WO2010133079A1 - 具有安全保护技术的自愈式电容器 - Google Patents

具有安全保护技术的自愈式电容器 Download PDF

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Publication number
WO2010133079A1
WO2010133079A1 PCT/CN2010/000342 CN2010000342W WO2010133079A1 WO 2010133079 A1 WO2010133079 A1 WO 2010133079A1 CN 2010000342 W CN2010000342 W CN 2010000342W WO 2010133079 A1 WO2010133079 A1 WO 2010133079A1
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WO
WIPO (PCT)
Prior art keywords
capacitor
electrical contact
electrically connected
capacitor core
self
Prior art date
Application number
PCT/CN2010/000342
Other languages
English (en)
French (fr)
Inventor
刘国光
Original Assignee
Liu Guoguang
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Liu Guoguang filed Critical Liu Guoguang
Priority to EP10777283.2A priority Critical patent/EP2434506B1/en
Publication of WO2010133079A1 publication Critical patent/WO2010133079A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/14—Protection against electric or thermal overload
    • H01G2/16—Protection against electric or thermal overload with fusing elements
    • 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
    • H01G4/002—Details
    • H01G4/005—Electrodes
    • H01G4/015—Special provisions for self-healing
    • 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
    • H01G4/002—Details
    • H01G4/018—Dielectrics
    • H01G4/06—Solid dielectrics
    • H01G4/14—Organic dielectrics
    • H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose
    • 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
    • H01G4/002—Details
    • H01G4/224—Housing; Encapsulation
    • 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
    • H01G4/002—Details
    • H01G4/228—Terminals
    • H01G4/236—Terminals leading through the housing, i.e. lead-through
    • 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
    • H01G4/32—Wound capacitors

Definitions

  • the present invention relates to the technical field of capacitors, and more particularly to self-healing capacitors having safety protection techniques. Background technique
  • Capacitor products are widely used, but many existing capacitors have roughly the same structure, that is, there is no protection against excessive fault current, as discussed below:
  • the capacitor product is assembled by metallized polypropylene film, flame retardant or non-flame retardant epoxy resin, flame retardant or non-flame retardant plastic and metal casing, and lead terminal assembly.
  • no protection device said P0 has no special fault protection capacitor; this product has no safety protection device, it has not adapted to the environment of production, safety and environment with safety, environmental protection and green theme.
  • the capacitor product is made of a metallized polypropylene film, a flame retardant epoxy resin or a non-flame retardant epoxy resin, a flame retardant or non-flame retardant plastic and a metal casing.
  • the lead terminals are assembled and have no protection device. It is also called P0 without special fault protection capacitors.
  • This product is not suitable for a safe, green and themed production and living environment because it has no safety protection devices.
  • the safety film capacitor product is assembled by a special textured or diamond-shaped metallized polypropylene film, a flame-retardant epoxy resin, a flame-retardant plastic casing, a metal casing, and a lead terminal.
  • Its protection feature is that when the polypropylene film is vapor-deposited, the metal is vapor-deposited into independent and standard metal small squares, and the small squares are vapor-deposited into small metal strips to connect the small metal squares, and the small metal is connected.
  • the strip acts the same as the fuse. It is called P2 protection grade capacitor.
  • the safety film has a complicated process and high cost in vapor deposition of the metal layer, and the small metal strip is easily broken when the capacitor is normally self-healing, and the capacity loss is large.
  • the safety film is safe as the name suggests, but the film utilization rate of the safety film is very unsatisfactory.
  • the capacitor is made with the safety film, which is usually used for the utilization of the capacitor film. 85%, the cost of raw materials and auxiliary materials and processing increased, so it is difficult for general supporting factories to accept the above-mentioned explosion-proof capacitors made of safety film.
  • the capacitor product is assembled from a capacitor-related component such as a metallized polypropylene film, a salad oil or a castor oil, a metal casing, and a lead terminal.
