WO2014190753A1 - Highly reliable motor starting/intermittent operation capacitor - Google Patents

Highly reliable motor starting/intermittent operation capacitor Download PDF

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Publication number
WO2014190753A1
WO2014190753A1 PCT/CN2014/000485 CN2014000485W WO2014190753A1 WO 2014190753 A1 WO2014190753 A1 WO 2014190753A1 CN 2014000485 W CN2014000485 W CN 2014000485W WO 2014190753 A1 WO2014190753 A1 WO 2014190753A1
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area
region
capacitor
gap
narrow
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PCT/CN2014/000485
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French (fr)
Chinese (zh)
Inventor
许峰
张自魁
潘浩
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上海皓月电气有限公司
上海皓月电容器有限公司
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Publication of WO2014190753A1 publication Critical patent/WO2014190753A1/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
    • 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
    • H01G4/005—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
    • H01G4/32—Wound capacitors

Definitions

  • the present invention relates to the field of capacitor technology, and in particular to a highly reliable motor starting/intermittent operation.
  • One of the existing motor starting capacitors is an aluminum electrolytic starting capacitor: as shown in Fig. 1 and Fig. 2, it is wound into an aluminum electrolytic core 36 by an electrolytic foil and a separator paper, and the electrolyte is adhered to the aluminum electrolytic core 36.
  • the aluminum electrolytic core 36 is connected to the bakelite cover 33 and the lead terminal 1 through the lead electrode foil 34, and then loaded into the bakelite case 35, and the aluminum electrolytic core 36 is fixed by the fixing glue 37, and the bakelite cover is fixed.
  • the plate 33 is crimped to the bakelite casing 35 by a metal retaining spring 32, and a bakelite cover 33 is provided with a pressure release hole 38.
  • FIG. 3 Another type of motor starting capacitor is a metallized polypropylene film starting capacitor: as shown in Fig. 3, it comprises an aluminum casing 9, and upper and lower positioning sleeves 51, 52 are mounted in the aluminum casing 9, above and below.
  • a capacitor core 8 is disposed between the positioning sleeves;
  • a cover body 2 is disposed above the upper positioning sleeve 51 of the aluminum housing 9, and the upper end of the cover body 2 has a lead terminal 1, and the lower end of the lead terminal 1 passes through the upper positioning sleeve through the connecting line 6.
  • the capacitor core 8 is wound by two layers of a single non-polar medium polypropylene film. to make.
  • the advantage is that the non-polar medium polypropylene film has stable performance, safety and high reliability.
  • the disadvantages are: The polypropylene film has a small dielectric constant, resulting in a large product volume; the product structure is complicated and the product cost is high. Summary of the invention
  • the object of the present invention is to provide a highly reliable motor starting/intermittent operation capacitor, which not only solves the problem of large leakage current of the existing aluminum electrolytic starting capacitor, high energy consumption of the product, large leakage current, and easy failure; the electrolyte volatilizes and causes the capacitor to fail. Moreover, it solves the technical problems of the existing metallized polypropylene film starting capacitor product with large volume, complicated product structure and high cost, and greatly improves the comprehensive performance of the starting capacitor.
  • the technical solution of the present invention is:
  • a highly reliable motor starting/intermittent operation capacitor comprising a casing, wherein a capacitor core is disposed in the casing; wherein: the capacitor core is wound by two layers of a polyester film polar dielectric layer; The dielectric layer has a metallization layer;
  • the gap operation period of the capacitor is:
  • the dielectric constant of the polyester film polar medium is large, and the capacitor produced is small in volume, but because it is a polar medium, its leakage current is relatively large compared with the non-polar medium, and the heat is also relatively serious with respect to the non-polar medium, which is prone to occur. Thermal breakdown. Therefore, in the capacitor industry, the polar medium acts as a dielectric material for the DC capacitor and is not used for the AC capacitor.
  • the motor start/intermittent operation capacitor works in the AC environment, but it is only in the working state when the motor is started or the gap is running. The working time (energization time) is short, although the heat generation is larger than the non-polar medium, it will not be generated. Severe breakdown. Therefore, it is completely feasible to use the starting capacitor.
  • the high-reliability motor starting/intermittent operation capacitor is characterized in that: the safety film of the polar dielectric layer having the metallization layer has a grid region and a ⁇ -shaped region; in the grid region, the coating of the metallization layer is narrowed
  • the gap strip is divided into a plurality of small-area units, and there are narrow coating joints between adjacent small-area units, the outer edge of which is a thickened area, and the thickened area and the small-area unit are separated by a plurality of additional gap grooves, and the additional gap groove is provided. There is also a narrow coating contact between them; in the ⁇ -shaped region, the outer edge has a margin.
  • the high reliability motor starting/intermittent operation capacitor is characterized in that the safety film of the polar dielectric layer having the metallization layer has a mesh region and a shape region; in the mesh region, the coating of the metallization layer is narrowed
  • the strip is divided into a plurality of small-area units, and there are narrow coating joints between adjacent small-area units, and the outer edge has a margin; in the ⁇ -shaped area, the outer edge has a thickened area, the thickened area and the inner side of the ⁇ -shaped area
  • the metallized regions are separated by a number of additional void grooves, which also have narrow coating contacts between the additional void cells.
