CN115172063A - High-temperature packaging method for liquid aluminum electrolytic capacitor - Google Patents
High-temperature packaging method for liquid aluminum electrolytic capacitor Download PDFInfo
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- CN115172063A CN115172063A CN202210643473.8A CN202210643473A CN115172063A CN 115172063 A CN115172063 A CN 115172063A CN 202210643473 A CN202210643473 A CN 202210643473A CN 115172063 A CN115172063 A CN 115172063A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 102
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 37
- 239000007788 liquid Substances 0.000 title claims abstract description 29
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 99
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 239000011888 foil Substances 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000003792 electrolyte Substances 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 14
- 238000007664 blowing Methods 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 claims 3
- 239000011265 semifinished product Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/145—Liquid electrolytic capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/0029—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
Abstract
The invention provides a high-temperature packaging method of a liquid aluminum electrolytic capacitor, which comprises the steps of inserting an anode foil and a cathode foil with oxide films on the surfaces into electrolytic paper and winding the electrolytic paper into a core package; drying and dehumidifying the core bag, immersing the core bag in electrolyte, installing a rubber plug or a sealing cover plate, and filling the core bag into an aluminum shell; heating to 60-135 deg.c with high temperature heater; packaging at high temperature by using a waist binding wheel and a sealing needle clamp; the heat shrinkable tube is sleeved, and the heat shrinkable tube is heated to shrink the finished product, the invention has the beneficial effects that: the liquid aluminum electrolytic capacitor is added with high-temperature packaging, so that the interior of the liquid aluminum electrolytic capacitor is in a vacuum negative pressure state, the liquid aluminum electrolytic capacitor is not easy to bulge when working in a high-temperature environment or high-power high-load work, the air expansion explosion probability is effectively reduced, bubbles generated in the work of a product are quickly displaced, liquid is quickly circulated, the self-repairing capacity of the product is improved, the safe application and installation of the liquid aluminum electrolytic capacitor in the high-temperature environment or high-power high-load work are successfully realized, the reliable service life is prolonged, the safety and stability are high, and the application range is wide.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of liquid aluminum electrolytic capacitor packaging, in particular to a high-temperature packaging method for a liquid aluminum electrolytic capacitor.
[ background of the invention ]
The liquid aluminum electrolytic capacitor product applied to new energy automobile electronics is quite wide nowadays, and new requirements are put forward on the reliability of the capacitor product in adapting to outdoor high-temperature, high-power, low-internal-resistance characteristics and the like while the new energy automobile electronics are rapidly developed; in addition, in the links of application and high-temperature assembly of high-efficiency and high-power electronic products, higher index requirements are provided for the aluminum electrolytic capacitor, for example, the ambient temperature of the aluminum electrolytic capacitor in the running process of an automobile can reach hundreds of degrees, the equipment temperature during welding reflow in the production of various vehicle-mounted mainboards can reach 270 degrees, and the traditional capacitor preparation method and material process cannot realize breakthrough meeting the requirements; when the capacitor manufactured by the traditional capacitor manufacturing method works in a high-temperature environment or a high-power high-load work, the internal resistance of the capacitor is easy to generate air expansion bubbles, and the internal structure is deformed and expanded, so that the service life of the product is greatly shortened, air expansion open circuit failure is possibly caused, and the safety stability of the product manufactured by the traditional method is low when the product works in the high-temperature environment or the high-power high-load work.
[ summary of the invention ]
The invention aims to solve the problems existing in the traditional capacitor preparation method and provides a high-temperature packaging method for a liquid aluminum electrolytic capacitor.
The invention is realized by the following technical scheme: a high-temperature packaging method for a liquid aluminum electrolytic capacitor comprises the following steps:
s1, sequentially interposing electrolytic paper between an anode foil and a cathode foil which are made of aluminum foils and provided with oxide films on the surfaces, and winding the electrolytic paper into a core package;
s2, drying and dehumidifying the core bag, immersing the core bag in electrolyte, inserting a lead rubber plug or a link horn bolt sealing cover plate on the core bag, and filling the core bag into an aluminum shell of a capacitor to form a semi-finished capacitor;
s3, sequentially contacting the semi-finished capacitor combined in the step S2 with a high-temperature heating body for heating or blowing high-temperature air flow for heating, and controllably heating to 60-135 ℃ according to the product characteristics and the technical index requirements;
s4, after the semi-finished capacitor reaches the technically specified temperature, fixing the semi-finished capacitor by using a girdling wheel, and carrying out high-temperature packaging by using a sealing needle clamp so that the semi-finished capacitor is sealed at the specified temperature to girdle, thereby realizing sealing of the interior of the semi-finished capacitor;
and S5, sleeving the sealed semi-finished capacitor into a heat-shrinkable tube, and heating the heat-shrinkable tube to shrink the finished product, thereby completing the packaging of the liquid aluminum electrolytic capacitor.
