CN113643898A - Vacuum heat treatment method for thin film capacitor core - Google Patents
Vacuum heat treatment method for thin film capacitor core Download PDFInfo
- Publication number
- CN113643898A CN113643898A CN202111200977.4A CN202111200977A CN113643898A CN 113643898 A CN113643898 A CN 113643898A CN 202111200977 A CN202111200977 A CN 202111200977A CN 113643898 A CN113643898 A CN 113643898A
- Authority
- CN
- China
- Prior art keywords
- core
- film capacitor
- oven
- tank body
- heat treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 116
- 238000010438 heat treatment Methods 0.000 title claims abstract description 59
- 239000010409 thin film Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000010408 film Substances 0.000 claims abstract description 31
- 238000004321 preservation Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000011104 metalized film Substances 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 6
- 238000005086 pumping Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000725 suspension Substances 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
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/33—Thin- or thick-film capacitors (thin- or thick-film circuits; capacitors without a potential-jump or surface barrier specially adapted for integrated circuits, details thereof, multistep manufacturing processes therefor)
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses a vacuum heat treatment method for a thin film capacitor core, which comprises the following steps: insulating high-temperature-resistant rubber rings are sleeved on the positions, close to the two ends, of the thin-film capacitor core; the thin film capacitor core is arranged in the core tank body and is sealed through the tank cover; vacuumizing the core tank body by using a vacuum pump; placing the core tank body in an oven, wherein air is filled in the oven; setting a temperature rise program of the oven, starting the oven, and carrying out heat treatment according to a preset temperature; and after the heat treatment procedure of the oven is completed, taking out the thin film capacitor core, removing the rubber ring, and completing the vacuum heat treatment of the thin film capacitor core. The invention obviously improves the local heating uniformity of each part of the film capacitor core, the capacitor has consistent shrinkage, the air gap and the internal stress of the capacitor are improved, the voltage resistance and the charge-discharge capacity of the capacitor are obviously improved, the service life of the capacitor is prolonged, the vacuum pump for vacuumizing has small power and noise, and is beneficial to energy conservation and noise reduction.
Description
Technical Field
The invention relates to a processing method of a thin film capacitor core, in particular to a vacuum heat treatment method of the thin film capacitor core.
Background
With the development of the modern scientific and technical level, the updating period of a plurality of industries such as electronics, household appliances, communication and the like is shorter and shorter. The metallized film capacitor is an indispensable electronic element for promoting the updating of the industries by virtue of good electrical performance and high reliability of the metallized film capacitor, and is widely applied to the military fields of aviation, aerospace, weaponry and the like. In recent years, with further development of digitization, informatization and networking construction, increasing investment of the country in the aspects of power grid construction, electrified railway construction, energy-saving illumination, hybrid electric vehicles and the like and upgrading of consumer electronic products, the application field of the film capacitor, particularly the metalized film capacitor, is more and more extensive. The market demand for metallized film capacitors has driven a series of technological innovations in metallized film capacitors. The heat treatment process of the metallized film capacitor is a key influencing the electrical property of the capacitor, and scholars at home and abroad make a great deal of research to improve the voltage and the current resistance of the film capacitor through the heat treatment process. On one hand, the capacitor core is shrunk and shaped under the action of high temperature, gap air between film layers is eliminated, and the phenomenon that the capacitor fails due to the fact that the capacitor is damaged by the ionization breakdown of the gap air under the charged condition of the capacitor is prevented; on the other hand, the heating under the vacuum condition can effectively prevent the film layer and the end surface of the capacitor core from being oxidized, improve the current resistance of the capacitor and reduce the loss tangent value of the capacitor.
The traditional vacuum heat treatment method of the thin-film capacitor core is that the capacitor core is directly placed in an oven, the whole oven is vacuumized by a vacuum pump, then temperature setting is carried out, the vacuum oven is heated to a target temperature, heat is preserved for a certain time, and then the temperature is naturally reduced.