  • the high reliability motor starting/intermittent operation capacitor is characterized in that: the safety film of the polar dielectric layer having the metallization layer has a mesh region; in the mesh region, the coating of the metallization layer is divided into narrow gap strips into a plurality of small-area units having narrow coating joints between adjacent small-area units, one side edge having a margin, the other side edge having a thickened area, and a plurality of additional gaps between the thickened area and the small-area unit The grooves are separated, and the additional gap grooves also have narrow coating contacts.
  • the high reliability motor starting/intermittent operation capacitor is characterized in that: the safety film of the polar medium layer having the metallization layer has a shape; in the shape region, one side edge has a margin and the other side edge thereof There is a thickened zone, and the thickened zone and the inner metallized zone of the ⁇ -shaped zone are separated by a plurality of additional gap grooves, and the additional gap grooves also have narrow coating joints; the left edge and the ⁇ -shaped zone with the insulating isolation gap
  • the inter-region is an integral metallization region, and the metallization region is also separated from the ⁇ -shaped region having an insulating isolation gap by a plurality of additional gap grooves, and the additional gap grooves are also Has a narrow coating contact.
  • the high reliability motor starting/intermittent operation capacitor is characterized in that: the safety film of the polar dielectric layer having the metallization layer has a ⁇ -shaped region; in the ⁇ -shaped region, one side edge thereof has a margin, and the other The side edge has a thickened area, and the thickened area is separated from the inner metallized area of the ⁇ -shaped area by a plurality of additional gap grooves, and the additional gap groove also has a narrow coating contact; the ⁇ -shaped area has an insulating isolation gap, and the insulating isolation gap There are also narrow coating contacts between them.
  • 1 is a schematic view showing the structure of a conventional aluminum electrolytic starting capacitor.
  • Figure 2 is a plan view of Figure 1.
  • FIG. 3 is a schematic view showing the structure of a conventional metallized polypropylene film starting capacitor.
  • Embodiment 1 of the present invention is a schematic structural view of Embodiment 1 of the present invention.
  • Fig. 5 is a view showing the structure of a core of Embodiment 1 of the present invention.
  • Figure 6 is a schematic view showing the structure of a metallized security film in Embodiment 1 of the present invention.
  • Figure 7 is a schematic view showing the structure of Embodiment 2 of the present invention.
  • Figure 8 is a plan view of Figure 7.
  • Figure 9 is a schematic view showing the structure of a metallized security film in Embodiment 2 of the present invention.
  • Figure 10 is a schematic view showing the structure of a third embodiment of the present invention.
  • Figure 11 is a schematic view showing the failure structure of Embodiment 3 of the present invention.
  • Figure 12 is a schematic view showing the structure of a metallized security film in Embodiment 3 of the present invention.
  • Figure 13 is a schematic view showing the structure of a fourth embodiment of the present invention.
  • Figure 14 is a schematic view showing the structure of a metallized security film in Embodiment 4 of the present invention.
  • Figure 15 is a schematic view showing the structure of a metallized security film in Embodiment 5 of the present invention.
  • FIG. 4-6 it is a schematic structural view of a highly reliable motor starting/intermittent operation capacitor embodiment 1 of the present invention.
  • It comprises a bakelite casing 35, in which a capacitor core 8 is arranged; the capacitor core 8 is connected to the lead terminal 1 on the bakelite cover 33 via a connecting line 6; the bakelite cover 33 passes The metal retaining spring 32 is fastened in the bakelite casing 35; the bakelite cover 33 is provided with a pressure release hole 38.
  • the capacitor core 8 is formed by composite winding of a polar dielectric layer 81 and another polar dielectric layer 82.
  • the polar dielectric layers 81 and 82 are all formed by a polyester film composite winding; the gap operation period of the capacitor is :
  • the polar dielectric layers 81, 8 each have a metallization layer 83.
  • the security film having the polar dielectric layer 81 of the metallization layer 83 and the non-polar dielectric layer 82 has a mesh region and a ⁇ -shaped region.
  • the coating of the metallization layer 83 is divided into a plurality of small-area cells by a narrow gap strip, and a narrow coating contact 834 is arranged between the adjacent small-area units, and the outer edge is a thickened area.
  • the thickened area 831 and the small area unit are separated by a plurality of additional gap grooves, and the additional gap grooves also have a narrow coating contact 833; in the ⁇ -shaped area, the outer edge has a retaining edge 84.
  • FIG. 7-9 it is a schematic view of a high reliability motor starting/intermittent operation capacitor embodiment 2 of the present invention.
  • It has a plastic outer casing 35 and has a capacitor core 8 having the same structure as that of the embodiment 1, and the plastic cover 39 is combined with the plastic outer casing 35 by plastic welding or ultrasonic welding.
  • the plastic cover 39 is provided with a pressure release hole 38.
  • the security film also has a grid region and a ⁇ -shaped region; in the grid region, the coating of the metallization layer 83 is divided into a plurality of small-area cells by narrow gap strips, and there is a narrow gap between adjacent small-area cells.
  • FIG. 10-12 is a schematic structural diagram of Embodiment 3 of the present invention.
  • It comprises an aluminum casing 9 in which upper and lower positioning sleeves 51, 52 are mounted, and a capacitor core 8 is disposed between the upper and lower positioning sleeves;
  • a cover body 2 is disposed above the positioning sleeve 51, and the upper end of the cover body 2 has a lead terminal 1, and the lower end of the lead terminal 1 passes through the upper positioning sleeve 51 through the connecting line 6.
