CN115050587A - Capacitor assembly process with injection molding insulation part - Google Patents
Capacitor assembly process with injection molding insulation part Download PDFInfo
- Publication number
- CN115050587A CN115050587A CN202210498715.9A CN202210498715A CN115050587A CN 115050587 A CN115050587 A CN 115050587A CN 202210498715 A CN202210498715 A CN 202210498715A CN 115050587 A CN115050587 A CN 115050587A
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- Prior art keywords
- welding
- liquid injection
- liquid
- current collector
- upper cover
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003990 capacitor Substances 0.000 title claims abstract description 22
- 238000001746 injection moulding Methods 0.000 title claims abstract description 8
- 238000009413 insulation Methods 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims abstract description 62
- 238000002347 injection Methods 0.000 claims abstract description 47
- 239000007924 injection Substances 0.000 claims abstract description 47
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000003466 welding Methods 0.000 claims abstract description 35
- 238000001291 vacuum drying Methods 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 13
- 239000003792 electrolyte Substances 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 12
- 239000012212 insulator Substances 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000005465 channeling Effects 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/54—Electrolytes
- H01G11/58—Liquid electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G13/003—Apparatus or processes for encapsulating capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention discloses a capacitor assembly process with an injection molding insulating part, which comprises the following steps: s1: flattening the roll core; s2: welding a current collector, namely welding and fixing the lower current collector and the upper current collector with the winding core; s3: welding the upper cover, and fixedly welding the upper cover and the upper current collector; s4: putting the roll core into an aluminum shell and welding the roll core with the aluminum shell; s5: vacuum drying, namely putting the product obtained after the step S4 into a vacuum drying oven for drying; s6: injecting liquid, namely taking the product out of the vacuum drying oven, injecting liquid in a glove box or a drying room, and injecting electrolyte into a space between the outer circumference of the upper cover and the inner circumference of the aluminum shell during liquid injection; s7: the invention cancels the liquid injection hole, the electrolyte enters from the edge in the vacuum liquid injection process, the speed is high, the liquid injection hole does not need to be sealed by a rubber plug and an aluminum plug for the second time, and the working hours and the working procedures are saved.
Description
Technical Field
The invention belongs to the technical field of capacitors, and particularly relates to a capacitor assembly process with an injection molding insulating part.
Background
The super capacitor (also called electrochemical capacitor) is a novel charge storage element, and compared with a common battery, the super capacitor has the advantages of large power density, large-current charge and discharge support, long cycle life, environmental protection, no pollution, good temperature characteristic and large capacity compared with a common capacitor, so that the super capacitor has wide application prospect in the fields of new energy, transportation and industry, and is suitable for the fields of electric buses, automobile starting, wind power generation, power system power grid transformation and the like.
Present ultracapacitor system, structurally by rolling up the core, the aluminum hull, the upper cover, position such as leading-out terminal constitutes, leading-out terminal passes the upper cover and links to each other with the outside, for realizing leading-out of leading-out terminal, the upper cover adopts nonmetal to make in order to prevent leading-out terminal and aluminum hull switch-on usually, but this kind of upper cover is in the use, if external pressure is big, then very easily produce the deformation, and need to annotate the liquid head and support to compress tightly sealed on annotating the liquid hole when annotating the liquid, annotate the liquid hole and open when covering, the upper cover is easy to be annotated liquid head pressure deformation, be equipped with the trompil that is used for placeeing leading-out terminal on the capacitor, it produces and rocks to arouse leading-out terminal easily when assembling with leading-out terminal, influence the life of condenser.
The applicant applies for earlier, the name is a electric capacity with insulating part of moulding plastics, and it includes aluminum hull, book core, lower fluid collection body, upper cover and last fluid collection body, book core and last fluid collection body are arranged in the aluminum hull from bottom to top down, the upper cover is the metal upper cover, and the upper cover is arranged in on the fluid collection body and is connected with last fluid collection body, the top edge of upper cover is provided with the insulating part of moulding plastics, be provided with the sealing washer on the insulating part of moulding plastics, the top of aluminum hull inwards curls and presses on the sealing washer top surface, the bottom department that corresponds the insulating part of moulding plastics on the aluminum hull is provided with the rolling groove, the last rolling groove of aluminum hull supports on the insulating part of moulding plastics, and covers on it and has annotates the liquid hole, injects electrolyte to inside through annotating the liquid hole.
The existing capacitor with the upper cover provided with the liquid injection hole has the following problems that the liquid injection hole is small, the liquid injection efficiency is low, secondary sealing is required to be carried out by adopting an aluminum plug and a rubber plug, and the process is complicated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the liquid injection hole which is cancelled, the electrolyte enters from the edge in the vacuum liquid injection process, the speed is high, the liquid injection hole is not required to be sealed by a rubber plug and an aluminum plug for the second time, and the working hours and working procedures are saved.
