WO2019033463A1 - High voltage aluminum electrolytic capacitor resisting transient overvoltage impact and preparation method therefor - Google Patents

High voltage aluminum electrolytic capacitor resisting transient overvoltage impact and preparation method therefor Download PDF

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WO2019033463A1
WO2019033463A1 PCT/CN2017/099742 CN2017099742W WO2019033463A1 WO 2019033463 A1 WO2019033463 A1 WO 2019033463A1 CN 2017099742 W CN2017099742 W CN 2017099742W WO 2019033463 A1 WO2019033463 A1 WO 2019033463A1
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electrode foil
electrolytic capacitor
negative electrode
positive electrode
high voltage
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PCT/CN2017/099742
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French (fr)
Chinese (zh)
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何霄云
朱羽
杨波
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南通江海电容器股份有限公司
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Publication of WO2019033463A1 publication Critical patent/WO2019033463A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
    • H01G9/14—Structural combinations or circuits for modifying, or compensating for, electric characteristics of electrolytic capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
    • H01G9/022—Electrolytes; Absorbents
    • H01G9/035—Liquid electrolytes, e.g. impregnating materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
    • H01G9/07—Dielectric layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
    • H01G9/10—Sealing, e.g. of lead-in wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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

Definitions

  • the invention belongs to the field of aluminum electrolytic capacitors, and particularly relates to a transient high voltage resistant high voltage aluminum electrolytic capacitor and a preparation method thereof.
  • the technical problem to be solved by the present invention is to provide a transient high voltage resistant high voltage aluminum electrolytic capacitor and a preparation method thereof, which enhances the ability of resisting transient overvoltage with respect to ordinary aluminum electrolytic capacitors, and reduces the defect rate of the product market, which can satisfy India and Southeast Asia operate normally under unstable voltage conditions.
  • the invention provides a transient overvoltage surge high voltage aluminum electrolytic capacitor, comprising a casing, an inner casing, a sealing material, a positive electrode foil, a negative electrode foil and an electrolytic paper; the sealing material is filled into the inner casing to form a seal, wherein the inner casing
  • the positive electrode foil, the negative electrode foil and the electrolytic paper are disposed inside the inner casing to form a core package, and the positive electrode foil and the negative electrode foil are fixed on both sides of the electrolytic paper; the electrolytic paper is made of cotton.
  • the slurry composite paper is wound around a positive electrode foil and a negative electrode foil to form a core package.
  • the 40 ⁇ m paper in the electrolytic paper was selected from cotton pulp composite paper, and the ESR was reduced by 12% compared with the ordinary.
  • the positive electrode foil and the negative electrode foil are converted into an aluminum foil by low leakage current.
  • the V-I characteristics of the formed aluminum foil are very excellent The lower the leakage current of the product, the stronger the overvoltage resistance.
  • the method for preparing the low-leakage current into aluminum foil is as follows: the pre-treated aluminum foil is first-formed, second-staged, intermediate-treated, and three-staged, and finally cleaned and dried.
  • the positive electrode foil and the negative electrode foil are fixed to both sides of the electrolytic paper by riveting.
  • the positive electrode foil and the negative electrode foil are fixed to both sides of the electrolytic paper by cold press welding.
  • the invention also provides a preparation method of a transient high voltage resistant high voltage aluminum electrolytic capacitor, comprising:
  • the positive electrode foil and the negative electrode foil are fixed on both sides of the electrolytic paper, and are wound into a core package and then immersed in the inner casing containing the working electrolyte; the sealing material is filled into the inner casing for sealing; then the outer casing is placed in the inner casing, Finally, the high-voltage aluminum electrolytic capacitor with transient overvoltage resistance is obtained by aging; wherein the composition of the working electrolyte includes: by mass percentage, ethylene glycol: 44.5%-80.3%; auxiliary solvent: 5%-15%; solute: 8% ⁇ 15%; flash fire voltage booster: 0.5% - 2.5%; high temperature stabilizer: 6% - 10%; gas absorbent: 0.2% - 3%.