  • the capacitor core 8 is connected; the cover 2 is enclosed in the aluminum casing 9 by the bead 91 of the aluminum casing 9.
  • the structure of the capacitor core 8 is the same as that of the first and second embodiments.
  • Fig. 12 it is a security film structure of a polar dielectric layer 81 having a metallization layer 83 and a non-polar dielectric layer 82 in Embodiment 3 of the present invention.
  • the coating of the metallization layer 83 is divided into a plurality of small-area cells by narrow gap strips, and there are narrow coating contacts 834 between adjacent small-area units, and one side edge has a margin 84
  • the other side edge has a thickened area 831, and the thickened area 831 is separated from the small area unit by a plurality of additional gap grooves, and the additional gap groove also has a narrow coating contact 833 therebetween.
  • Embodiment 4 of the present invention is a schematic structural view of Embodiment 4 of the present invention.
  • the structure is basically the same as that of Embodiment 3, except that:
  • the bottom of the capacitor aluminum casing 9 can be provided with fixing bolts 12 to facilitate the mounting and fixing of the capacitor.
  • FIG. 14 it is a security film structure of a polar dielectric layer 81 having a metallization layer 83 and a non-polar dielectric layer 82 in Embodiment 4 of the present invention.
  • one side edge has a retaining edge 84
  • the other side edge has a thickened region 831
  • the thickened region 831 and the ⁇ -shaped inner metallized region 832 pass through a number of additional gap slots.
  • the additional gap grooves also have a narrow coating contact 833
  • the area between the trailing edge 84 and the ⁇ -shaped region having the insulating spacer gap 836 is an integral metallized region 832, which is insulated from the insulation.
  • the ⁇ -shaped regions of the gap 836 are also separated by a number of additional void slots, and the additional void trenches also have narrow coating contacts 833 therebetween.
  • Fig. 15 is a security film structure of the polar dielectric layer 81 and the non-polar dielectric layer 82 having the metallization layer 83 in the fifth embodiment of the present invention.
  • one side edge has a retaining edge 84, and the other side edge has a thickened portion 831, a thickened region 831 and a metal inside the ⁇ -shaped region.
  • the regions 832 are separated by a plurality of additional gap grooves, and the additional gap grooves also have narrow coating contacts 833; the ⁇ -shaped regions have insulating isolation gaps 836, and the insulating isolation gaps 836 also have narrow coating contacts 833 therebetween.

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

Abstract

The present invention relates to the technical field of capacitors, and specifically relates to a highly reliable motor starting/intermittent operation capacitor. Same comprises a housing and a capacitor core arranged within the housing. The capacitor core is formed by winding two polyester thin-film polarized dielectric layers. The polyester thin-film polarized dielectric layers are provided thereon with a metalized layer. The capacitor primarily solves the technical problem that an existing aluminum electrolytic starting capacitor is of a large leakage current, high energy consumption, low reliability and safeness, and that an existing non-polarized dielectric metallized film starting capacitor is of a large size, complex product structure, and high costs, thus greatly increasing the comprehensive performance of the starting capacitor.

Description

一种髙可靠的电动机起动 /间歇运行电容器  A reliable motor starting/intermittent operation capacitor
技术领域 Technical field
本发明涉及电容器技术领域，特别是一种高可靠的电动机起动 /间歇运行 背景技术  The present invention relates to the field of capacitor technology, and in particular to a highly reliable motor starting/intermittent operation.
现有电动机起动电容器一种是铝电解起动电容器： 如图 1、 图 2所示， 它采用电解箔及隔极纸卷绕成铝电解芯子 36， 电解液粘附在铝电解芯子 36 的电解箔及隔极纸上， 铝电解芯子 36通过引出电极箔 34连接到胶木盖板 33 及引出端子 1， 然后装入胶木外壳 35， 由固定胶 37将铝电解芯子 36固定， 胶木盖板 33由金属卡簧 32压接在胶木外壳 35， 胶木盖板 33上设置有压力 释放孔 38。 铝电解起动电容器的优点是体积小， 成本低； 其缺点是： 1 ) 漏 电流大， 产品能耗高； 2)漏电流大， 易失效； 3) 产品为压封结构， 长时间 放置， 电解液易挥发而导致电容失效。  One of the existing motor starting capacitors is an aluminum electrolytic starting capacitor: as shown in Fig. 1 and Fig. 2, it is wound into an aluminum electrolytic core 36 by an electrolytic foil and a separator paper, and the electrolyte is adhered to the aluminum electrolytic core 36. On the electrolytic foil and the separator paper, the aluminum electrolytic core 36 is connected to the bakelite cover 33 and the lead terminal 1 through the lead electrode foil 34, and then loaded into the bakelite case 35, and the aluminum electrolytic core 36 is fixed by the fixing glue 37, and the bakelite cover is fixed. The plate 33 is crimped to the bakelite casing 35 by a metal retaining spring 32, and a bakelite cover 33 is provided with a pressure release hole 38. The advantages of aluminum electrolytic starting capacitors are small size and low cost; the disadvantages are: 1) large leakage current and high energy consumption; 2) large leakage current and easy failure; 3) product is sealed structure, placed for a long time, electrolysis The liquid is volatile and causes the capacitor to fail.