Further, the high-temperature heating element in S3 is a temperature control heating tank and/or a hot air heating device, the temperature control heating tank includes a heating tank main body, a heating resistor, a temperature controller, and a temperature control probe, the upper portion of the heating tank main body is a U-shaped tank through which the semi-finished capacitor flows, the lower portion of the heating tank main body is a base provided with the heating resistor, the heating resistor continuously heats the U-shaped tank on the upper portion of the heating tank main body through power supplied from an external power supply, the heating tank main body is externally connected with the temperature controller, the temperature controller is in signal connection with the heating resistor through a circuit, the temperature controller is a switch of the heating resistor and a temperature adjusting device, the heating tank main body is provided with the temperature control probe, the temperature control probe is in signal connection with the temperature controller, and the temperature control probe is a temperature monitoring device of the heating tank main body; the hot air heating device is a hot air heating groove or a hot air heating air nozzle, and the semi-finished capacitor is heated by blowing hot air through the hot air heating device.
Further, in the step S3, the semi-finished capacitor is heated, and the constant temperature, the heating speed and the heating time which are continuously generated can be set for the high-temperature heating element according to the product characteristics and the index requirements, so that the semi-finished capacitor passing through the high-temperature heating element reaches the specified temperature.
Further, the semi-finished capacitor is heated in the step S3 and the semi-finished capacitor which is kept at the specified temperature is packaged at the step S4, so that the air density of the residual space in the semi-finished capacitor can be effectively reduced, when the packaged capacitor is in an environment with the temperature lower than the packaging temperature, the air density in the capacitor is lower than that in the outside, and the inside of the capacitor is always kept in a larger vacuum negative pressure state.
Furthermore, the waist binding wheel in the step S4 is a capacitor waist binding clamp at normal temperature or a capacitor high-temperature waist binding clamp continuously heated, and the sealing needle clamp is a capacitor sealing clamp at normal temperature or a capacitor high-temperature sealing clamp continuously heated.
The invention has the beneficial effects that: this application is through applying high temperature back product encapsulation to liquid aluminum electrolytic capacitor assembling process, make the inside vacuum negative pressure state that forms of product, be difficult to take place to swell when being applied to high temperature environment work or high power high load work, effectively reduce liquid aluminum electrolytic capacitor inflatable explosion's probability, improve the quick displacement efficiency of the bubble that produces in the work of product, make liquid quick cycle, greatly increased product self-repair function, the safe application and the installation of liquid aluminum electrolytic capacitor in the work of successful solution high temperature environment work or high power high load work, the reliable life of extension liquid aluminum electrolytic capacitor, safety and stability is high, wide application.
[ description of the drawings ]
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic structural diagram of a liquid aluminum electrolytic capacitor according to the present invention;
FIG. 3 is an exploded view of a semi-finished capacitor of the present invention;
FIG. 4 is a schematic view showing a structure of a high temperature heating element of the present invention;
FIG. 5 is a schematic structural view of the high-frequency heating fixture and the heating beam mold fixture of the present invention;
reference numerals: 1. a liquid aluminum electrolytic capacitor; 11. a core package; 12. the cover plate is sealed by the ox horn bolt; 13. an aluminum housing; 14. heat shrink tubing; 2. a high-temperature heating element; 21. heating the tank body; 22. a heating resistor; 23. a temperature controller; 24. a temperature control probe; 3. a waist binding wheel; 4. a seal pin clamp.