  • the anion concentration at the interface between the electrolyte and the aluminum foil oxide film can be significantly reduced, thereby increasing the discharge voltage of the anion.
  • the flash fire voltage boosting agent in the composition of the working electrolyte is particularly effective for meeting the 550 SV.
  • the anion concentration at the interface between the electrolyte and the aluminum foil oxide film can be significantly reduced, thereby increasing the discharge voltage of the anion, and therefore, no electricity is required in the capacitor aging and durability test process.
  • the problem that the liquid flash fire voltage is unstable and breakdown occurs.
  • the auxiliary solvent is one or two of diethylene glycol and glycerin.
  • the solute is ammonium pentaborate, ammonium sebacate, ammonium sebacate, ammonium 1,6-dodecanoate, ammonium 2-hexyl-adipate, ammonium 2,7-dibutyloctanoate Two or more.
  • the flash fire voltage boosting agent is polyvinyl alcohol (degree of polymerization 300 to 2400), ammonium polyacrylate, polyethylene glycol (degree of polymerization 400 to 30000), polyethylene oxide propylene oxide ether, SiO 2 nano-dispersion One or more of the agents and polyvinylpyrrolidone.
  • the high temperature stabilizer is one or more of phosphoric acid, ammonium phosphate, hypophosphorous acid, and ammonium hypophosphite.
  • the gas absorbent is one or more of p-nitrobenzyl alcohol, o-nitroanisole, p-nitrophenol, and m-nitroacetophenone.
  • the flashing voltage of the working electrolyte is ⁇ 510V.
  • the process parameters of the aging are voltages of 470V to 500V.
  • the invention enhances the ability of resisting transient over-voltage and reduces the defect rate of the product market, and can meet the normal operation under unstable voltage conditions in India and Southeast Asia; the surge voltage satisfies 550V, and the transient over-voltage meets 620V ( 1 minute); the preparation process is simple, the cost is low, and has a good application prospect.
  • FIG. 1 is a schematic structural view of an aluminum electrolytic capacitor of the present invention
  • the embodiment provides a transient high voltage resistant high voltage aluminum electrolytic capacitor, comprising a casing 1, an inner casing 2, a sealing material 3, a positive electrode foil 4, a negative electrode foil 5, and an electrolytic paper 6;
  • the sealing material 3 is filled into the inner casing 2 to form a seal, and the inner casing 2 is assembled with the outer casing 1.
  • the positive electrode foil 4, the negative electrode foil 5 and the electrolytic paper 6 are disposed inside the inner casing 2 to form a core package.
  • the positive electrode foil 4 and the negative electrode foil 5 are riveted to both sides of the electrolytic paper 6; the electrolytic paper 6 is wound with a cotton composite paper and the positive electrode foil 4 and the negative electrode foil 5 are formed into a core package. (Please verify this description, whether the capacitor has other structural improvements can be added)
  • the positive electrode foil 4 and the negative electrode foil 5 are converted into an aluminum foil by low leakage current.
  • the method for preparing the low-leakage current into aluminum foil is as follows: the pre-treated aluminum foil is first-formed, second-staged, intermediate-treated, and three-staged, and finally cleaned and dried.
  • Preparation methods include:
  • the positive electrode foil 4 and the negative electrode foil 5 are fixed on both sides of the electrolytic paper 6, and are wound to form a core package and then immersed in the inner casing 2 containing the working electrolyte; the sealing material 3 is placed in the inner casing 2 for sealing; The outer casing 1 is placed in the inner casing 2, and finally subjected to aging to obtain a transient high voltage resistant high voltage aluminum electrolytic capacitor; wherein, the working electrolyte composition comprises: by mass percentage, ethylene glycol: 70%; diethylene glycol: 10%; Ammonium borate: 8%; polyvinyl alcohol: 2%; phosphoric acid: 8%; p-nitrobenzyl alcohol: 2%.