  • a capacitor-related component such as a metallized polypropylene film, a salad oil or a castor oil, a metal casing, and a lead terminal.
  • the small square iron and composite wire link constitute a riot device, which is called P1 protection class capacitor.
  • the product has certain guarantees for safety, the original cost of the capacitor, the cost of the auxiliary material and the production cost are high.
  • the capacitor product is made of a metallized polypropylene film, a flame retardant or non-flame retardant epoxy resin, a flame-retardant or non-flame-retardant plastic case, a metal case,
  • the terminal, resistor and temperature fuse are assembled, which is called the temperature protector lamp capacitor.
  • the capacitor is protected by a temperature protector, and the raw material cost and manufacturing cost are low.
  • the capacitor is considered to be a protective device.
  • the temperature protector is protected by temperature, that is, the temperature protector is protected when the internal temperature of the capacitor exceeds the temperature rating of the temperature protector, and the temperature protector is placed in the outer casing of the capacitor. It is difficult to find a position. When the capacitor is about to burst, it does not necessarily correspond to the position where the thermal protector is placed. Although it is economical, it is difficult to protect. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a self-healing capacitor with a safety protection technology, such as low manufacturing cost, simple process, convenient operation, quick action response, fast protection speed, energy saving and environmental protection, in view of the current state of the art.
  • a self-healing capacitor with safety protection technology comprising a shell body made of flame-retardant plastic or metal, characterized in that: a capacitor core body obtained by winding a metalized polypropylene film, and a flame-retardant epoxy resin body is filled between the capacitor core body and the body cavity of the shell body; the first electric contact is formed corresponding to the upper and lower ends of the capacitor core body And a second electrical contact, the second electrical contact is electrically connected to the current fuse, and the current fuse is electrically connected to the second lead end line; correspondingly, the first electrical contact is electrically connected to the first lead end line.
  • the capacitor core body is a hollow cylinder, wherein the upper end of the left semi-cylindrical cylinder has a first electrical contact; the lower end of the right semi-cylinder has a second electrical contact; the current fuse is located in the hollow cavity of the capacitor core body. in.
  • the upper portion of the inner body cavity of the shell body is also fitted with a first cover body, and the first lead end line and the second lead end line penetrate the first cover body.
  • the first electrical contact is electrically connected to the discharge resistor, and the other pole of the discharge resistor is electrically connected to the second electrical contact; the upper portion of the body cavity is also fitted with a second cover.
  • the first lead end line and the second lead end line extend through the second cover.
  • the above-mentioned capacitor core body undergoes severe self-healing discharge during operation or at the moment of thermal breakdown. Due to the instantaneous inrush current, the current fuse is immediately blown to cut off the power supply loop of the capacitor core.
  • the body cavity seal of the present invention is embedded with a capacitor core wound by a metallized polypropylene film, and the capacitor core body is filled with the body cavity of the shell body.
  • a flame-retardant epoxy resin body the upper and lower ends of the capacitor core body are correspondingly provided with a first electrical contact and a second electrical contact, the second electrical contact is electrically connected with a current fuse, and the current fuse is electrically connected with a second lead
  • the end line; correspondingly, the first electrical contact is electrically connected to the first lead end line. It is protected by a micro-structured current fuse.
  • the current fuse is precisely matched to the capacitive current. The current fuse can keep working normally during product testing and normal operation.
  • the capacitor core has a serious self-healing discharge during operation. Or at the moment of thermal breakdown, due to the instantaneous inrush current, the current fuse will immediately melt and cut off the power supply loop of the capacitor core. In order to avoid the occurrence of product explosions and accidents due to the increase of the fault point; no malfunction occurs due to temperature changes during operation, and the insulation is destroyed only when the internal fault occurs in the product, and the current increases when the current increases. Protective effects.