Although the oxidation of the internal electrode of the capacitor can be effectively stopped by the vacuum heat treatment of the traditional film capacitor core, the loss of the capacitor is reduced, and the current resistance of the capacitor is improved, the following defects exist:
1. the vacuum oven has the advantages that air in the vacuum oven is thin, air convection does not exist, the temperature in the oven is mainly raised by radiation heating, the temperature difference of different positions in the oven body is large, the capacitor core is directly stacked in the vacuum cavity, different positions of the capacitor core are heated unevenly, the shrinkage of a product is inconsistent, an air gap and stress exist in the product, the air gap and the internal stress of the product are increased, the voltage resistance and the charging and discharging capacity of the capacitor are reduced, and the service life of the capacitor is prolonged.
2. The cavity of the oven is too large, the power of the required vacuum pump is large, the production noise is large, the difficulty in realizing the vacuum degree is relatively large, the efficiency is not high, and the energy consumption is large.
Disclosure of Invention
The invention aims to solve the problems and provide a vacuum heat treatment method for a thin-film capacitor core, wherein the capacitor core is uniformly heated.
The invention realizes the purpose through the following technical scheme:
a vacuum heat treatment method for a thin film capacitor core comprises the following steps:
step 5, setting a temperature rise program of the oven, starting the oven, and carrying out heat treatment according to a preset temperature;
and 6, after the heat treatment procedure of the oven is completed, closing the power supply of the oven, opening the door of the oven, taking out the core tank body, slowly releasing air into the core tank body, opening the core tank body after the air pressure in the core tank body is balanced with the atmospheric pressure, taking out the core of the film capacitor, removing the rubber ring, and completing the vacuum heat treatment of the core of the film capacitor.
Preferably, in order to heat the thin film capacitor core more uniformly, in the step 3, the vacuum degree of the core tank after vacuum pumping is-0.1 MPa.
Preferably, in step 5, the temperature raising procedure of the oven is as follows: first-stage temperature rise: heating for 30min at room temperature to 85 ℃; and (3) second-stage heat preservation: keeping the temperature at 85 ℃ for 4 h; and (3) heating in the third stage: heating for 15min at 85-105 ℃; and (4) heat preservation in the fourth stage: keeping the temperature at 105 ℃ for 12 h; and (5) cooling in the fifth stage: 105-30 ℃ for 12 h.
Preferably, in order to facilitate heat transfer of the core tank and uniform heat radiation, the core tank is a metal tank and the inner wall of the core tank is smooth.
The invention has the beneficial effects that:
according to the invention, each film capacitor core is arranged in the corresponding core tank body and positioned through the insulating high-temperature-resistant rubber ring, namely, the film capacitor cores are insulated and suspended, so that almost no heat conduction and heat convection exist in a heat transfer path in the core tank body, and only single heat radiation transfers heat, thus the local heating uniformity of each part of the film capacitor cores is obviously improved, the contraction of the capacitor is consistent, the air gap and the internal stress of the capacitor are improved, the voltage resistance and the charge-discharge capacity of the capacitor are obviously improved, and the service life of the capacitor is prolonged; the core tanks are in the air in the oven, and each core tank is uniformly heated by utilizing air convection, so that the heating condition of each thin film capacitor core in the same batch is the same, and the voltage withstanding level and the charging and discharging service life consistency of the thin film capacitor cores in the same batch are improved; the core tank has small inner cavity volume, can realize vacuum pumping operation by using a small vacuum pump, has small power and low noise, is convenient for realizing vacuum pumping and is beneficial to energy conservation and noise reduction.