  • the flash voltage of the working electrolyte is ⁇ 510V. Generally, the highest aging voltage is 500V.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

A high voltage aluminum electrolytic capacitor resisting transient overvoltage impact and a preparation method therefor. The structure comprises an outer housing (1), an inner housing (2), a sealing material (3), a positive electrode foil piece (4), a negative electrode foil piece (5) and an electrolytic paper (6); the sealing material (3) is provided in the inner housing (2) for sealing; the inner housing (2) and the outer housing (1) are provided in a fitted manner; the positive electrode foil piece (4), the negative electrode foil piece (5) and the electrolytic paper (6) are provided in the inner housing (2) so as to form a core; the positive electrode foil piece (4) and the negative electrode foil piece (5) are fixed on either side of the electrolytic paper (6); the electrolytic paper (6) uses cotton pulp composite paper to wind the positive electrode foil piece (4) and the negative electrode foil piece (5) so as to form the core. Compared with a common aluminum electrolytic capacitor, the transient overvoltage resistance is enhanced; market reject ratio of the product is reduced; requirements for normal operation in conditions with unstable voltage in Indian and Southeast Asian markets can be met.

Description

一种耐瞬间过电压冲击高压铝电解电容器及其制备方法Instantaneous overvoltage surge high voltage aluminum electrolytic capacitor and preparation method thereof 技术领域Technical field
本发明属于铝电解电容器领域，特别涉及一种耐瞬间过电压冲击高压铝电解电容器及其制备方法。The invention belongs to the field of aluminum electrolytic capacitors, and particularly relates to a transient high voltage resistant high voltage aluminum electrolytic capacitor and a preparation method thereof.
背景技术Background technique
对于变频空调产品应用，过去存在一个误区，总认为空调使用季节性强，时间短，加上成本压力大，因此，在过去选型时一般会选择85℃普通品、400V普通品、450V普通品等。For the application of inverter air conditioner products, there is a misunderstanding in the past. It is believed that air conditioners use seasonality, short time, and high cost pressure. Therefore, in the past, 85°C common products, 400V ordinary products and 450V ordinary products were generally selected. Wait.
其实，针对空调应用，首先要充分考虑到使用环境最恶劣的条件，如：In fact, for air conditioning applications, we must first fully consider the worst conditions of the use of the environment, such as:
(1)安装在南面阳台，夏天长时间太阳暴晒，导致产品环境温度就比较高；(1) Installed on the south balcony, the sun is exposed for a long time in the summer, resulting in a higher ambient temperature of the product;
(2)对于一些偏远地区，由于电网电压波动比较大，出现过电压或过电流，就会导致产品内部严重发热；最终导致大电容器失效；(2) For some remote areas, due to the large fluctuation of the grid voltage, overvoltage or overcurrent will cause severe internal heat generation; eventually, the large capacitor will fail;
(3)如果周边大气污染比较恶劣，如长期存在一些含卤素的气体，也会严重影响电容器的使用寿命；(3) If the surrounding air pollution is relatively bad, such as the long-term existence of some halogen-containing gases, it will seriously affect the service life of the capacitor;
(4)现在许多家庭条件优越，冬天、夏天空调开机时间很长，已经超越过去的设计设想。(4) Many families now have excellent conditions. The air-conditioning start-up time in winter and summer is very long and has surpassed the previous design ideas.
因此，有必要开发一种新的铝电解电容器适应空调使用的新需求。Therefore, it is necessary to develop a new aluminum electrolytic capacitor to meet the new needs of air conditioning use.
发明内容Summary of the invention
本发明所要解决的技术问题是提供一种耐瞬间过电压冲击高压铝电解电容器及其制备方法，该电容器相对于普通铝电解电容器增强了耐瞬间过电压的能力，降低产品市场不良率，可以满足印度、东南亚市场电压不稳定条件下正常运行。The technical problem to be solved by the present invention is to provide a transient high voltage resistant high voltage aluminum electrolytic capacitor and a preparation method thereof, which enhances the ability of resisting transient overvoltage with respect to ordinary aluminum electrolytic capacitors, and reduces the defect rate of the product market, which can satisfy India and Southeast Asia operate normally under unstable voltage conditions.