  • Figure 1 is a longitudinal cross-sectional view of the prior art 1
  • Figure la is a left side view of Figure 1;
  • Figure 2 is a longitudinal cross-sectional view showing the first embodiment of the present invention
  • Figure 2a is a left side view of Figure 2;
  • Figure 3 is a longitudinal cross-sectional view of the prior art 2
  • Figure 3a is a top plan view of Figure 3;
  • Figure 4 is a longitudinal cross-sectional view showing the second embodiment of the present invention.
  • Figure 4a is a top plan view of Figure 4.
  • Figure 5 is a longitudinal cross-sectional view of the prior art 3.
  • Figure 6 is a longitudinal cross-sectional view of the prior art 4.
  • Figure 7 is a longitudinal cross-sectional view of the prior art 5.
  • Figure 7a is a top plan view of Figure 7;
  • Figure 8 is a longitudinal cross-sectional view showing the third embodiment of the present invention.
  • Figure 8a is a top plan view of Figure 8.
  • Figure 9 is a longitudinal cross-sectional view of the prior art 6
  • Figure 9a is a top plan view of Figure 9;
  • Figure 10 is a longitudinal cross-sectional view showing the fourth embodiment of the present invention.
  • Figure 10a is a top plan view of Figure 10.
  • the icon numbers are as follows: shell body 1, first terminal line 21, second terminal line 22, capacitor core 3, first electrical contact 31, second electrical contact 32, left The semi-cylindrical cylinder 33, the right semi-cylindrical body 34, the current fuse 4, the flame-retardant epoxy resin body 5, the first cover body 61, the second cover body 62, and the discharge resistor 7.
  • the self-healing capacitor with safety protection technology comprises a shell body 1 made of flame-retardant plastic or metal, wherein: the inner cavity of the shell body 1 is sealed.
  • the capacitor core 3 is formed by winding a metallized polypropylene film, and the flame-retardant epoxy body 5 is filled between the capacitor core 3 and the inner cavity of the shell body 1;
  • the first end of the second electrical contact 32 is electrically connected to the current fuse 4, and the current fuse 4 is electrically connected to the second lead end line 22; correspondingly, the first An electrical contact 31 is electrically connected to the first terminal line 21.
  • the self-healing capacitor with safety protection technology comprises a shell body 1 made of flame-retardant plastic or metal, wherein: the inner cavity of the shell body 1 is sealed.
  • the capacitor core 3 is formed by winding a metallized polypropylene film, and the flame-retardant epoxy body 5 is filled between the capacitor core 3 and the inner cavity of the shell body 1; The end corresponding to the first electrical contact 31 and the second electrical contact 32, the second The electrical contact 32 is electrically connected to the current fuse 4, and the current fuse 4 is electrically connected to the second terminal line 22; correspondingly, the first electrical contact 31 is electrically connected to the first terminal line 21.
  • the capacitor core 3 is a hollow cylinder, wherein the upper end of the left semi-cylindrical cylinder 33 has a first electrical contact 31; the lower half of the right semi-cylinder 34 has a second electrical contact 32; the current fuse 4 is located in the hollow of the capacitor core 3 In the inner cavity.
  • the upper portion of the inner cavity of the shell body 1 of the present embodiment is further provided with a first cover 61, A lead end line 21 and a second lead end line 22 extend through the first cover 61.
  • the self-healing capacitor with safety protection technology comprises a shell body 1 made of flame-retardant plastic or metal, wherein: the inner cavity of the shell body 1 is sealed.
  • the capacitor core 3 is formed by winding a metallized polypropylene film, and the flame-retardant epoxy body 5 is filled between the capacitor core 3 and the inner cavity of the shell body 1;
  • the first end of the second electrical contact 32 is electrically connected to the current fuse 4, and the current fuse 4 is electrically connected to the second lead end line 22; correspondingly, the first An electrical contact 31 is electrically connected to the first terminal line 21.
  • a discharge resistor 7 is electrically connected to the first electrical contact 31, and the other pole of the discharge resistor 7 is electrically connected to the second electrical contact 32.