Drawings
FIG. 1 is a schematic perspective view of a film capacitor core covered with a rubber ring according to the present invention;
FIG. 2 is a schematic perspective view of the core can of the present invention incorporated into a thin film capacitor core;
FIG. 3 is a schematic front view of the cartridge body of the present invention during evacuation.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1, the film capacitor core 1 of the present invention is cylindrical, and two rubber rings 2 are respectively sleeved on the film capacitor core 1 near to two ends of the film capacitor core 1, so as to facilitate the suspension positioning of the film capacitor core 1 in the core tank body; as shown in fig. 2, the core tank 3 of the invention is rectangular in shape, so as to be beneficial to being placed in an oven without rolling, the inner cavity of the core tank is cylindrical, the inner diameter of the inner cavity is larger than the outer diameter of the film capacitor core 1 and larger than the outer diameter of the rubber ring 2, the tank cover 4 can completely seal the core tank 3, and is provided with an air pipe, a valve and the like for vacuumizing, keeping vacuum and removing vacuum; as shown in fig. 3, the vacuum pump 6 is connected with the air pipe of the core tank 3 through the connecting pipe 5, so as to complete the vacuum pumping operation, then the valve of the core tank 3 is closed, so as to maintain the vacuum state, and the valve of the core tank 3 is opened by a small amount, so that the atmosphere can be slowly put into the core tank 3, thereby achieving the purpose of relieving the vacuum.
Example (b):
referring to fig. 1 to 3, a vacuum heat treatment method for a thin film capacitor core includes the following steps:
step 5, setting a temperature rise program of the oven, starting the oven, and carrying out heat treatment according to a preset temperature; the temperature rise procedure of the oven was as follows: first-stage temperature rise: heating for 30min at room temperature to 85 ℃; and (3) second-stage heat preservation: keeping the temperature at 85 ℃ for 4 h; and (3) heating in the third stage: heating for 15min at 85-105 ℃; and (4) heat preservation in the fourth stage: keeping the temperature at 105 ℃ for 12 h; and (5) cooling in the fifth stage: at the temperature of 105-30 ℃, for 12 hours;
and 6, after the heat treatment procedure of the oven is completed, closing the power supply of the oven, opening the door of the oven, taking out the core tank body 3, slowly deflating the core tank body 3, opening the core tank body 3 after the air pressure in the core tank body 3 is balanced with the atmospheric pressure, taking out the film capacitor core 1, removing the rubber ring 2, and completing the vacuum heat treatment of the film capacitor core 1.
In order to verify the remarkable effect of the present invention, the following heat treatment test of three sets of thin film capacitor cores is exemplified.
30 wound metallized film capacitor cores are divided into three groups, each group comprises 10 wound metallized film capacitor cores, the single-core capacity of each capacitor core is 40 mu F, and the 30 wound metallized film capacitor cores are numbered, wherein the basic test parameters of the A group (A1-A10), the B group (B1-B10) and the C group (C1-C10) are as follows.
Group A:
group B:
group C:
the capacitor cores of the group A, the group B and the group C are respectively subjected to three heat treatment modes, and the heat treatment steps are as follows:
group A:
step 1: the capacitor cores are placed in an oven with air in order, and the oven door of the oven is closed;
step 2: setting a temperature rise program of the oven, which comprises the following specific steps:
first-stage temperature rise: heating for 30min at room temperature to 85 ℃;
and (3) second-stage heat preservation: keeping the temperature at 85 ℃ for 4 h;
and (3) heating in the third stage: heating for 15min at 85-105 ℃;
and (4) heat preservation in the fourth stage: keeping the temperature at 105 ℃ for 12 h;
and (5) cooling in the fifth stage: naturally cooling;
and step 3: starting the oven, and carrying out heat treatment on the capacitor core according to a preset temperature;
and 4, step 4: and after the program is run, closing the power supply of the oven, opening the door of the oven, taking out the capacitor core, putting the capacitor core into a turnover box, and measuring the breakdown voltage and the charge-discharge service life.