本发明提供了一种耐瞬间过电压冲击高压铝电解电容器，包括外壳、内壳、封口材料、正极箔片、负极箔片和电解纸；所述封口材料装入内壳形成密封，所述内壳与外壳配套装配，所述正极箔片、负极箔片和电解纸设置于内壳内部形成芯包，所述正极箔片、负极箔片固定于电解纸的两侧；所述电解纸采用棉浆复合纸卷绕正极箔片、负极箔片形成芯包。The invention provides a transient overvoltage surge high voltage aluminum electrolytic capacitor, comprising a casing, an inner casing, a sealing material, a positive electrode foil, a negative electrode foil and an electrolytic paper; the sealing material is filled into the inner casing to form a seal, wherein the inner casing The positive electrode foil, the negative electrode foil and the electrolytic paper are disposed inside the inner casing to form a core package, and the positive electrode foil and the negative electrode foil are fixed on both sides of the electrolytic paper; the electrolytic paper is made of cotton. The slurry composite paper is wound around a positive electrode foil and a negative electrode foil to form a core package.
所述电解纸中的40μm纸选用棉浆复合纸，ESR比普通降低12％。The 40 μm paper in the electrolytic paper was selected from cotton pulp composite paper, and the ESR was reduced by 12% compared with the ordinary.
所述正极箔片和负极箔片为低漏电流化成铝箔。该化成铝箔的V-I特性非常优 越，产品漏电流小，耐过电压能力强。The positive electrode foil and the negative electrode foil are converted into an aluminum foil by low leakage current. The V-I characteristics of the formed aluminum foil are very excellent The lower the leakage current of the product, the stronger the overvoltage resistance.
所述低漏电流化成铝箔的制作方法为：将经过前处理的铝箔经一级化成、二级化成、中间处理、三级化成，最后清洗干燥，即得。The method for preparing the low-leakage current into aluminum foil is as follows: the pre-treated aluminum foil is first-formed, second-staged, intermediate-treated, and three-staged, and finally cleaned and dried.
所述正极箔片和负极箔片通过铆接固定于电解纸的两侧。The positive electrode foil and the negative electrode foil are fixed to both sides of the electrolytic paper by riveting.
所述正极箔片和负极箔片通过冷压焊接固定于电解纸的两侧。The positive electrode foil and the negative electrode foil are fixed to both sides of the electrolytic paper by cold press welding.
本发明还提供了一种耐瞬间过电压冲击高压铝电解电容器的制备方法，包括：The invention also provides a preparation method of a transient high voltage resistant high voltage aluminum electrolytic capacitor, comprising:
取正极箔片和负极箔片固定于电解纸的两侧，卷绕形成芯包后浸渍于含工作电解液的内壳中；将封口材料装入内壳进行密封；然后将外壳套入内壳，最后经老化得到耐瞬间过电压冲击高压铝电解电容器；其中，工作电解液的组成包括：按质量百分比，乙二醇：44.5％-80.3％；辅助溶剂：5％～15％；溶质：8％～15％；闪火电压提升剂：0.5％-2.5％；高温稳定剂：6％-10％；气体吸收剂：0.2％-3％。电解液添加了这些添加剂后，能明显减少电解液与铝箔氧化膜界面的阴离子浓度，从而提高阴离子的放电电压。The positive electrode foil and the negative electrode foil are fixed on both sides of the electrolytic paper, and are wound into a core package and then immersed in the inner casing containing the working electrolyte; the sealing material is filled into the inner casing for sealing; then the outer casing is placed in the inner casing, Finally, the high-voltage aluminum electrolytic capacitor with transient overvoltage resistance is obtained by aging; wherein the composition of the working electrolyte includes: by mass percentage, ethylene glycol: 44.5%-80.3%; auxiliary solvent: 5%-15%; solute: 8% ~ 15%; flash fire voltage booster: 0.5% - 2.5%; high temperature stabilizer: 6% - 10%; gas absorbent: 0.2% - 3%. When these additives are added to the electrolyte, the anion concentration at the interface between the electrolyte and the aluminum foil oxide film can be significantly reduced, thereby increasing the discharge voltage of the anion.