  • the upper portion of the inner cavity of the shell body 1 is also fitted with a second cover. 62.
  • the first lead end line 21 and the second lead end line 22 penetrate the second cover body 62.
  • the invention has the advantages that the micro fuse of the current fuse 4 is used for protection, and the current fuse 4 is matched with the size of the capacitive current, and the current fuse 4 can maintain normal operation during product testing and normal operation, the capacitor core 3
  • the current fuse 4 is immediately blown by the instantaneous inrush current to cut off the power supply circuit of the capacitor core 3.
  • no malfunction occurs due to temperature changes during operation, and the insulation is destroyed only when the internal fault occurs in the product, and the current increases when the current increases.
  • the current fuse 4 protects the capacitor product, the original, auxiliary materials and manufacturing cost are low, the process is simple, the operation is convenient, the action response is quick, and the protection speed is fast. It is a new type of capacitor with energy saving, environmental protection and core technology, suitable for large Mass production; and the general technical workers do not deviate from the content of this core technology and affect the product quality of the capacitor.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Fuses (AREA)

Description

具有安全保护技术的自愈式电容器
技术领域
本发明涉及电容器的技术领域， 特别涉及具有安全保护技术的自愈式电容器。 背景技术
电容器产品其应用较为广泛， 但是现有众多的电容器其结构大致较为相同， 即对故 障电流过大缺少保护， 如下面论述：
现有的技术一， 如图 1、 图 la所示， 该电容器产品是由金属化聚丙烯薄膜、 阻燃或 不阻燃环氧树脂、 阻燃或不阻燃塑料和金属外壳、 引出端子组装而成， 无保护装置； 称 P0无专门的故障保护电容器； 该产品因为无安全保护装置， 已不适应安全环保、绿色为 主题的生产和生活的环境。