现有电动机起动电容器另一种是金属化聚丙烯薄膜起动电容器： 如图 3 所示， 它包括一铝外壳 9， 在铝外壳 9内安装有上、 下定位套 51、 52, 在上、 下定位套之间设有电容芯子 8;铝外壳 9内的上定位套 51上方设置一盖体 2， 盖体 2上端具有引出端子 1， 该引出端子 1下端通过连接线 6穿过上定位套 51与电容芯子 8连接； 盖体 2被铝外壳 9的卷边 91封装在铝外壳 9内； 其 特征在于： 电容芯子 8由两层单一的非极性介质聚丙烯薄膜经卷绕而成。 优 点是非极性介质聚丙烯薄膜性能稳定、 安全及可靠性高。 但缺点是： 聚丙烯 薄膜介电常数较小， 导致产品体积较大； 产品结构复杂， 产品成本高。 发明内容 Another type of motor starting capacitor is a metallized polypropylene film starting capacitor: as shown in Fig. 3, it comprises an aluminum casing 9, and upper and lower positioning sleeves 51, 52 are mounted in the aluminum casing 9, above and below. A capacitor core 8 is disposed between the positioning sleeves; a cover body 2 is disposed above the upper positioning sleeve 51 of the aluminum housing 9, and the upper end of the cover body 2 has a lead terminal 1, and the lower end of the lead terminal 1 passes through the upper positioning sleeve through the connecting line 6. 51 is connected to the capacitor core 8; the cover 2 is encapsulated in the aluminum casing 9 by the bead 91 of the aluminum casing 9; characterized in that: the capacitor core 8 is wound by two layers of a single non-polar medium polypropylene film. to make. The advantage is that the non-polar medium polypropylene film has stable performance, safety and high reliability. However, the disadvantages are: The polypropylene film has a small dielectric constant, resulting in a large product volume; the product structure is complicated and the product cost is high. Summary of the invention
本发明的目的在于提供一种高可靠的电动机起动 /间歇运行电容器，不但 解决现有铝电解起动电容器漏电流大， 产品能耗高； 漏电流大， 易失效； 电 解液挥发而导致电容失效， 而且解决现有金属化聚丙烯薄膜起动电容器产品 体积较大、产品结构复杂、成本高的技术问题，大大提高了起动电容器的综合 性能。  The object of the present invention is to provide a highly reliable motor starting/intermittent operation capacitor, which not only solves the problem of large leakage current of the existing aluminum electrolytic starting capacitor, high energy consumption of the product, large leakage current, and easy failure; the electrolyte volatilizes and causes the capacitor to fail. Moreover, it solves the technical problems of the existing metallized polypropylene film starting capacitor product with large volume, complicated product structure and high cost, and greatly improves the comprehensive performance of the starting capacitor.
为解决上述技术问题， 本发明的技术方案是：  In order to solve the above technical problem, the technical solution of the present invention is:
一种高可靠的电动机起动 /间歇运行电容器， 它包括一外壳， 在外壳内设 置有电容芯子； 其特征在于： 电容芯子由两层聚酯薄膜极性介质层卷绕而成； 该极性介质层上均具有金属化层；  A highly reliable motor starting/intermittent operation capacitor comprising a casing, wherein a capacitor core is disposed in the casing; wherein: the capacitor core is wound by two layers of a polyester film polar dielectric layer; The dielectric layer has a metallization layer;
该电容器的间隙运行周期为：  The gap operation period of the capacitor is:
Figure imgf000003_0001
聚酯薄膜极性介质的介电常数大， 制成的电容器体积较小， 但因其为极 性介质， 其漏电流相对非极性介质较大， 发热也相对非极性介质严重， 易出 现热击穿。 因此， 在电容器行业， 极性介质均作为直流电容器的介质材料， 而不用于交流电容器。而电动机起动 /间歇运行电容器工作于交流电环境，但 其仅在电动机起动或间隙运行时才处于工作状态， 工作时间 （通电时间） 较 短， 虽发热量较非极性介质大， 但不会产生严重的击穿。 因此， 作起动电容 是完全可行的。 所述的高可靠的电动机起动 /间歇运行电容器， 其特征在于： 具有金属化 层的极性介质层的安全膜具有网格区和 π形区； 在网格区， 金属化层的镀膜 被窄空隙条分割成若干小面积单元，相邻小面积单元之间有有窄形镀膜接点， 其外侧边缘为加厚区， 加厚区与小面积单元之间通过若干附加空隙槽分隔， 附加空隙槽之间也具有窄形镀膜接点； 在 π形区， 其外侧边缘具有留边。
Figure imgf000003_0001
The dielectric constant of the polyester film polar medium is large, and the capacitor produced is small in volume, but because it is a polar medium, its leakage current is relatively large compared with the non-polar medium, and the heat is also relatively serious with respect to the non-polar medium, which is prone to occur. Thermal breakdown. Therefore, in the capacitor industry, the polar medium acts as a dielectric material for the DC capacitor and is not used for the AC capacitor. The motor start/intermittent operation capacitor works in the AC environment, but it is only in the working state when the motor is started or the gap is running. The working time (energization time) is short, although the heat generation is larger than the non-polar medium, it will not be generated. Severe breakdown. Therefore, it is completely feasible to use the starting capacitor. The high-reliability motor starting/intermittent operation capacitor is characterized in that: the safety film of the polar dielectric layer having the metallization layer has a grid region and a π-shaped region; in the grid region, the coating of the metallization layer is narrowed The gap strip is divided into a plurality of small-area units, and there are narrow coating joints between adjacent small-area units, the outer edge of which is a thickened area, and the thickened area and the small-area unit are separated by a plurality of additional gap grooves, and the additional gap groove is provided. There is also a narrow coating contact between them; in the π-shaped region, the outer edge has a margin.