所述工作电解液的组成中闪火电压提升剂对满足550SV的作用尤其明显。在这种电解液添加了闪火电压提升剂后，能明显减少电解液与铝箔氧化膜界面的阴离子浓度，从而提高阴离子的放电电压，因此，无论在电容器老化和耐久性试验过程都没有因为电解液闪火电压不稳定而发生击穿的问题。The flash fire voltage boosting agent in the composition of the working electrolyte is particularly effective for meeting the 550 SV. After the flash voltage boosting agent is added to the electrolyte, the anion concentration at the interface between the electrolyte and the aluminum foil oxide film can be significantly reduced, thereby increasing the discharge voltage of the anion, and therefore, no electricity is required in the capacitor aging and durability test process. The problem that the liquid flash fire voltage is unstable and breakdown occurs.
所述辅助溶剂为二甘醇、丙三醇中的一种或两种。The auxiliary solvent is one or two of diethylene glycol and glycerin.
所述溶质为五硼酸铵、壬二酸铵、癸二酸铵、1，6-十二双酸铵、2-己基-己二酸铵、2，7-二丁基辛二酸铵中的两种或者几种。The solute is ammonium pentaborate, ammonium sebacate, ammonium sebacate, ammonium 1,6-dodecanoate, ammonium 2-hexyl-adipate, ammonium 2,7-dibutyloctanoate Two or more.
所述闪火电压提升剂为聚乙烯醇(聚合度300～2400)、聚丙烯酸铵、聚乙二醇(聚合度400～30000)、聚环氧乙烷环氧丙烷醚、SiO2纳米级分散剂、聚乙烯吡咯烷酮中的一种或几种。The flash fire voltage boosting agent is polyvinyl alcohol (degree of polymerization 300 to 2400), ammonium polyacrylate, polyethylene glycol (degree of polymerization 400 to 30000), polyethylene oxide propylene oxide ether, SiO 2 nano-dispersion One or more of the agents and polyvinylpyrrolidone.
所述高温稳定剂为磷酸、磷酸铵盐、次亚磷酸、次亚磷酸铵中的一种或几种。The high temperature stabilizer is one or more of phosphoric acid, ammonium phosphate, hypophosphorous acid, and ammonium hypophosphite.
所述气体吸收剂为对硝基苯甲醇、邻硝基茴香醚、对硝基苯酚、间硝基苯乙酮中的一种或者几种。The gas absorbent is one or more of p-nitrobenzyl alcohol, o-nitroanisole, p-nitrophenol, and m-nitroacetophenone.
所述工作电解液的闪火电压≥510V。The flashing voltage of the working electrolyte is ≥ 510V.
所述老化的工艺参数为电压470V～500V。 The process parameters of the aging are voltages of 470V to 500V.
有益效果Beneficial effect
本发明相对于普通铝电解电容器增强了耐瞬间过电压的能力，降低产品市场不良率，可以满足印度、东南亚市场电压不稳定条件下正常运行；浪涌电压满足550V，耐瞬间过电压满足620V(1分钟)；制备工艺简单，成本低，具有良好的应用前景。Compared with ordinary aluminum electrolytic capacitors, the invention enhances the ability of resisting transient over-voltage and reduces the defect rate of the product market, and can meet the normal operation under unstable voltage conditions in India and Southeast Asia; the surge voltage satisfies 550V, and the transient over-voltage meets 620V ( 1 minute); the preparation process is simple, the cost is low, and has a good application prospect.