再现有的技术二， 如图 3、 图 3a所示， 该电容器产品是由金属化聚丙烯薄膜、 阻燃 环氧树脂或不阻燃环氧树脂、 阻燃或不阻燃塑料和金属外壳、 引出端子组装而成， 无保 护装置， 也称 P0无专门的故障保护电容器。 该产品因为无安全保护装置， 已不适应安 全环保、 绿色为主题的生产和生活的环境。
再现有的技术三， 如图 5所示， 安全膜电容器产品是由特殊网纹或菱形状的金属化 聚丙烯薄膜、 阻燃环氧树脂， 阻燃塑料外壳、 金属外壳、 引出端子组装而成。 它的保护 特点是在聚丙烯薄膜蒸镀金属层时， 蒸镀成独立、 规格的金属小方块， 各小方块之间蒸 镀成细小的金属条再将各小金属方块连接起来， 细小的金属条起到的作用同保险丝相 同。 称 P2防护等级电容器。 这种安全膜在蒸镀金属层时工艺复杂、 成本高， 电容器在 正常自愈时小金属条易断， 容量损失大。
再现有的技术四， 如图 6所示， 安全膜顾名思义就是安全的， 但是安全膜的薄膜利 用率十分的不理想， 按平方面积测量， 用安全膜制作电容器， 是通常制作电容器膜利用 率的 85%， 原、 辅材料成本和加工增高， 所以一般的配套厂很难接受上述用安全膜制作 的防爆电容器。
再现有的技术五， 如图 7、 图 7a所示， 该电容器产品是由金属化聚丙烯薄膜、 色拉 油或蓖麻油等电容器相关的部件、 金属外壳、 引出端子组装而成， 用防爆块、 小方铁、 复合线链接组成防暴器， 称 P1 防护等级电容器。 该产品虽然对安全性有一定的保障， 但电容器的原， 辅材料成本和制作成本很高。
再如现有的技术六， 如图 9、 图 9a所示， 该电容器产品是由金属化聚丙烯薄膜、 阻 燃或不阻燃环氧树脂、 阻燃或不阻燃塑料外壳、 金属外壳、 引出端子、 电阻和温度保险 丝组装而成， 称温度保护器灯具电容器。 该电容器是用温度保护器为保护装置， 原材料 成本和制造成本均较低， 但是， 经过多次的试验， 认为该电容器用温度保护器为保护装
- 1 - 确 认 本； 置有如下的欠缺： 温度保护器是以温度来保护的， 也就是说温度保护器是在电容器内部 温度超过温度保护器的额定温度时才会保护，温度保护器放在电容器的外壳内的任何一 个位置都很难找准，电容器在发热将要爆裂时，它不一定和热保护器放置的位置相对应， 虽然较为经济， 但很难起到保护作用。 发明内容
本发明所要解决的技术问题是针对现有技术的现状，提供一种制造成本低、工艺简 单、 操作方便、 动作反应敏捷、 保护速度快及节能环保的具有安全保护技术的自愈式电 容器。
本发明解决上述技术问题所采用的技术方案为： 具有安全保护技术的自愈式电容 器， 包括由阻燃塑料或金属制成的壳本体， 其特征是： 壳本体内腔密封嵌装有一个由金 属化聚丙烯薄膜卷绕而成的电容芯体， 并且该电容芯体与壳本体内腔之间填装有阻燃环 氧树脂体； 电容芯体上下两端头对应制有第一电触点和第二电触点， 第二电触点电接有 电流保险丝， 并且该电流保险丝电接有第二引出端线； 相应地， 第一电触点电接有第一 引出端线。
优选地，上述的电容芯体为中空圆柱体，其中左半中空圆柱体上端制有第一电触点； 右半圆柱体下端制有第二电触点； 电流保险丝位于电容芯体中空内腔中。
优选地，上述的壳本体内腔上部还嵌配扣设有第一盖体，第一引出端线和第二引出 端线贯穿第一盖体。
优选地， 上述的第一电触点上还电接有放电电阻， 并且该放电电阻另一极与第二电 触点电接； 壳本体内腔上部还嵌配扣装设有第二盖体， 第一引出端线和第二引出端线贯 穿第二盖体。
优选地， 上述的电容芯体在运行时发生严重的自愈放电或在热击穿时的瞬间， 由于 瞬间的冲击电流发生， 电流保险丝会立即熔断而切断所述的电容芯体的供电回路。
与现有技术相比，本发明采用的壳本体内腔密封嵌装有一个由金属化聚丙烯薄膜卷 绕而成的电容芯体， 并且该电容芯体与壳本体内腔之间填装有阻燃环氧树脂体； 电容芯 体上下两端头对应制有第一电触点和第二电触点， 第二电触点电接有电流保险丝， 并且 该电流保险丝电接有第二引出端线； 相应地， 第一电触点电接有第一引出端线。 采用微 型结构的电流保险丝作保护， 电流保险丝的选配是与容性电流的大小精确配置， 在产品 测试和正常运行时电流保险丝可保持正常工作， 电容芯体在运行时发生严重的自愈放电 或在热击穿时的瞬间， 由于瞬间的冲击电流发生， 电流保险丝会立即熔断而切断所述的 电容芯体的供电回路。 从而避免故障点增大而发生产品爆炸和事故的发生； 在运行时不 会因温度的变化而发生误动作， 只有在产品内部发生故障时绝缘被破坏， 电流增大的瞬 间才动作， 起到保护作用。 附图说明