In order to achieve the purpose, the invention provides the following technical scheme: a capacitor assembling process with an injection molding insulating part comprises the following steps:
s1: flattening the roll core, and pressing and flattening the aluminum foils on the two sides of the roll core;
s2: welding a current collector, namely fixing the lower current collector and the positive end of the winding core together by laser welding, and fixing the upper current collector and the negative end of the winding core together by laser welding;
s3: welding an upper cover, and fixing the upper cover and an upper current collector together by laser welding;
s4: putting the roll core into an aluminum shell, and welding and fixing the lower current collector and the bottom of the aluminum shell together by laser;
s5: vacuum drying, namely putting the product obtained after the step S4 into a vacuum drying oven for drying, and removing moisture in the product;
s6: injecting liquid, namely taking the product out of the vacuum drying oven, injecting liquid in a glove box or a drying room, and injecting electrolyte into a space between the outer circumference of the upper cover and the inner circumference of the aluminum shell during liquid injection;
s7: and sealing the upper end of the aluminum shell through a channeling machine to enable the upper end of the aluminum shell to be tightly pressed on the upper cover and sealed with the upper cover.
Further in step S6, adopt automatic vacuum to annotate liquid machine and annotate the liquid automatic vacuum annotate the liquid machine on be connected with and annotate the liquid mould, annotate the liquid mould including annotating the liquid cup, the bottom of annotating the liquid cup is provided with sealed the pad, when annotating the liquid, sealed the upper end of propping at the aluminum hull that fills.
Further, in step S6, a gasket is fitted over the upper cap before liquid injection, and in step S7, the upper end of the aluminum case is pressed against the gasket.
Further, in steps S2, S3 and S4, welding is performed using a 1-2KW continuous laser welding machine.
Further in step S5, the drying temperature in the vacuum drying oven is 160-180 ℃, the vacuum degree is less than or equal to 50Pa, and the time is 6-10 h.
Further, in step S6, the glove box or the dry room is evacuated to 5Pa or less, and then the injection is performed.
And further comprising a step S7 of cleaning the product finished in the step S6 to finish the assembly.
Compared with the prior art, the invention has the beneficial effects that:
1. the liquid injection hole is eliminated, and the electrolyte enters from the edge in the vacuum liquid injection process, so that the speed is high, and the working time is saved;
2. the liquid injection hole is cancelled, a rubber plug and an aluminum plug are not arranged, and the related procedures are omitted, so that the cost is saved;
3. the time of exposing the electrolyte to the air is short, and the service life of the product is longer;
4. the consistency of the injection amount of the procedure is better controlled by quantitative injection, and the product performance is improved;
5. the volatilization of the electrolyte is reduced, the electrolyte is saved, and the cost is reduced.
Drawings
FIG. 1 is a schematic diagram of the product after completion of step S5;
FIG. 2 is a schematic view of the product prior to injection;
FIG. 3 is a schematic view of the assembled product;
fig. 4 is a perspective view of the injection mold.
Reference numerals are as follows: 1. an aluminum shell; 11. rolling a groove; 2. a winding core; 3. an upper cover; 4. a lower current collector; 5. an upper current collector; 6. a seal ring; 7. injection molding an insulating part; 8. a liquid injection cup; 9. and a gasket.
Detailed Description
An embodiment of a capacitor assembly process with injection molded insulator according to the present invention is further described with reference to fig. 1 to 4.
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate that the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present invention.
Furthermore, if any, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a number" or "a number" means two or more unless explicitly specified otherwise.
A capacitor assembling process with an injection molding insulating part 7 comprises the following steps:
s1: flattening the roll core 2, and pressing and flattening the aluminum foils on the two sides of the roll core 2;
s2: welding a current collector, namely fixing the lower current collector 4 and the positive end of the winding core 2 together by laser welding, and fixing the upper current collector 5 and the negative end of the winding core 2 together by laser welding; during welding, a 1-2KW continuous laser welding machine is adopted for welding;
s3: welding the upper cover 3, and fixing the upper cover 3 and the upper current collector 5 together by laser welding; during welding, a 1-2KW continuous laser welding machine is adopted for welding;
s4: putting the product finished in the step S3 into the aluminum shell 1, and welding and fixing the lower current collector 4 and the bottom of the aluminum shell 1 together by laser;
during welding, a 1-2KW continuous laser welding machine is adopted for welding;
s5: vacuum drying, namely putting the product obtained after the step S4 into a vacuum drying oven for drying, and removing moisture in the product;
the drying temperature in the vacuum drying box is 160-180 ℃, the vacuum degree is less than or equal to 50Pa, and the time is 6-10 h;
s6: injecting liquid, namely taking the product out of the vacuum drying oven, injecting liquid into a glove box or a drying room, vacuumizing the glove box or the drying room to below 5Pa, and then injecting the liquid, wherein during injecting the liquid, the electrolyte is injected into a space between the outer circumference of the upper cover 3 and the inner circumference of the aluminum shell 1;
as shown in fig. 1, after step S5, aluminum shell 1 remains as it is, the top of aluminum shell is a cylindrical opening, and there is a large gap between the top of aluminum shell and upper cover 3, an automatic vacuum liquid injection machine is used to inject liquid, a liquid injection mold is connected to the automatic vacuum liquid injection machine, as shown in fig. 4, the liquid injection mold includes a liquid injection cup 8, a sealing gasket 9 is disposed at the bottom end of liquid injection cup 8, during liquid injection, sealing gasket 9 abuts against the upper end of aluminum shell 1, and the top end of liquid injection cup 8 is connected to the pump body and the liquid storage tank through a pipeline.
S7: and sealing the slot rolling 11, and sealing the upper end of the aluminum shell 1 through a slot rolling 11 machine after liquid injection is finished, so that the upper end of the aluminum shell 1 is tightly pressed on the upper cover 3 and is sealed with the upper cover 3.
In this embodiment, it is preferable that before filling, a gasket 6 is put on the upper cap 3, the gasket 6 is pressed against the injection-molded insulator 7 of the upper cap 1 in step S6, and the upper end of the aluminum case 1 is pressed against the gasket 6 in step S7.
The present embodiment preferably further includes a step S7, where the product completed in the step S6 is cleaned to complete the assembly.
In this embodiment, the sealing of the electrolyte is completed when the rolling groove 11 of the aluminum case 1 is sealed, and a separate secondary process is not required.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. A capacitor assembling process with an injection molding insulating part is characterized by comprising the following steps:
s1: flattening the roll core, and pressing and flattening the aluminum foils on the two sides of the roll core;
s2: welding a current collector, namely fixing the lower current collector and the positive end of the winding core together by laser welding, and fixing the upper current collector and the negative end of the winding core together by laser welding;
s3: welding an upper cover, and fixing the upper cover and an upper current collector together by laser welding;
s4: putting the roll core into an aluminum shell, and welding and fixing the lower current collector and the bottom of the aluminum shell together by laser;
s5: vacuum drying, namely putting the product obtained after the step S4 into a vacuum drying oven for drying, and removing moisture in the product;
s6: injecting liquid, namely taking the product out of the vacuum drying oven, injecting the liquid into a glove box or a drying room, and injecting electrolyte into a space between the outer circumference of the upper cover and the inner circumference of the aluminum shell during liquid injection;
s7: and sealing the upper end of the aluminum shell through a channeling machine to enable the upper end of the aluminum shell to be tightly pressed on the upper cover and sealed with the upper cover.
2. A process for assembling a capacitor having an injection molded insulator as claimed in claim 1, wherein: in step S6, an automatic vacuum liquid injection machine is used for injecting liquid, a liquid injection mold is connected to the automatic vacuum liquid injection machine, the liquid injection mold comprises a liquid injection cup, a sealing gasket is arranged at the bottom end of the liquid injection cup, and the sealing gasket abuts against the upper end of the aluminum shell during liquid injection.
3. A process for assembling a capacitor having an injection molded insulator as claimed in claim 2, wherein: before the liquid injection, a gasket is fitted over the upper cap in step S6, and the upper end of the aluminum case is pressed against the gasket in step S7.
4. A process for assembling a capacitor having an injection molded insulator as claimed in claim 3, wherein: in steps S2, S3, and S4, welding is performed using a 1-2KW continuous laser welder.
5. A process for assembling a capacitor having an injection molded insulator as claimed in claim 4, wherein: in step S5, the drying temperature in the vacuum drying oven is 160-180 ℃, the vacuum degree is less than or equal to 50Pa, and the time is 6-10 h.
6. A process for assembling a capacitor having an injection molded insulator as claimed in claim 5, wherein: in step S6, the glove box or the drying chamber is evacuated to 5Pa or less, and then the injection is performed.
7. A process for assembling a capacitor having an injection molded insulator as claimed in claim 6, wherein: and step S7, cleaning the product finished in the step S6, and finishing the assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210498715.9A CN115050587A (en) | 2022-05-09 | 2022-05-09 | Capacitor assembly process with injection molding insulation part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210498715.9A CN115050587A (en) | 2022-05-09 | 2022-05-09 | Capacitor assembly process with injection molding insulation part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115050587A true CN115050587A (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210498715.9A Pending CN115050587A (en) | 2022-05-09 | 2022-05-09 | Capacitor assembly process with injection molding insulation part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115050587A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350337A (en) * | 2000-09-26 | 2002-05-22 | 日本电气移动能株式会社 | Closed cell and method for manufacturing the same |
| CN104867701A (en) * | 2015-06-12 | 2015-08-26 | 肇庆绿宝石电子科技股份有限公司 | Manufacturing method of supercapacitor |
| CN207852734U (en) * | 2017-12-27 | 2018-09-11 | 武汉昊诚能源科技有限公司 | Hermetically sealed lithium battery cap group structure |
-
2022
- 2022-05-09 CN CN202210498715.9A patent/CN115050587A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350337A (en) * | 2000-09-26 | 2002-05-22 | 日本电气移动能株式会社 | Closed cell and method for manufacturing the same |
| CN104867701A (en) * | 2015-06-12 | 2015-08-26 | 肇庆绿宝石电子科技股份有限公司 | Manufacturing method of supercapacitor |
| CN207852734U (en) * | 2017-12-27 | 2018-09-11 | 武汉昊诚能源科技有限公司 | Hermetically sealed lithium battery cap group structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220913 |
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| RJ01 | Rejection of invention patent application after publication |