附图说明DRAWINGS
图1为本发明铝电解电容器的结构示意图；1 is a schematic structural view of an aluminum electrolytic capacitor of the present invention;
图2为本发明铝电解电容器的Spike测试方法。2 is a Spike test method for an aluminum electrolytic capacitor of the present invention.
具体实施方式Detailed ways
下面结合具体实施例，进一步阐述本发明。应理解，这些实施例仅用于说明本发明而不用于限制本发明的范围。此外应理解，在阅读了本发明讲授的内容之后，本领域技术人员可以对本发明作各种改动或修改，这些等价形式同样落于本申请所附权利要求书所限定的范围。The invention is further illustrated below in conjunction with specific embodiments. It is to be understood that the examples are not intended to limit the scope of the invention. In addition, it should be understood that various changes and modifications may be made by those skilled in the art in the form of the present invention.
实施例1Example 1
如图1所示，本实施例提供了一种耐瞬间过电压冲击高压铝电解电容器，包括外壳1、内壳2、封口材料3、正极箔片4、负极箔片5和电解纸6；所述封口材料3装入内壳2形成密封，所述内壳2与外壳1配套装配，所述正极箔片4、负极箔片5和电解纸6设置于内壳2内部形成芯包，所述正极箔片4、负极箔片5铆接于电解纸6的两侧；所述电解纸6采用棉浆复合纸卷绕正极箔片4、负极箔片5形成芯包。(请核实此描述，电容器是否有其他结构上的改进可补充)As shown in FIG. 1, the embodiment provides a transient high voltage resistant high voltage aluminum electrolytic capacitor, comprising a casing 1, an inner casing 2, a sealing material 3, a positive electrode foil 4, a negative electrode foil 5, and an electrolytic paper 6; The sealing material 3 is filled into the inner casing 2 to form a seal, and the inner casing 2 is assembled with the outer casing 1. The positive electrode foil 4, the negative electrode foil 5 and the electrolytic paper 6 are disposed inside the inner casing 2 to form a core package. The positive electrode foil 4 and the negative electrode foil 5 are riveted to both sides of the electrolytic paper 6; the electrolytic paper 6 is wound with a cotton composite paper and the positive electrode foil 4 and the negative electrode foil 5 are formed into a core package. (Please verify this description, whether the capacitor has other structural improvements can be added)
所述正极箔片4和负极箔片5为低漏电流化成铝箔。The positive electrode foil 4 and the negative electrode foil 5 are converted into an aluminum foil by low leakage current.
所述低漏电流化成铝箔的制作方法为：将经过前处理的铝箔经一级化成、二级化成、中间处理、三级化成，最后清洗干燥，即得。The method for preparing the low-leakage current into aluminum foil is as follows: the pre-treated aluminum foil is first-formed, second-staged, intermediate-treated, and three-staged, and finally cleaned and dried.
制备方法包括：Preparation methods include:
取正极箔片4和负极箔片5固定于电解纸6的两侧，卷绕形成芯包后浸渍于含工作电解液的内壳2中；将封口材料3装入内壳2进行密封；然后将外壳1套入内壳2，最后经老化得到耐瞬间过电压冲击高压铝电解电容器；其中，工作电解液的组成包括：按质量百分比，乙二醇：70％；二甘醇：10％；五硼酸铵：8％；聚乙烯醇：2％；磷酸：8％；对硝基苯甲醇：2％。 The positive electrode foil 4 and the negative electrode foil 5 are fixed on both sides of the electrolytic paper 6, and are wound to form a core package and then immersed in the inner casing 2 containing the working electrolyte; the sealing material 3 is placed in the inner casing 2 for sealing; The outer casing 1 is placed in the inner casing 2, and finally subjected to aging to obtain a transient high voltage resistant high voltage aluminum electrolytic capacitor; wherein, the working electrolyte composition comprises: by mass percentage, ethylene glycol: 70%; diethylene glycol: 10%; Ammonium borate: 8%; polyvinyl alcohol: 2%; phosphoric acid: 8%; p-nitrobenzyl alcohol: 2%.