图 1是现有技术一的纵向剖视示意图；
图 la是图 1的左视示意图；
图 2是本发明实施例一的纵向剖视示意图；
图 2a是图 2的左视示意图；
图 3是现有技术二的纵向剖视示意图；
图 3a是图 3的俯视示意图；
图 4是本发明实施例二的纵向剖视示意图；
图 4a是图 4的俯视示意图；
图 5是现有技术三的纵向剖视示意图；
图 6是现有技术四的纵向剖视示意图；
图 7是现有技术五的纵向剖视示意图；
图 7a是图 7的俯视示意图；
图 8是本发明实施例三的纵向剖视示意图；
图 8a是图 8的俯视示意图；
图 9是现有技术六的纵向剖视示意图；
图 9a是图 9的俯视示意图；
图 10是本发明实施例四的纵向剖视示意图;
图 10a是图 10的俯视示意图。 具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
如图 1至图 10a所示， 图标号说明如下： 壳本体 1， 第一引出端线 21， 第二引出端 线 22， 电容芯体 3， 第一电触点 31， 第二电触点 32， 左半中空圆柱体 33， 右半圆柱体 34， 电流保险丝 4, 阻燃环氧树脂体 5， 第一盖体 61， 第二盖体 62， 放电电阻 7。 如图 2、 图 2a所示， 为本发明实施例一， 该具有安全保护技术的自愈式电容器， 包括由阻燃塑料或金属制成的壳本体 1， 其中： 壳本体 1内腔密封嵌装有一个由金属化 聚丙烯薄膜卷绕而成的电容芯体 3， 并且该电容芯体 3与壳本体 1内腔之间填装有阻燃 环氧树脂体 5; 电容芯体 3上下两端头对应制有第一电触点 31和第二电触点 32， 第二 电触点 32电接有电流保险丝 4， 并且该电流保险丝 4电接有第二引出端线 22; 相应地， 第一电触点 31电接有第一引出端线 21。 如图 4、 图 4a所示， 为本发明实施例二， 该具有安全保护技术的自愈式电容器， 包括由阻燃塑料或金属制成的壳本体 1， 其中： 壳本体 1内腔密封嵌装有一个由金属化 聚丙烯薄膜卷绕而成的电容芯体 3， 并且该电容芯体 3与壳本体 1内腔之间填装有阻燃 环氧树脂体 5; 电容芯体 3上下两端头对应制有第一电触点 31和第二电触点 32， 第二 电触点 32电接有电流保险丝 4， 并且该电流保险丝 4电接有第二引出端线 22; 相应地， 第一电触点 31电接有第一引出端线 21。 电容芯体 3为中空圆柱体， 其中左半中空圆柱 体 33上端制有第一电触点 31 ; 右半圆柱体 34下端制有第二电触点 32; 电流保险丝 4 位于电容芯体 3中空内腔中。 如图 8、 图 8a所示， 为本发明实施例三， 在本发明实施例二的基础上， 本实施例 中的壳本体 1内腔上部还嵌配扣设有第一盖体 61，第一引出端线 21和第二引出端线 22 贯穿第一盖体 61。 如图 10、 图 10a所示， 为本发明实施例四， 该具有安全保护技术的自愈式电容器， 包括由阻燃塑料或金属制成的壳本体 1， 其中： 壳本体 1内腔密封嵌装有一个由金属化 聚丙烯薄膜卷绕而成的电容芯体 3， 并且该电容芯体 3与壳本体 1内腔之间填装有阻燃 环氧树脂体 5; 电容芯体 3上下两端头对应制有第一电触点 31和第二电触点 32， 第二 电触点 32电接有电流保险丝 4， 并且该电流保险丝 4电接有第二引出端线 22; 相应地， 第一电触点 31电接有第一引出端线 21。 第一电触点 31上还电接有放电电阻 7， 并且该 放电电阻 7另一极与第二电触点 32电接； 壳本体 1内腔上部还嵌配扣装设有第二盖体 62, 第一引出端线 21和第二引出端线 22贯穿第二盖体 62。 本发明的优点在于：采用微型结构的电流保险丝 4作保护， 电流保险丝 4的选配是 与容性电流的大小精确配置， 在产品测试和正常运行时电流保险丝 4可保持正常工作， 电容芯体 3在运行时发生严重的自愈放电或在热击穿时的瞬间， 由于瞬间的冲击电流发 生， 电流保险丝 4会立即熔断而切断所述的电容芯体 3的供电回路。 