Group B:
step 1: the capacitor cores are placed in the oven in order, and the oven door of the oven is closed to ensure good air tightness;
step 2: vacuumizing the oven by using a high-power vacuum pump, wherein the vacuum degree is-0.1 MPa, and closing a vacuum valve of the oven to prevent the oven from leaking air;
and step 3: setting a temperature rise program of the oven, which comprises the following specific steps:
first-stage temperature rise: heating for 30min at room temperature to 85 ℃;
and (3) second-stage heat preservation: keeping the temperature at 85 ℃ for 4 h;
and (3) heating in the third stage: heating for 15min at 85-105 ℃;
and (4) heat preservation in the fourth stage: keeping the temperature at 105 ℃ for 12 h;
and (5) cooling in the fifth stage: naturally cooling;
and 4, step 4: starting the oven, and carrying out heat treatment on the core according to a preset temperature;
and 5: and after the program is run, closing the power supply of the oven, opening the door of the oven, taking out the capacitor core, putting the capacitor core into a turnover box, and measuring the breakdown voltage and the charge-discharge service life.
Group C:
step 1: sleeving the capacitor core on an insulating high-temperature-resistant rubber ring;
step 2: opening the core tank body, putting the capacitor core sleeved with the rubber ring into the core tank body, and covering a tank cover to ensure the sealing property of the core tank body;
and step 3: vacuumizing the core tank body by a small vacuum pump, wherein the vacuum degree is-0.1 MPa, and closing a valve to prevent the core tank body from leaking air; repeating the steps 1 to 3 to obtain 10 core tank bodies which are provided with capacitor cores and are vacuumized;
and 4, step 4: putting 10 core tanks with capacitor cores in an air oven in order, and closing the door of the oven;
and 5: setting a temperature rise program of the oven, which comprises the following specific steps:
first-stage temperature rise: heating for 30min at room temperature to 85 ℃;
and (3) second-stage heat preservation: keeping the temperature at 85 ℃ for 4 h;
and (3) heating in the third stage: heating for 15min at 85-105 ℃;
and (4) heat preservation in the fourth stage: keeping the temperature at 105 ℃ for 12 h;
and (5) cooling in the fifth stage: at the temperature of 105-30 ℃, for 12 hours; (ii) a
Step 6: starting the oven, and carrying out heat treatment on the capacitor core according to a preset temperature;
and 7: and after the program is operated, closing a power supply of the oven, opening a door of the oven, taking out the core tank body, slowly releasing air into the core tank body, opening the core tank body after the air pressure in the core tank body is balanced with the atmospheric pressure, taking out the capacitor core, removing the rubber ring, putting the capacitor core into a turnover box, measuring the breakdown voltage and the charging and discharging service life.
And (3) carrying out voltage breakdown test on 30 capacitor cores after heat treatment, wherein 5 (A1-A5, B1-B5 and C1-C5) products are selected in each group, and 5000 times of charge-discharge life test is carried out on 5 (A6-A10, B6-B10 and C6-C10) products, wherein the charge voltage is 4kV, the discharge current is 3kA, and the charge-discharge cycle is 5 s/time.
The experimental results are as follows:
capacitance breakdown voltage:
group A:
group B:
group C:
capacity loss after 5000 life tests:
group A:
group B:
group C:
and (4) conclusion:
1. in the traditional heat treatment method, the vacuum-pumping mode is improved to a certain extent compared with the air mode, so that the loss and ESR of the capacitor core are improved, the voltage resistance and the charge-discharge service life of the capacitor core are improved, but the basic parameter fluctuation of the electrical performance of the capacitor core is large, and the consistency is poor.
2. Compared with the traditional vacuumizing mode, the capacitor core treated by the vacuum heat treatment method of the film capacitor core provided by the invention has the advantages that the loss and ESR of the capacitor core are improved more remarkably, the voltage resistance and the charge-discharge service life of the capacitor core are further improved remarkably, the electrical property consistency of the capacitor core is good, and the reliability of the capacitor core is enhanced.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.