工作电解液的闪火电压≥510V。一般最高老化电压为500V。The flash voltage of the working electrolyte is ≥ 510V. Generally, the highest aging voltage is 500V.
本实施例的铝电解电容器的性能测试结果如下：The performance test results of the aluminum electrolytic capacitor of this embodiment are as follows:
Figure PCTCN2017099742-appb-000001
Figure PCTCN2017099742-appb-000001
由上表可见，本实施例的产品性能突出，而且完全满足SPIKE测试，可以保证市场不良率小于10PPM。 It can be seen from the above table that the product performance of the embodiment is outstanding, and the SPIKE test is fully satisfied, and the market defect rate can be guaranteed to be less than 10 PPM.

Claims (9)

  1. 一种耐瞬间过电压冲击高压铝电解电容器，包括外壳(1)、内壳(2)、封口材料(3)、正极箔片(4)、负极箔片(5)和电解纸(6)；所述封口材料(3)装入内壳(2)形成密封，所述内壳(2)与外壳(1)配套装配，所述正极箔片(4)、负极箔片(5)和电解纸(6)设置于内壳(2)内部形成芯包，所述正极箔片(4)、负极箔片(5)固定于电解纸(6)的两侧；其特征在于：所述电解纸(6)采用棉浆复合纸卷绕正极箔片(4)、负极箔片(5)形成芯包。A high-voltage aluminum electrolytic capacitor resistant to transient over-voltage surge, comprising a casing (1), an inner casing (2), a sealing material (3), a positive electrode foil (4), a negative electrode foil (5) and an electrolytic paper (6); The sealing material (3) is filled into the inner casing (2) to form a seal, and the inner casing (2) is assembled with the outer casing (1), the positive electrode foil (4), the negative electrode foil (5) and the electrolytic paper. (6) forming a core package inside the inner casing (2), the positive electrode foil (4) and the negative electrode foil (5) being fixed on both sides of the electrolytic paper (6); characterized in that the electrolytic paper ( 6) The positive electrode foil (4) and the negative electrode foil (5) are wound by a cotton pulp composite paper to form a core package.
  2. 根据权利要求1所述的一种耐瞬间过电压冲击高压铝电解电容器，其特征在于：所述正极箔片(4)和负极箔片(5)为低漏电流化成铝箔。The transient overvoltage surge high voltage aluminum electrolytic capacitor according to claim 1, wherein the positive electrode foil (4) and the negative electrode foil (5) are low leakage current and formed into an aluminum foil.
  3. 根据权利要求2所述的一种耐瞬间过电压冲击高压铝电解电容器，其特征在于：所述低漏电流化成铝箔的制作方法为：将经过前处理的铝箔经一级化成、二级化成、中间处理、三级化成，最后清洗干燥，即得。The transient overvoltage surge high voltage aluminum electrolytic capacitor according to claim 2, wherein the low leakage current is formed into an aluminum foil by first-stage forming and second-level forming the pretreated aluminum foil. Intermediate treatment, three-stage formation, and finally cleaning and drying, that is.
  4. 根据权利要求1所述的一种耐瞬间过电压冲击高压铝电解电容器，其特征在于：所述正极箔片(4)和负极箔片(5)通过铆接固定于电解纸(6)的两侧。The transient overvoltage surge high voltage aluminum electrolytic capacitor according to claim 1, wherein the positive electrode foil (4) and the negative electrode foil (5) are fixed to both sides of the electrolytic paper (6) by riveting. .
  5. 根据权利要求1所述的一种耐瞬间过电压冲击高压铝电解电容器，其特征在于：所述正极箔片(4)和负极箔片(5)通过冷压焊接固定于电解纸(6)的两侧。The transient overvoltage surge high voltage aluminum electrolytic capacitor according to claim 1, wherein the positive electrode foil (4) and the negative electrode foil (5) are fixed to the electrolytic paper (6) by cold press welding. On both sides.