从而避免故障点增 大而发生产品爆炸和事故的发生； 在运行时不会因温度的变化而发生误动作， 只有在产 品内部发生故障时绝缘被破坏， 电流增大的瞬间才动作， 起到保护作用； 该电流保险丝 4保护电容器产品， 原、 辅材料和制造成本低、 工艺简单， 操作方便， 动作反应敏捷， 保护速度快， 是具有节能、 环保、 核心技术为一体的新型电容器， 适合大批量生产； 而 且一般技术工人操作也不会偏离本核心技术的内容和影响电容器的产品质量。
本发明的最佳实施例已被阐明，由本领域普通技术人员做出的各种变化或改型都不 会脱离本发明的范围。

Claims

权 利 要 求
1、 具有安全保护技术的自愈式电容器， 包括由阻燃塑料或金属制成的壳本体 (1)， 其特征是： 所述的壳本体（1)内腔密封嵌装有一个由金属化聚丙烯薄膜卷绕而成的电容 芯体 (3)， 并且该电容芯体 (3)与壳本体（1)内腔之间填装有阻燃环氧树脂体 (5) ; 所述的 电容芯体 (3)上下两端头对应制有第一电触点 (31)和第二电触点 (32)， 所述的第二电触 点 (32)电接有电流保险丝 (4)，并且该电流保险丝 (4)电接有第二引出端线 (22) ;相应地， 所述的第一电触点 (31)电接有第一引出端线 (21)。
2、 根据权利要求 1所述的具有安全保护技术的自愈式电容器， 其特征是： 所述的 电容芯体 (3)为中空圆柱体，其中左半中空圆柱体 (33)上端制有所述的第一电触点（31) ; 右半圆柱体 (34)下端制有所述的第二电触点（32) ; 所述的电流保险丝 (4)位于电容芯体 (3) 中空内腔中。
3、 根据权利要求 2所述的具有安全保护技术的自愈式电容器， 其特征是： 所述的 壳本体（1)内腔上部还嵌配扣设有第一盖体 (61)， 所述的第一引出端线 (21)和第二引出 端线 (22)贯穿所述的第一盖体 (61)。
4、 根据权利要求 1所述的具有安全保护技术的自愈式电容器， 其特征是： 所述的 第一电触点 (31)上还电接有放电电阻 (7)，并且该放电电阻 (7)另一极与所述的第二电触 点 (32)电接； 所述的壳本体 (1)内腔上部还嵌配扣装设有第二盖体 (62)， 所述的第一引 出端线 (21)和第二引出端线 (22)贯穿所述的第二盖体 (62)。
5、根据权利要求 1至 4中任一权利要求所述的具有安全保护技术的自愈式电容器， 其特征是： 所述的电容芯体 (3)在运行时发生严重的自愈放电或在热击穿时的瞬间， 由 于瞬间的冲击电流发生，所述的电流保险丝 (4)会立即熔断而切断所述的电容芯体 (3)的 供电回路。
PCT/CN2010/000342 2009-05-21 2010-03-22 具有安全保护技术的自愈式电容器 WO2010133079A1 (zh)

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CN101567262B (zh) * 2009-05-21 2012-04-25 刘国光 具有安全保护技术的自愈式电容器
CN104779050B (zh) * 2015-04-04 2018-06-05 佛山市顺德区巨华电力电容器制造有限公司 一种椭圆型的带温控检测自愈式低压无功补偿电容器
CN105448522A (zh) * 2016-01-16 2016-03-30 郭艳明 一种新型电容器
CN105742064A (zh) * 2016-01-27 2016-07-06 苏州权素船舶电子有限公司 一种电容器
CN106504896B (zh) * 2016-11-16 2018-06-01 安徽飞达电气科技有限公司 一种金属化聚丙烯膜抗干扰阻容模块
CN113363074A (zh) * 2021-07-12 2021-09-07 无锡市电力滤波有限公司 一种高压自愈式电容器用压力保护器

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