所述的高可靠的电动机起动 /间歇运行电容器，其特征在于：具有金属化 层的极性介质层的安全膜具有网格区和 形区； 在网格区， 金属化层的镀膜 被窄空隙条分割成若干小面积单元，相邻小面积单元之间有有窄形镀膜接点， 其外侧边缘具有留边； 在 π形区， 其外侧边缘具有加厚区， 加厚区与 π形区 内侧金属化区域之间通过若干附加空隙槽分隔， 附加空隙槽之间也具有窄形 镀膜接点。  The high reliability motor starting/intermittent operation capacitor is characterized in that the safety film of the polar dielectric layer having the metallization layer has a mesh region and a shape region; in the mesh region, the coating of the metallization layer is narrowed The strip is divided into a plurality of small-area units, and there are narrow coating joints between adjacent small-area units, and the outer edge has a margin; in the π-shaped area, the outer edge has a thickened area, the thickened area and the inner side of the π-shaped area The metallized regions are separated by a number of additional void grooves, which also have narrow coating contacts between the additional void cells.
所述的高可靠的电动机起动 /间歇运行电容器， 其特征在于： 具有金属化 层的极性介质层的安全膜具有网格区； 在网格区， 金属化层的镀膜被窄空隙 条分割成若干小面积单元， 相邻小面积单元之间有有窄形镀膜接点， 其一侧 边缘具有留边， 其另一侧边缘具有加厚区， 加厚区与小面积单元之间通过若 干附加空隙槽分隔， 附加空隙槽之间也具有窄形镀膜接点。  The high reliability motor starting/intermittent operation capacitor is characterized in that: the safety film of the polar dielectric layer having the metallization layer has a mesh region; in the mesh region, the coating of the metallization layer is divided into narrow gap strips into a plurality of small-area units having narrow coating joints between adjacent small-area units, one side edge having a margin, the other side edge having a thickened area, and a plurality of additional gaps between the thickened area and the small-area unit The grooves are separated, and the additional gap grooves also have narrow coating contacts.
所述的高可靠的电动机起动 /间歇运行电容器，其特征在于： 具有金属化 层的极性介质层的安全膜具有 形区； 在 形区， 其一侧边缘具有留边， 其 另一侧边缘具有加厚区， 加厚区与 π形区内侧金属化区域之间通过若干附加 空隙槽分隔， 附加空隙槽之间也具有窄形镀膜接点； 留边与具有绝缘隔离间 隙的 π形区区域之间的区域为一整体金属化区域， 该金属化区域与具有绝缘 隔离间隙的 π形区区域之间也通过若干附加空隙槽分隔， 附加空隙槽之间也 具有窄形镀膜接点。 The high reliability motor starting/intermittent operation capacitor is characterized in that: the safety film of the polar medium layer having the metallization layer has a shape; in the shape region, one side edge has a margin and the other side edge thereof There is a thickened zone, and the thickened zone and the inner metallized zone of the π-shaped zone are separated by a plurality of additional gap grooves, and the additional gap grooves also have narrow coating joints; the left edge and the π-shaped zone with the insulating isolation gap The inter-region is an integral metallization region, and the metallization region is also separated from the π-shaped region having an insulating isolation gap by a plurality of additional gap grooves, and the additional gap grooves are also Has a narrow coating contact.
所述的高可靠的电动机起动 /间歇运行电容器，其特征在于： 具有金属化 层的极性介质层的安全膜具有 π形区； 在 π形区， 其一侧边缘具有留边， 其 另一侧边缘具有加厚区， 加厚区与 π形区内侧金属化区域之间通过若干附加 空隙槽分隔， 附加空隙槽之间也具有窄形镀膜接点； π形区具有绝缘隔离间 隙， 绝缘隔离间隙之间也具有窄形镀膜接点。  The high reliability motor starting/intermittent operation capacitor is characterized in that: the safety film of the polar dielectric layer having the metallization layer has a π-shaped region; in the π-shaped region, one side edge thereof has a margin, and the other The side edge has a thickened area, and the thickened area is separated from the inner metallized area of the π-shaped area by a plurality of additional gap grooves, and the additional gap groove also has a narrow coating contact; the π-shaped area has an insulating isolation gap, and the insulating isolation gap There are also narrow coating contacts between them.
与现有技术相比， 本发明的有益效果是：  Compared with the prior art, the beneficial effects of the present invention are:
1、解决了现有铝电解起动电容器漏电流大， 产品能耗高； 漏电流大， 易 失效； 电解液易挥发而导致电容失效的问题。  1. It solves the problem that the existing aluminum electrolytic starting capacitor has large leakage current and high energy consumption; the leakage current is large and easy to be broken; the electrolyte is volatile and causes the capacitor to fail.
2、解决了现有金属化聚丙烯薄膜起动电容器产品体积较大、产品结构复 杂、 成本高的技术问题。  2. Solved the technical problem that the existing metallized polypropylene film starting capacitor product has large volume, complicated product structure and high cost.