  6. 一种耐瞬间过电压冲击高压铝电解电容器的制备方法，包括：A method for preparing a transient high voltage resistant high voltage aluminum electrolytic capacitor, comprising:
    取正极箔片(4)和负极箔片(5)固定于电解纸(6)的两侧，卷绕形成芯包后浸渍于含工作电解液的内壳(2)中；将封口材料(3)装入内壳(2)进行密封；然后将外壳(1)套入内壳(2)，最后经老化得到耐瞬间过电压冲击高压铝电解电容器；其中，工作电解液的组成包括：按质量百分比，乙二醇：44.5％-80.3％；辅助溶剂：5％～15％；溶质：8％～15％；闪火电压提升剂：0.5％-2.5％；高温稳定剂：6％-10％；气体吸收剂：0.2％-3％。The positive electrode foil (4) and the negative electrode foil (5) are fixed on both sides of the electrolytic paper (6), and are wound into a core package and then immersed in the inner casing (2) containing the working electrolyte; the sealing material (3) Loading the inner casing (2) for sealing; then inserting the outer casing (1) into the inner casing (2), and finally aging to obtain a transient high-voltage-resistant high-voltage aluminum electrolytic capacitor; wherein, the working electrolyte composition includes: by mass percentage , ethylene glycol: 44.5%-80.3%; auxiliary solvent: 5% ~ 15%; solute: 8% ~ 15%; flash fire voltage booster: 0.5% - 2.5%; high temperature stabilizer: 6% - 10%; Gas absorbent: 0.2%-3%.
  7. 根据权利要求6所述的一种耐瞬间过电压冲击高压铝电解电容器的制备方法，其特征在于：所述辅助溶剂为二甘醇、丙三醇中的一种或两种；溶质为五硼酸铵、壬二酸铵、癸二酸铵、1，6-十二双酸铵、2-己基-己二酸铵、2，7-二丁基辛二酸铵中的两种或者几种；闪火电压提升剂为聚乙烯醇、聚丙烯酸铵、聚乙二醇、聚环氧乙烷环氧丙烷醚、SiO2纳米级分散剂、聚乙烯吡咯烷酮中的一种或几种；高温稳定剂为磷酸、磷酸铵盐、次亚磷酸、次亚磷酸铵中的一种或几种；气体吸收剂为对硝基苯甲醇、邻硝基茴香醚、对硝基苯酚、间硝基苯乙酮中的一种或者几种。The method for preparing a transient overvoltage surge high voltage aluminum electrolytic capacitor according to claim 6, wherein the auxiliary solvent is one or two of diethylene glycol and glycerin; and the solute is pentaborate Two or more of ammonium, ammonium sebacate, ammonium sebacate, ammonium 1,6-dodecanoate, ammonium 2-hexyl-adipate, ammonium 2,7-dibutyloctanoate; The flash fire voltage boosting agent is one or more of polyvinyl alcohol, ammonium polyacrylate, polyethylene glycol, polyethylene oxide propylene oxide ether, SiO2 nano-dispersant, polyvinylpyrrolidone; One or more of phosphoric acid, ammonium phosphate, hypophosphorous acid, ammonium hypophosphite; gas absorbent is p-nitrobenzyl alcohol, o-nitroanisole, p-nitrophenol, m-nitroacetophenone One or several.
  8. 根据权利要求6所述的一种耐瞬间过电压冲击高压铝电解电容器的制备方法，其特征在于：所述工作电解液的闪火电压≥510V。The method for preparing a transient overvoltage surge high voltage aluminum electrolytic capacitor according to claim 6, wherein the working electrolyte has a flash voltage of ≥ 510V.
  9. 根据权利要求6所述的一种耐瞬间过电压冲击高压铝电解电容器的制备方法，其特征在于：所述老化的工艺参数为电压470V～500V。 The method for preparing a transient overvoltage surge high voltage aluminum electrolytic capacitor according to claim 6, wherein the aging process parameter is a voltage of 470V to 500V.
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