Claims (4)
1. A vacuum heat treatment method for a thin film capacitor core is characterized by comprising the following steps: the method comprises the following steps:
step 1, sheathing an insulating high-temperature-resistant rubber ring at a position close to two ends of a thin-film capacitor core;
step 2, placing the film capacitor core sleeved with the rubber ring in a core tank body and sealing the core tank body through a tank cover, wherein the shape of an inner cavity of the core tank body is consistent with the appearance of the film capacitor core, and the inner diameter of the inner cavity is larger than the outer diameter of the rubber ring;
step 3, vacuumizing the core tank body by using a vacuum pump;
step 4, placing one or more core tank bodies which are provided with thin-film capacitor cores and are vacuumized in an oven, wherein air is filled in the oven, and if the core tank bodies are multiple, the distance between the adjacent core tank bodies is not less than 5 mm;
step 5, setting a temperature rise program of the oven, starting the oven, and carrying out heat treatment according to a preset temperature;
and 6, after the heat treatment procedure of the oven is completed, closing the power supply of the oven, opening the door of the oven, taking out the core tank body, slowly releasing air into the core tank body, opening the core tank body after the air pressure in the core tank body is balanced with the atmospheric pressure, taking out the core of the film capacitor, removing the rubber ring, and completing the vacuum heat treatment of the core of the film capacitor.
2. The vacuum heat treatment method of the thin film capacitor element as claimed in claim 1, wherein: in the step 3, the vacuum degree of the core tank body after vacuumizing is-0.1 MPa.
3. The vacuum heat treatment method of the thin film capacitor element as claimed in claim 1 or 2, wherein: in the step 5, the temperature rise procedure of the oven is as follows: first-stage temperature rise: heating for 30min at room temperature to 85 ℃; and (3) second-stage heat preservation: keeping the temperature at 85 ℃ for 4 h; and (3) heating in the third stage: heating for 15min at 85-105 ℃; and (4) heat preservation in the fourth stage: keeping the temperature at 105 ℃ for 12 h; and (5) cooling in the fifth stage: 105-30 ℃ for 12 h.
4. The vacuum heat treatment method of the thin film capacitor element as claimed in claim 1 or 2, wherein: the core tank body is a metal tank body, and the inner wall of the core tank body is smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111200977.4A CN113643898B (en) | 2021-10-15 | 2021-10-15 | Vacuum heat treatment method for thin film capacitor core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111200977.4A CN113643898B (en) | 2021-10-15 | 2021-10-15 | Vacuum heat treatment method for thin film capacitor core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113643898A true CN113643898A (en) | 2021-11-12 |
| CN113643898B CN113643898B (en) | 2022-01-14 |
Family
ID=78427058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111200977.4A Active CN113643898B (en) | 2021-10-15 | 2021-10-15 | Vacuum heat treatment method for thin film capacitor core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113643898B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115410825A (en) * | 2022-09-20 | 2022-11-29 | 六和电子（江西）有限公司 | Thermal polymerization method and device for thin film capacitor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB362143A (en) * | 1929-11-27 | 1931-12-03 | Siemens Ag | Improved method of and means for evacuating and filling electric condensers with impregnating substances |
| GB378299A (en) * | 1931-06-09 | 1932-08-11 | Ericsson Telefon Ab L M | Improvements in drying electric condensers |
| CN102129910A (en) * | 2010-12-24 | 2011-07-20 | 珠海格力新元电子有限公司 | Process method for reducing noise of film capacitor |
| CN201904226U (en) * | 2010-12-20 | 2011-07-20 | 天津力神电池股份有限公司 | Novel drying system for super capacitors |
| KR101362810B1 (en) * | 2013-04-12 | 2014-02-14 | 남원식 | Thermal process apparatus |
| CN204927062U (en) * | 2015-07-13 | 2015-12-30 | 南通江森电子科技有限公司 | Metallized film thermal treatment system for condenser |