附图说明 DRAWINGS
图 1是现有一种铝电解起动电容器的结构示意图。  1 is a schematic view showing the structure of a conventional aluminum electrolytic starting capacitor.
图 2是图 1的俯视图。  Figure 2 is a plan view of Figure 1.
图 3是现有一种金属化聚丙烯膜起动电容器的结构示意图。  3 is a schematic view showing the structure of a conventional metallized polypropylene film starting capacitor.
图 4是本发明实施例 1的结构示意图  4 is a schematic structural view of Embodiment 1 of the present invention.
图 5是本发明实施例 1的芯子的结构示意图。  Fig. 5 is a view showing the structure of a core of Embodiment 1 of the present invention.
图 6是本发明实施例 1中金属化安全膜的结构示意图。  Figure 6 is a schematic view showing the structure of a metallized security film in Embodiment 1 of the present invention.
图 7是本发明实施例 2的结构示意图  Figure 7 is a schematic view showing the structure of Embodiment 2 of the present invention.
图 8是图 7的俯视图。  Figure 8 is a plan view of Figure 7.
图 9是本发明实施例 2中金属化安全膜的结构示意图。  Figure 9 is a schematic view showing the structure of a metallized security film in Embodiment 2 of the present invention.
图 10是本发明实施例 3的结构示意图。 图 11是本发明实施例 3的失效结构示意图。 图 12是本发明实施例 3中金属化安全膜的结构示意图。 图 13是本发明实施例 4的结构示意图。 图 14是本发明实施例 4中金属化安全膜的结构示意图。 图 15是本发明实施例 5中金属化安全膜的结构示意图。 图中： 1-引出端子； 2-盖体； 3-防爆块； 4-焊片； 51-上定位套； 52-下 定位套； 6-连接线； 7-填充料； 8-电容芯子； 9-铝外壳； 91-卷边 10-喷金层； 11 -悍锡； 12-固定螺栓； 17-防爆线拉断点； 32-金属卡簧； 33-胶木盖板； 34- 引出电极箔； 35-塑料 /胶木外壳； 36-铝电解芯子； 37-固定胶； 38-压力释放 孔； 39-塑料盖； 81、 82-极性介质层； 83-金属化层； 84-留边； 85-错边； 831- 加厚区； 832-金属化区域； 833、 834-窄形镀膜接点； 836-绝缘隔离间隙。 具体实施方式 请参阅图 4-6， 它是本发明一种高可靠的电动机起动 /间歇运行电容器实 施例 1的结构示意图。 如图所示： 它包括一胶木外壳 35， 在胶木外壳 35内 设置有电容芯子 8; 电容芯子 8通过连接线 6与胶木盖板 33上的引出端子 1 相连接； 胶木盖板 33通过金属卡簧 32卡固在胶木外壳 35内； 胶木盖板 33 上设置有压力释放孔 38。 电容芯子 8由极性介质层 81和另一极性介质层 82 复合卷绕而成， 该极性介质层 81、 82均为聚酯薄膜复合卷绕而成； 该电容器的间隙运行周期为： Figure 10 is a schematic view showing the structure of a third embodiment of the present invention. Figure 11 is a schematic view showing the failure structure of Embodiment 3 of the present invention. Figure 12 is a schematic view showing the structure of a metallized security film in Embodiment 3 of the present invention. Figure 13 is a schematic view showing the structure of a fourth embodiment of the present invention. Figure 14 is a schematic view showing the structure of a metallized security film in Embodiment 4 of the present invention. Figure 15 is a schematic view showing the structure of a metallized security film in Embodiment 5 of the present invention. In the figure: 1-lead terminal; 2-cover body; 3-explosion-proof block; 4-welding piece; 51-up positioning sleeve; 52-lower positioning sleeve; 6-connection line; 7-filler; 8-capacitor core 9-aluminum outer casing; 91-beaded 10-sprayed gold layer; 11 - antimony tin; 12-fixed bolt; 17-explosion-proof line pull-off point; 32-metal circlip; 33-bakelite cover; 34- lead-out electrode Foil; 35-plastic/bakelite shell; 36-aluminum electrolytic core; 37-fixed glue; 38-pressure relief hole; 39-plastic cover; 81, 82-polar dielectric layer; 83-metallized layer; Edge; 85-wrong edge; 831- thickened area; 832-metallized area; 833, 834-narrow coated joint; 836-insulated isolation gap. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to Figures 4-6, it is a schematic structural view of a highly reliable motor starting/intermittent operation capacitor embodiment 1 of the present invention. As shown in the figure: It comprises a bakelite casing 35, in which a capacitor core 8 is arranged; the capacitor core 8 is connected to the lead terminal 1 on the bakelite cover 33 via a connecting line 6; the bakelite cover 33 passes The metal retaining spring 32 is fastened in the bakelite casing 35; the bakelite cover 33 is provided with a pressure release hole 38. The capacitor core 8 is formed by composite winding of a polar dielectric layer 81 and another polar dielectric layer 82. The polar dielectric layers 81 and 82 are all formed by a polyester film composite winding; the gap operation period of the capacitor is :
运行周期  Operation cycle
通电 （on) 断电 （off) 启动次数  Power on (on) power off (off) number of starts
秒 （S ) 秒 （S )  Seconds (S) seconds (S)
3/4-10 ^ 10 50000次 3/4-10 ^ 10 50000 times
3/4-2 ^2 10000次 以下是针对实施例 1结构的电容器的检测试验情况： 3/4-2 ^2 10,000 times The following is a test test for the capacitor of the structure of Embodiment 1:
该极性介质层 81、 8 上均具有金属化层 83。 实施例 1中， 具有金属化 层 83的极性介质层 81及非极性介质层 82的安全膜具有网格区和 π形区。如 图 6所示：在网格区，金属化层 83的镀膜被窄空隙条分割成若干小面积单元， 相邻小面积单元之间有有窄形镀膜接点 834，其外侧边缘为加厚区 831，加厚 区 831与小面积单元之间通过若干附加空隙槽分隔， 附加空隙槽之间也具有 窄形镀膜接点 833; 在 π形区， 其外侧边缘具有留边 84。  The polar dielectric layers 81, 8 each have a metallization layer 83. In Embodiment 1, the security film having the polar dielectric layer 81 of the metallization layer 83 and the non-polar dielectric layer 82 has a mesh region and a π-shaped region. As shown in FIG. 6 , in the grid region, the coating of the metallization layer 83 is divided into a plurality of small-area cells by a narrow gap strip, and a narrow coating contact 834 is arranged between the adjacent small-area units, and the outer edge is a thickened area. 831, the thickened area 831 and the small area unit are separated by a plurality of additional gap grooves, and the additional gap grooves also have a narrow coating contact 833; in the π-shaped area, the outer edge has a retaining edge 84.
请参阅图 7-9， 它是本发明一种高可靠的电动机起动 /间歇运行电容器实 施例 2的结构示意图。 如图所示： 它具有塑料外壳 35， 并具有与实施例 1具 有相同结构的电容芯子 8， 塑料盖 39采用塑料焊接或超声波焊接形式与塑料 外壳 35组合在一起。 塑料盖 39上设置有压力释放孔 38。  Referring to Figures 7-9, it is a schematic view of a high reliability motor starting/intermittent operation capacitor embodiment 2 of the present invention. As shown in the figure: It has a plastic outer casing 35 and has a capacitor core 8 having the same structure as that of the embodiment 1, and the plastic cover 39 is combined with the plastic outer casing 35 by plastic welding or ultrasonic welding. The plastic cover 39 is provided with a pressure release hole 38.
再请参阅图 9， 它是本发明实施例 2中的具有金属化层 83的极性介质层 81及非极性介质层 82的安全膜结构。 如图所示： 该安全膜也具有网格区和 π形区； 在网格区， 金属化层 83的镀膜被窄空隙条分割成若干小面积单元， 相邻小面积单元之间有有窄形镀膜接点 834， 其外侧边缘具有留边 84; 在 π 形区，其外侧边缘具有加厚区 831，加厚区 831与 π形区内侧金属化区域 832 之间通过若干附加空隙槽分隔， 附加空隙槽之间也具有窄形镀膜接点 833。  Referring again to Figure 9, it is a security film structure of a polar dielectric layer 81 having a metallization layer 83 and a non-polar dielectric layer 82 in Embodiment 2 of the present invention. As shown in the figure: the security film also has a grid region and a π-shaped region; in the grid region, the coating of the metallization layer 83 is divided into a plurality of small-area cells by narrow gap strips, and there is a narrow gap between adjacent small-area cells. a coating contact 834 having a lateral edge 84; in the π-shaped region, the outer edge has a thickened region 831, and the thickened region 831 and the inner metallized region 832 of the π-shaped region are separated by a plurality of additional void grooves, There are also narrow coating contacts 833 between the gap slots.
请参阅图 10-12， 它是本发明实施例 3的结构示意图。 如图所示： 它包 括一铝外壳 9， 在铝外壳 9内安装有上、 下定位套 51、 52, 在上、 下定位套 之间设有电容芯子 8; 该铝外壳 9内的上定位套 51上方设置一盖体 2， 盖体 2上端具有引出端子 1， 该引出端子 1下端通过连接线 6穿过上定位套 51与 电容芯子 8连接；盖体 2被铝外壳 9的卷边 91封装在铝外壳 9内。 电容芯子 8的结构与实施例 1、 2相同。 Please refer to FIG. 10-12, which is a schematic structural diagram of Embodiment 3 of the present invention. As shown in the figure: It comprises an aluminum casing 9 in which upper and lower positioning sleeves 51, 52 are mounted, and a capacitor core 8 is disposed between the upper and lower positioning sleeves; A cover body 2 is disposed above the positioning sleeve 51, and the upper end of the cover body 2 has a lead terminal 1, and the lower end of the lead terminal 1 passes through the upper positioning sleeve 51 through the connecting line 6. The capacitor core 8 is connected; the cover 2 is enclosed in the aluminum casing 9 by the bead 91 of the aluminum casing 9. The structure of the capacitor core 8 is the same as that of the first and second embodiments.
再请参阅图 12， 它是本发明实施例 3中的具有金属化层 83的极性介质 层 81及非极性介质层 82的安全膜结构。 如图所示： 在网格区， 金属化层 83 的镀膜被窄空隙条分割成若干小面积单元， 相邻小面积单元之间有有窄形镀 膜接点 834， 其一侧边缘具有留边 84， 其另一侧边缘具有加厚区 831 , 加厚 区 831与小面积单元之间通过若干附加空隙槽分隔， 附加空隙槽之间也具有 窄形镀膜接点 833。  Referring again to Fig. 12, it is a security film structure of a polar dielectric layer 81 having a metallization layer 83 and a non-polar dielectric layer 82 in Embodiment 3 of the present invention. As shown in the figure: In the grid area, the coating of the metallization layer 83 is divided into a plurality of small-area cells by narrow gap strips, and there are narrow coating contacts 834 between adjacent small-area units, and one side edge has a margin 84 The other side edge has a thickened area 831, and the thickened area 831 is separated from the small area unit by a plurality of additional gap grooves, and the additional gap groove also has a narrow coating contact 833 therebetween.