[ detailed description ] A
The invention is further described with reference to the accompanying drawings and the detailed description:
as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a high-temperature packaging method for a liquid aluminum electrolytic capacitor includes the following steps:
s1, sequentially interposing electrolytic paper between an anode foil and a cathode foil which are made of aluminum foil and provided with oxide films on the surfaces, and winding the electrolytic paper into a core package 11;
s2, drying and dehumidifying the core bag 11, immersing the core bag into electrolyte, inserting a lead rubber plug or a link horn bolt sealing cover plate 12 on the core bag 11, and filling the core bag into an aluminum shell 13 of a capacitor to form a semi-finished capacitor;
s3, sequentially contacting the semi-finished capacitor combined in the S2 with a high-temperature heating body 2 for heating or blowing high-temperature air flow for heating, and controllably heating to 60-135 ℃ according to the product characteristics and the technical index requirements;
s4, after the semi-finished capacitor reaches the technical designated temperature, fixing the semi-finished capacitor by using the girdling wheel 3, and carrying out high-temperature packaging by using the sealing needle clamp 4, so that the semi-finished capacitor is sealed at the designated temperature to realize sealing of the interior of the semi-finished capacitor;
s5, sleeving the sealed semi-finished capacitor into the heat shrinkable tube 14, and heating the heat shrinkable tube 14 to shrink the finished product, so as to finish the packaging of the liquid aluminum electrolytic capacitor 1.
Preferably, the high-temperature heating element 2 in S3 is a temperature-controlled heating tank and/or a hot air heating device, the temperature-controlled heating tank includes a heating tank main body 21, a heating resistor 22, a temperature controller 23, and a temperature-controlled probe 24, the upper portion of the heating tank main body 21 is a U-shaped tank through which the semi-finished capacitor flows, the lower portion of the heating tank main body is a base provided with the heating resistor 22, the heating resistor 22 continuously heats the U-shaped tank on the upper portion of the heating tank main body 21 by supplying power from an external power supply, the heating tank main body 21 is externally connected with the temperature controller 23, the temperature controller 23 is in signal connection with the heating resistor 22 through a circuit, the temperature controller 23 is a switch and a temperature adjusting device of the heating resistor 22, the heating tank main body 21 is provided with the temperature-controlled probe 24, the temperature-controlled probe 24 is in signal connection with the temperature controller 23, and the temperature-controlled probe 24 is a temperature monitoring device of the heating tank main body 21; the hot air heating device is a hot air heating groove or a hot air heating air nozzle, and the semi-finished capacitor is heated by blowing hot air to the hot air heating device.
Preferably, in the step S3, the semi-finished capacitor is heated, and the constant temperature, the heating speed and the heating time which are continuously generated can be set for the high-temperature heating element 2 according to the product characteristics and the index requirements, so that the semi-finished capacitor passing through the high-temperature heating element 2 reaches the specified temperature.
Preferably, the semi-finished capacitor is heated in the step S3 and the semi-finished capacitor with the specified temperature is packaged at a high temperature in the step S4, so that the air density of the residual space in the semi-finished capacitor can be effectively reduced, when the packaged capacitor is in an environment with the temperature lower than the packaging temperature, the air density in the capacitor is lower than that in the outside, and the interior of the capacitor is always kept in a relatively large vacuum negative pressure state.
Preferably, in S4, the girdling wheel 3 is a capacitor girdling clamp at normal temperature or a capacitor high-temperature girdling clamp continuously heated, and the sealing needle clamp 4 is a capacitor sealing clamp at normal temperature or a capacitor high-temperature sealing clamp continuously heated.
Since modifications and variations of the embodiments described above will occur to those skilled in the art in light of the teachings and teachings of the foregoing description, it is not intended to limit the invention to the particular embodiments disclosed and described, but rather, it is intended that all such modifications and variations be included within the scope of the invention as defined by the following claims. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (5)
1. A high-temperature packaging method for a liquid aluminum electrolytic capacitor is characterized by comprising the following steps:
s1, sequentially interposing electrolytic paper between an anode foil and a cathode foil which are made of aluminum foils and provided with oxide films on the surfaces, and winding the electrolytic paper into a core package;
s2, drying and dehumidifying the core bag, immersing the core bag in electrolyte, inserting a lead rubber plug or a link horn bolt sealing cover plate on the core bag, and filling the core bag into an aluminum shell of a capacitor to form a semi-finished capacitor;
s3, sequentially contacting the semi-finished capacitor combined in the step S2 with a high-temperature heating body for heating or blowing high-temperature air flow for heating, and controllably heating to 60-135 ℃ according to the product characteristics and the technical index requirements;
s4, after the semi-finished capacitor reaches the technical designated temperature, fixing the semi-finished capacitor by using a girdling wheel, and carrying out high-temperature packaging by using a sealing needle clamp, so that the girdling of the semi-finished capacitor is sealed at the designated temperature, and the sealing of the interior of the semi-finished capacitor is realized;
and S5, sleeving the sealed semi-finished capacitor into a heat-shrinkable tube, and heating the heat-shrinkable tube to shrink the finished product, thereby completing the packaging of the liquid aluminum electrolytic capacitor.
