The novel explosion-proof capacitor includes a housing and a core which is arranged inside the housing. The novel explosion-proof capacitor is characterized in that the core is manufactured by winding a gradual change square resistance metallized film and a safe explosion-proof metallized film, and the safe explosion-proof metallized film has a built-in netted metallized fuse. Compared with the prior art, the utility model adopts the safe explosion-proof metallized film with the built-in netted metallized fuse as the explosion-proof structure. When a self-healing breakdown is happened at a local region of a metallized pole plate, the metallized fuse at the local region is fused and is broke off from the surrounding metallized pole plate. The capacitance variation is extremely small, and the capacitor can continue to work as usual after self-healing, so the reliability of the capacitor is improved. Since the capacitor can not become ineffective gradually as a result of a profound capacity loss, and can not have a housing explosion as a result of over-heating, the service lifetime of the capacitor is substantially increased.
Description
Technical field
The utility model relates to capacitor, is specifically related to a kind of new type of safe film fuse noinductive capacitor.
Background technology
The explosion-proof performance of capacitor is the problem that each enterprise payes attention to most always, the purpose that adopts explosion-proof mechanism is that to form open-circuit condition in time explosion-proof for explosion-proof mechanism when product goes wrong can move, the assurance product is opened from circuit interruption, thereby guarantees fail safe and the reliability that integral product is used.The blast resistance construction of existing capacitor all is to adopt the mode that adds blast resistance construction to reach explosion-proof purpose, and it is comparatively complicated in structure, has increased the weight of the weight and volume of capacitor, and cost has also just improved.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of cost low, the new type of safe film fuse noinductive capacitor that volume is little.
Technical problem to be solved in the utility model realizes by the following technical solutions,
New type of safe film fuse noinductive capacitor, comprise shell and be located at the interior core bag of shell, it is characterized in that: described core bag is made by gradual changing square resistance metalized film and safety anti-explosive metallizing film winding, described safety anti-explosive metalized film built-in net-like metallic fusible link.
The beneficial effects of the utility model are: compared with prior art the utility model adopts safety anti-explosive metalized film built-in net-like metallic fusible link as blast resistance construction, in subrange on the metallization pole plate self-healing taking place punctures, the metallization fusible link fusing of this subrange, disconnect with the metallization pole plate around it, electric capacitance change is minimum, capacitor is worked as usual after finishing self-healing, improved the reliability of capacitor, be unlikely to lose efficacy too greatly gradually because of capacitance loss, more can not cause rupture of case, improve life of capacitors greatly because of causing heating.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model core pack arrangement schematic diagram;
Fig. 3 is the utility model safety anti-explosive metallized film structure schematic diagram;
Fig. 4 is the utility model design principle figure.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1 to Figure 3, new type of safe film fuse noinductive capacitor, comprise shell 5 and be located at core bag 4 in the shell 5, core bag 4 is reeled with safety anti-explosive metalized film 1 by gradual changing square resistance metalized film 3 and is made safety anti-explosive metalized film 1 built-in net-like metallic fusible link 2; Self-healing takes place in the subrange on the metallization pole plate puncture, metallization fusible link 2 fusing of this subrange disconnect with metallization pole plate around it, and electric capacitance change is minimum, finish capacitor work as usual after the self-healing.
As shown in Figure 4, the utility model is to staying the limit A trend that tapers off from thickened area C edge according to capacitor work activities district electric current distribution, the self-healing rule of bond film, can successively decrease and increase progressively with current density at behaviour area B1 gradual changing square resistance metalized film, just metal layer thickness successively decreases with current density and successively decreases, so, the zone side resistance little in current density is big, also can be because of the little self-healing difficulty of ampacity; Otherwise, little in zone side's resistance that current density is big, can not generate heat greatly because of current-carrying yet, be directly proportional with media area according to condenser capacity, be inversely proportional to dielectric thickness, the capacitor of producing same capability and withstand voltage can suitably reduce, and dielectric thickness comes reduced volume, weight, reaches the purpose that reduces cost.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. new type of safe film fuse noinductive capacitor, comprise shell and be located at the interior core bag of shell, it is characterized in that: described core bag is made by gradual changing square resistance metalized film and safety anti-explosive metallizing film winding, described safety anti-explosive metalized film built-in net-like metallic fusible link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200968809U CN202013812U (en) | 2011-04-06 | 2011-04-06 | Novel explosion-proof capacitor with safe film and fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200968809U CN202013812U (en) | 2011-04-06 | 2011-04-06 | Novel explosion-proof capacitor with safe film and fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202013812U true CN202013812U (en) | 2011-10-19 |
Family
ID=44784427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200968809U Expired - Fee Related CN202013812U (en) | 2011-04-06 | 2011-04-06 | Novel explosion-proof capacitor with safe film and fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202013812U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680946A (en) * | 2013-12-24 | 2014-03-26 | 安徽赛福电子有限公司 | High-sheet-resistance safe metallized film |
| CN106876139A (en) * | 2017-04-13 | 2017-06-20 | 哈尔滨理工大学 | A kind of novel metal membrane capacitance |
| CN111370229A (en) * | 2020-03-17 | 2020-07-03 | 宁波市江北九方和荣电气有限公司 | Improved structure of metallized safety film explosion-proof capacitor |
-
2011
- 2011-04-06 CN CN2011200968809U patent/CN202013812U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680946A (en) * | 2013-12-24 | 2014-03-26 | 安徽赛福电子有限公司 | High-sheet-resistance safe metallized film |
| CN106876139A (en) * | 2017-04-13 | 2017-06-20 | 哈尔滨理工大学 | A kind of novel metal membrane capacitance |
| CN111370229A (en) * | 2020-03-17 | 2020-07-03 | 宁波市江北九方和荣电气有限公司 | Improved structure of metallized safety film explosion-proof capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Anhui Safe Electronics Co., Ltd. Assignor: Tongling Wenfeng Electronics Co., Ltd. Contract record no.: 2012340000033 Denomination of utility model: Novel explosion-proof capacitor with safe film and fuse Granted publication date: 20111019 License type: Exclusive License Record date: 20120322 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111019 Termination date: 20130406 |