| CN107658132A (en) * | 2017-10-23 | 2018-02-02 | 安徽江威精密制造有限公司 | A kind of high-specific energy pulse capacitor element thermoforming process |
| CN108682557A (en) * | 2018-05-14 | 2018-10-19 | 浙江七星电容器有限公司 | new-energy capacitance heat treatment process |
| CN109545565A (en) * | 2018-11-06 | 2019-03-29 | 韶关东阳光电容器有限公司 | A kind of manufacturing method of solid-state aluminum electrolytic capacitor |
| CN111430157A (en) * | 2020-03-24 | 2020-07-17 | 中山市昦瑞真空科技有限公司 | Novel vacuum aging equipment for film capacitor and production process thereof |
-
2021
- 2021-10-15 CN CN202111200977.4A patent/CN113643898B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB362143A (en) * | 1929-11-27 | 1931-12-03 | Siemens Ag | Improved method of and means for evacuating and filling electric condensers with impregnating substances |
| GB378299A (en) * | 1931-06-09 | 1932-08-11 | Ericsson Telefon Ab L M | Improvements in drying electric condensers |
| CN201904226U (en) * | 2010-12-20 | 2011-07-20 | 天津力神电池股份有限公司 | Novel drying system for super capacitors |
| CN102129910A (en) * | 2010-12-24 | 2011-07-20 | 珠海格力新元电子有限公司 | Process method for reducing noise of film capacitor |
| KR101362810B1 (en) * | 2013-04-12 | 2014-02-14 | 남원식 | Thermal process apparatus |
| CN204927062U (en) * | 2015-07-13 | 2015-12-30 | 南通江森电子科技有限公司 | Metallized film thermal treatment system for condenser |
| CN107658132A (en) * | 2017-10-23 | 2018-02-02 | 安徽江威精密制造有限公司 | A kind of high-specific energy pulse capacitor element thermoforming process |
| CN108682557A (en) * | 2018-05-14 | 2018-10-19 | 浙江七星电容器有限公司 | new-energy capacitance heat treatment process |
| CN109545565A (en) * | 2018-11-06 | 2019-03-29 | 韶关东阳光电容器有限公司 | A kind of manufacturing method of solid-state aluminum electrolytic capacitor |
| CN111430157A (en) * | 2020-03-24 | 2020-07-17 | 中山市昦瑞真空科技有限公司 | Novel vacuum aging equipment for film capacitor and production process thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115410825A (en) * | 2022-09-20 | 2022-11-29 | 六和电子（江西）有限公司 | Thermal polymerization method and device for thin film capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113643898B (en) | 2022-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113643898B (en) | Vacuum heat treatment method for thin film capacitor core | |
| CN102074346B (en) | Drying process for high-voltage current transformer body | |
| CN201904226U (en) | Novel drying system for super capacitors | |
| CN108682895B (en) | Manufacturing process of lithium ion battery cell | |
| CN104882279A (en) | High specific volume aluminium electrolytic capacitor aging method | |
| CN111238168A (en) | Baking method for flexible package lithium battery cell | |
| CN109585170A (en) | A kind of heat-treatment technology method of metallic film capacitor fuse | |
| CN101746964A (en) | Titanium alloy and glass sealing process method | |
| CN111725579A (en) | Negative-pressure opening formation device for polymer soft-package lithium battery and battery core preparation process thereof | |
| CN213631198U (en) | Lithium battery vacuum oven | |
| CN109119695A (en) | A kind of big cylinder lithium-ion electric core baking method | |
| CN116613384B (en) | Metal shell lithium battery baking method | |
| CN205192214U (en) | Vacuum drying furnace | |
| CN109326828A (en) | The ameliorative way of negative electrode of lithium ion battery interface analysis lithium | |
| CN116914266A (en) | Lithium ion cylindrical battery assembling and open drying method | |
| CN114308948A (en) | Novel heating cleaning method and structure based on Suma tank | |
| CN106159334B (en) | Battery apparatus for baking and method | |
| CN103745840A (en) | Drying method and drying device for supercapacitor | |
| CN102082024B (en) | Vacuum treatment method of external-expander capacitive voltage transformer | |
| CN108598580B (en) | Method for forming battery in vacuum | |
| CN104061765B (en) | The vacuum oven that can be rapidly heated | |
| CN203631330U (en) | Supercapacitor drying device | |
| CN207945904U (en) | A kind of tunnel type drying device being placed in workpiece in vacuum box | |
| CN113251764A (en) | Microwave vacuum drying method and equipment for super capacitor battery core | |
| CN206558378U (en) | A kind of metallic film capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |