CN203858983U - Capacitor core lead structure - Google Patents
Capacitor core lead structure Download PDFInfo
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- CN203858983U CN203858983U CN201420252829.6U CN201420252829U CN203858983U CN 203858983 U CN203858983 U CN 203858983U CN 201420252829 U CN201420252829 U CN 201420252829U CN 203858983 U CN203858983 U CN 203858983U
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- aluminium foil
- protruding end
- fuse
- bonding pad
- welding
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Abstract
The utility model discloses a capacitor core lead structure, and the structure comprises an element disposed in an isolation liner, aluminum-foil convex ends exposed out of two ends of the element, a fuse, and a flexible copper stranded wire 6. The structure is characterized in that the structure also comprises a welding sheet 2 made of a thin aluminum sheet or a thin copper sheet. The welding sheet 2 is folded for two times to form a clamping piece which clamps the aluminum-foil convex ends. The fuse is placed between the welding sheet and the aluminum-foil convex ends. The fuse, the welding sheet 2 and the aluminum-foil convex ends are electrically connected through metal ultrasonic welding. The structure has no discharge during welding, and has no impact on a human body and an environment, and is good in product consistency. The welding quality is controlled by equipment, the demands for worker's skills are lower, and the performance and quality of products and the production efficiency are improved.
Description
Technical field
The utility model relates to power capacitor technical field, relates in particular to a kind of power capacitor fuse pin configuration.
Background technology
Power capacitor has two kinds at present: containing interior fuse product, without interior fuse product.The core of these two kinds of products is all to form center by some Series Parallel Elements, and element is by electrode---aluminium foil, insulation energy-accumulating medium---, and capacitor film, kraft capacitor paper roll and form on private volume winding apparatus by designing requirement; Aluminium foil is exposed at element two ends so that welding or mechanical clamping connection.While welding in capacitor packet lead-in wire technique, scolder adopts low temperature tin zinc welding rod and weld tabs, welding equipment to adopt external heated electric iron, dust exhaust apparatus etc.; When machinery crimping, material folding adopts scale copper, equipment to adopt special Press Plier etc.
The shortcoming of capacitor packet lead-in wire process using soldering: when (1) welding, the easy sagging of Welding Sn-Zn material enters interelectrode medium; This solder temperature is enough to destroy dielectric layer, makes it to shrink, melt; Reduce insulation distance and effective energy storage area, reduced the Performance and quality of product.(2) welding be all artificial welding, solder horn when exposing AL-foil and contact under different pressures medium heat affected zone be difficult to control, solder fusing how heat affected zone change greatly, the excessive excess Temperature of pressure can scorch dielectric; The too low rosin joint phenomenon that has of the too small temperature of pressure.(3) center wire bonds is carried out under ultrapurification environment, and in welding process, solder fusing can produce waste gas, be difficult to discharge completely totally, and human body and environment are had to impact.(4) in welding process, soldering tip is easily oxidized, and needs frequent clean, has affected production efficiency.
The shortcoming of capacitor packet lead-in wire process using machinery crimping: the aluminium foil that expose at element two ends is by the crimping of material folding scale copper machinery, capacitor in running, be subject to alternating electric field, discharge and recharge to affect crimping place easily loosening, reduce coupling reliability, it is large that contact resistance becomes, the capability and performance of product is difficult to control, and capacitor safe operation is difficult to ensure.
Above-mentioned shortcoming cause reason:
Capacitor packet lead-in wire process using soldering: (1) this technical process is all manual operation, and craftsmanship's dispersiveness is larger.(2) characteristic of scolder itself, has determined can produce waste gas in welding process.(3) solder horn produces oxidation and is subject to the impact of temperature and environment in technical process.
Capacitor packet lead-in wire process using machinery crimping: be subject to the impact of the mechanical performance feature (capacitor aluminium foil thickness is between 4.5 μ m～6.5 μ m) of aluminium foil itself, stressed position, direction, size are difficult to control in mechanical compression joint technique process between aluminium foil and scale copper, between Press Plier and scale copper.
Utility model content
The purpose of this utility model is to provide and is to propose a kind of capacitor body pin configuration, this structure can neither be carried electric current to workpiece in the time of welding, also do not impose high temperature heat source to workpiece, just under static pressure, changing frequency electromagnetic waves vibrational energy into ultrasonic wave, the frictional work that is workplace by Conversion of Energy by luffing pipe, deformation energy and limited temperature rise. the metallurgical binding between aluminium foil is a kind of solid State Welding.
For realizing above-mentioned utility model object, the utility model has adopted following technical proposal:
A kind of capacitor body pin configuration, comprise and be arranged on the element of barrier liner inside, aluminium foil protruding end, fuse and the copper soft whipping wire that expose at element two ends, it is characterized in that, also comprise the bonding pad of being made by flake aluminum or scale copper, described bonding pad forms holder and is clamped on described aluminium foil protruding end after twice folds, described fuse is positioned between bonding pad and aluminium foil protruding end, and electrical connection is realized by metal ultrasonic bonding in described fuse, bonding pad and aluminium foil protruding end.
Further, described copper soft whipping wire is arranged, is fixed between bonding pad and aluminium foil protruding end according to sine curve along upper end, aluminium foil protruding end, and electrical connection is realized by metal ultrasonic bonding in described copper soft whipping wire, bonding pad and aluminium foil protruding end; Element-external is exposed as the fuse exit being connected with external circuit in described copper soft whipping wire two ends.
Further, the solder joint of fuse and aluminium foil protruding end is positioned at the side of aluminium foil protruding end, and the solder joint of copper soft whipping wire and aluminium foil protruding end is positioned at the end face of aluminium foil protruding end.
Further, the holder that above-mentioned bonding pad forms comprises Yi Ge bottom surface, two sides.
Further, described bonding pad is flake aluminum or scale copper, is shaped as rectangle, and four jiaos, rectangle encloses fillet, and length is 25mm～35mm, and width is 15～25mm, and thickness is 0.05mm～0.2mm.
Above-mentioned capacitor body pin configuration can make by following two kinds of welding procedures:
Technique A:
A kind of capacitor body wire bonds technique, comprises the steps,
Step: fuse and bonding pad are welded and form fuse bonding pad assembly with supersonic welder;
Step 2: the bonding pad in step 1 is formed to holder after twice folds, utilize nipper pliers holder to be enclosed within on the aluminium foil protruding end of element and clamping and positioning, then with supersonic welder, the aluminium foil protruding end firm welding of fuse bonding pad assembly and element is realized and being electrically connected;
Step 3: copper soft whipping wire is connected to weld with ultrasonic bonding with several bonding pads forms copper soft whipping wire bonding pad assembly
Step 4: several bonding pads in step 3 are formed to holder after twice folds, utilize nipper pliers holder to be enclosed within on the aluminium foil protruding end of element and clamping and positioning, then with supersonic welder, the aluminium foil protruding end firm welding of copper soft whipping wire bonding pad assembly and element is realized and being electrically connected.
Technique B:
A kind of capacitor body wire bonds technique, comprises the steps,
Step 1: bonding pad is processed into holder, and is enclosed within on the aluminium foil protruding end of element, fuse is positioned between bonding pad and aluminium foil protruding end, then with nipper pliers by bonding pad, fuse and aluminium foil protruding end clamping and positioning;
Step 2: bonding pad, fuse and aluminium foil protruding end firm welding are realized to electrical connection with supersonic welder;
Step 3: copper soft whipping wire is connected to weld with ultrasonic bonding with several bonding pads forms copper soft whipping wire bonding pad assembly;
Step 4: several bonding pads in step 3 are formed to holder after twice folds, utilize nipper pliers holder to be enclosed within on the aluminium foil protruding end of element and clamping and positioning, then with supersonic welder, the aluminium foil protruding end firm welding of copper soft whipping wire bonding pad assembly and element is realized and being electrically connected.
Described supersonic welder is metal supersonic welder.
Above-mentioned power capacitor fuse lead-in wire ultrasonic welding process is made up of two parts technique: 1, fuse and the welding of element aluminium foil protruding end; 2, soft whipping wire and the welding of element aluminium foil protruding end.Its technique capital equipment used is metal supersonic welder, nipper pliers, and main material is element, bonding pad (flake aluminum or scale copper), fuse, copper soft whipping wire.
Beneficial effect:
Capacitor body pin configuration tool described in the utility model has the following advantages:
(1) welding quality improves, without rosin joint, to medium not damaged.
(2) when welding is without discharge, on human body and environment without impact.
(3) good product consistency, the quality of welding is subject to equipment control, lower to craftsmanship's requirement, has improved properties of product quality and production efficiency.
Brief description of the drawings
Fig. 1 is the flow chart of fuse described in the utility model and aluminium foil protruding end welding procedure A route;
Fig. 2 is the flow chart of fuse described in the utility model and aluminium foil protruding end welding procedure B route;
Fig. 3 is the flow chart of copper soft whipping wire described in the utility model and aluminium foil protruding end welding procedure;
Fig. 4 is the partial structurtes schematic diagram of capacitor body pin configuration described in the utility model;
Fig. 5 is the structural representation of A-A direction in Fig. 4;
Fig. 6 is the structural representation of B-B direction in Fig. 4;
Fig. 7 is the overall structure schematic diagram of capacitor body pin configuration described in the utility model
Wherein, 1, element, 2, bonding pad; 3, fuse; 4, aluminium foil protruding end; 5, barrier liner; 6, copper soft whipping wire.
Embodiment
Below in conjunction with accompanying drawing and a preferred embodiment, the technical solution of the utility model is further described.
Embodiment:
A kind of capacitor body wire bonds technique comprises two key steps, the welding of first fuse 3 and element aluminium foil protruding end 4, and it two is copper soft whipping wires 6 and the welding of element aluminium foil protruding end 4;
1, wherein fuse 3 can carry out according to following two kinds of techniques with the welding procedure of element aluminium foil protruding end 4.
1.1 according to technique A route, as shown in Figure 1:
The welding procedure of fuse 3 and element aluminium foil protruding end 4, comprises
Steps A 01: fuse 3 and bonding pad 2 use supersonic welders are welded and form fuse bonding pad assembly;
Steps A 02: the bonding pad in steps A 01 2 is formed to holder through twice after folding, utilize nipper pliers holder to be enclosed within on the aluminium foil protruding end 4 of element 1 and clamping and positioning;
Steps A 03: with metal supersonic welder, aluminium foil protruding end 4 firm welding of fuse bonding pad assembly and element 1 are realized to the electrical connection of fuse 3 and aluminium foil protruding end 4;
1.2 according to technique B route, as shown in Figure 2:
The welding procedure of fuse 3 and element aluminium foil protruding end 4, comprises
Step B01: bonding pad 2 is processed into holder, and is enclosed within on the aluminium foil protruding end 4 of element 1, fuse 3 is positioned between bonding pad 2 and aluminium foil protruding end 4, then with nipper pliers by bonding pad 2, fuse 3 and aluminium foil protruding end 4 clamping and positioning;
Step B02: with metal supersonic welder, bonding pad 2, fuse 3 and aluminium foil protruding end 4 firm welding are realized to the electrical connection of fuse 3 and aluminium foil protruding end 4;
2, the welding procedure of copper soft whipping wire 6 and element aluminium foil protruding end 4, as shown in Figure 3, comprises
Step C01: welding that copper soft whipping wire 6 is connected with several bonding pad 2 use ultrasonic bonding forms copper soft whipping wire bonding pad assembly;
Step C02: several bonding pads 2 in step C01 are formed to holder through twice after folding, utilize nipper pliers holder to be enclosed within on the aluminium foil protruding end 4 of element 1 and clamping and positioning;
Step C03: with supersonic welder, aluminium foil protruding end (4) firm welding of copper soft whipping wire bonding pad assembly and element 1 is realized to copper soft whipping wire 6 and be electrically connected with element aluminium foil protruding end 4.
Above-mentioned bonding pad 2 is flake aluminum or scale copper, is shaped as rectangle, and four jiaos, rectangle encloses fillet, and length is 30mm, and width is 20mm, and thickness is 0.1mm.
So far capacitor body wire bonds technique described in the utility model completes, and this technique is equally applicable to all electrical connections that are electrically connected in electric power system auxiliary products.
As shown in Figure 4 to 7:
Utilize above-mentioned technique to manufacture the structure of the capacitor body lead-in wire of gained, comprise and be arranged on the element 1 of barrier liner 5 inside, aluminium foil protruding end 4, fuse 3 and the copper soft whipping wire 6 that expose at element 1 two ends, also comprise the bonding pad 2 of being made by flake aluminum or scale copper, described bonding pad 2 forms holder and is clamped on described aluminium foil protruding end 4 after twice folds, described fuse 3 is positioned between bonding pad 2 and aluminium foil protruding end 4, and described fuse 3, bonding pad 2 are realized electrical connection with aluminium foil protruding end 4 by metal ultrasonic bonding.
Further, described copper soft whipping wire 6 is arranged, is fixed between bonding pad 2 and aluminium foil protruding end 4 according to sine curve along 4 upper ends, aluminium foil protruding end, and described copper soft whipping wire 6, bonding pad 2 are realized electrical connection with aluminium foil protruding end 4 by metal ultrasonic bonding; The outside fuse exit as being connected with external circuit of element 1 is exposed at described copper soft whipping wire 6 two ends.
Further, the solder joint of fuse 3 and aluminium foil protruding end 4 is positioned at the side of aluminium foil protruding end 4, and the solder joint of copper soft whipping wire 6 and aluminium foil protruding end 4 is positioned at the end face of aluminium foil protruding end 4.
It is to be noted; as described above is only in order to explain the preferred embodiment of the utility model; not attempt is done any formal restriction to the utility model according to this; be with; all any modification or changes that has the relevant the utility model of doing under identical utility model spirit, all must be included in the category of the utility model intention protection.
Claims (3)
1. a capacitor body pin configuration, comprise and be arranged on the inner element (1) of barrier liner (5), the aluminium foil protruding end (4) that expose at element (1) two ends, fuse (3) and copper soft whipping wire (6), it is characterized in that, also comprise bonding pad (2), described bonding pad (2) forms holder and is clamped on described aluminium foil protruding end (4) after twice folds, described fuse (3) is positioned between bonding pad (2) and aluminium foil protruding end (4), described fuse (3), bonding pad (2) is realized electrical connection with aluminium foil protruding end (4) by metal ultrasonic bonding.
2. capacitor body pin configuration according to claim 2, it is characterized in that, described copper soft whipping wire (6) is arranged, is fixed between bonding pad (2) and aluminium foil protruding end (4) according to sine curve along upper end, aluminium foil protruding end (4), and described copper soft whipping wire (6), bonding pad (2) are realized electrical connection with aluminium foil protruding end (4) by metal ultrasonic bonding; The outside fuse exit as being connected with external circuit of element (1) is exposed at described copper soft whipping wire (6) two ends.
3. capacitor body pin configuration according to claim 1 and 2, is characterized in that, described bonding pad is flake aluminum or scale copper, be shaped as rectangle, four jiaos, rectangle is fillet, and length is 25mm～35mm, width is 15～25mm, and thickness is 0.05mm～0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420252829.6U CN203858983U (en) | 2014-05-16 | 2014-05-16 | Capacitor core lead structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420252829.6U CN203858983U (en) | 2014-05-16 | 2014-05-16 | Capacitor core lead structure |
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| Publication Number | Publication Date |
|---|---|
| CN203858983U true CN203858983U (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420252829.6U Expired - Fee Related CN203858983U (en) | 2014-05-16 | 2014-05-16 | Capacitor core lead structure |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006363A (en) * | 2015-05-15 | 2015-10-28 | 建德市新安江电力电容器有限责任公司 | Capacitor packet processing technology |
-
2014
- 2014-05-16 CN CN201420252829.6U patent/CN203858983U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006363A (en) * | 2015-05-15 | 2015-10-28 | 建德市新安江电力电容器有限责任公司 | Capacitor packet processing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20190516 |