2. The high-temperature packaging method for the liquid aluminum electrolytic capacitor as claimed in claim 1, wherein: the heating device comprises a heating tank body, a heating resistor, a temperature controller and a temperature control probe, wherein the high-temperature heating body in the S3 is a temperature control heating tank and/or a hot air heating device, the temperature control heating tank comprises the heating tank body, the heating resistor, the temperature controller and the temperature control probe, the upper part of the heating tank body is a U-shaped tank through which semi-finished capacitor flowing water passes, the lower part of the heating tank body is a base provided with the heating resistor, the heating resistor supplies power to the U-shaped tank on the upper part of the heating tank body through an external power supply to continuously heat, the heating tank body is externally connected with the temperature controller, the temperature controller is in signal connection with the heating resistor through a circuit, the temperature controller is a switch and a temperature adjusting device of the heating resistor, the heating tank body is provided with the temperature control probe, the temperature control probe is in signal connection with the temperature controller, and the temperature control probe is a temperature monitoring device of the heating tank body; the hot air heating device is a hot air heating groove or a hot air heating air nozzle, and the semi-finished capacitor is heated by blowing hot air to the hot air heating device.
3. The high-temperature packaging method for the liquid aluminum electrolytic capacitor as recited in claim 2, wherein: and S3, heating the semi-finished product capacitor, wherein the constant temperature, the constant heating speed and the constant heating time which are continuously generated can be set for the high-temperature heating element according to the product characteristics and index requirements, so that the semi-finished product capacitor passing through the high-temperature heating element reaches the specified temperature.
4. The high-temperature packaging method for the liquid aluminum electrolytic capacitor as claimed in claim 1, wherein: and heating the semi-finished capacitor in the step S3 and packaging the semi-finished capacitor keeping the specified temperature at high temperature in the step S4, so that the air density of the residual space in the semi-finished capacitor can be effectively reduced, when the packaged capacitor is in an environment with the temperature lower than the packaging temperature, the air density in the capacitor is lower than that in the outside, and the inside of the capacitor is always kept in a larger vacuum negative pressure state.
5. The high-temperature packaging method for the liquid aluminum electrolytic capacitor as recited in claim 1, wherein: and in the S4, the waist binding wheel is a normal-temperature capacitor waist binding clamp or a continuously heated capacitor high-temperature waist binding clamp, and the sealing needle clamp is a normal-temperature capacitor sealing clamp or a continuously heated capacitor high-temperature sealing clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210643473.8A CN115172063B (en) | 2022-06-09 | 2022-06-09 | High-temperature packaging method for liquid aluminum electrolytic capacitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210643473.8A CN115172063B (en) | 2022-06-09 | 2022-06-09 | High-temperature packaging method for liquid aluminum electrolytic capacitor |
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| Publication Number | Publication Date |
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| CN115172063A true CN115172063A (en) | 2022-10-11 |
| CN115172063B CN115172063B (en) | 2024-02-06 |
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| CN202210643473.8A Active CN115172063B (en) | 2022-06-09 | 2022-06-09 | High-temperature packaging method for liquid aluminum electrolytic capacitor |
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| JP2002190434A (en) * | 2000-12-22 | 2002-07-05 | Jcc Engineering Co Ltd | Method and device for manufacturing solid aluminum electrolytic capacitor |
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| CN112735864A (en) * | 2020-11-30 | 2021-04-30 | 珠海格力新元电子有限公司 | Heat treatment method before assembly of chip capacitor assembly |
| CN113593916A (en) * | 2021-08-03 | 2021-11-02 | 安远秦旭科技有限公司 | Preparation process of aluminum electrolytic capacitor special for electric vehicle controller |
-
2022
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| JP2002190434A (en) * | 2000-12-22 | 2002-07-05 | Jcc Engineering Co Ltd | Method and device for manufacturing solid aluminum electrolytic capacitor |
| JP2014187278A (en) * | 2013-03-25 | 2014-10-02 | Elna Co Ltd | Aluminum electrolytic capacitor |
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| CN115172063B (en) | 2024-02-06 |
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