再请参阅图 13-14， 它是本发明实施例 4的结构示意图。 如图所示： 其 结构与实施例 3基本相同， 不同之处在于： 该电容铝外壳 9底部可设置有固 定螺栓 12便于电容器的安装固定。  Referring again to Figures 13-14, it is a schematic structural view of Embodiment 4 of the present invention. As shown in the figure: The structure is basically the same as that of Embodiment 3, except that: The bottom of the capacitor aluminum casing 9 can be provided with fixing bolts 12 to facilitate the mounting and fixing of the capacitor.
再请参阅图 14， 它是本发明实施例 4中的具有金属化层 83的极性介质 层 81及非极性介质层 82的安全膜结构。 如图所示： 在 π形区， 其一侧边缘 具有留边 84， 其另一侧边缘具有加厚区 831， 加厚区 831与 π形区内侧金属 化区域 832之间通过若干附加空隙槽分隔， 附加空隙槽之间也具有窄形镀膜 接点 833; 留边 84与具有绝缘隔离间隙 836的 π形区区域之间的区域为一整 体金属化区域 832, 该金属化区域 832与具有绝缘隔离间隙 836的 π形区区 域之间也通过若干附加空隙槽分隔， 附加空隙槽之间也具有窄形镀膜接点 833。  Referring again to Figure 14, it is a security film structure of a polar dielectric layer 81 having a metallization layer 83 and a non-polar dielectric layer 82 in Embodiment 4 of the present invention. As shown in the figure: in the π-shaped region, one side edge has a retaining edge 84, the other side edge has a thickened region 831, and the thickened region 831 and the π-shaped inner metallized region 832 pass through a number of additional gap slots. Separately, the additional gap grooves also have a narrow coating contact 833; the area between the trailing edge 84 and the π-shaped region having the insulating spacer gap 836 is an integral metallized region 832, which is insulated from the insulation. The π-shaped regions of the gap 836 are also separated by a number of additional void slots, and the additional void trenches also have narrow coating contacts 833 therebetween.
再请参阅图 15， 它是本发明实施例 5中的具有金属化层 83的极性介质 层 81及非极性介质层 82的安全膜结构。 如图所示： 在 π形区， 其一侧边缘 具有留边 84， 其另一侧边缘具有加厚区 831， 加厚区 831与 π形区内侧金属 化区域 832之间通过若干附加空隙槽分隔， 附加空隙槽之间也具有窄形镀膜 接点 833 ; π形区具有绝缘隔离间隙 836，绝缘隔离间隙 836之间也具有窄形 镀膜接点 833。 Referring to Fig. 15, which is a security film structure of the polar dielectric layer 81 and the non-polar dielectric layer 82 having the metallization layer 83 in the fifth embodiment of the present invention. As shown in the figure: In the π-shaped region, one side edge has a retaining edge 84, and the other side edge has a thickened portion 831, a thickened region 831 and a metal inside the π-shaped region. The regions 832 are separated by a plurality of additional gap grooves, and the additional gap grooves also have narrow coating contacts 833; the π-shaped regions have insulating isolation gaps 836, and the insulating isolation gaps 836 also have narrow coating contacts 833 therebetween.
综上所述仅为本发明的较佳实施例而己， 并非用来限定本发明的实施范 围。 即凡依本发明申请专利范围的内容所作的等效变化与修饰， 都应为本发 明的技术范畴。  The above is only the preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, the equivalent changes and modifications made by the content of the patent application scope of the present invention should be the technical scope of the present invention.

Claims

权 利 要 求 Rights request
1、 一种高可靠的电动机起动 /间歇运行电容器， 它包括一外壳， 在外壳 内设置有电容芯子（8); 其特征在于： 电容芯子（8) 由两层聚酯薄膜极性介 质层（81、 82)卷绕而成； 该极性介质层（81、 82 )上均具有金属化层（83) ; 该电容器的间隙运行周期为： 1. A highly reliable motor starting/intermittent operation capacitor comprising a housing in which a capacitor core (8) is disposed; characterized in that: the capacitor core (8) consists of two layers of polyester film polar medium The layers (81, 82) are wound; the polar dielectric layers (81, 82) each have a metallization layer (83); the gap operation period of the capacitor is:
Figure imgf000010_0001
Figure imgf000010_0001
2、 根据权利要求 1所述的高可靠的电动机起动 /间歇运行电容器， 其特 征在于： 具有金属化层 （83) 的聚酯薄膜极性介质层 （81、 82) 的安全膜具 有网格区和 π形区； 在网格区， 金属化层 （83) 的镀膜被窄空隙条分割成若 干小面积单元， 相邻小面积单元之间有有窄形镀膜接点 （834)， 其外侧边缘 为加厚区（831 )，加厚区（831 )与小面积单元之间通过若干附加空隙槽分隔， 附加空隙槽之间也具有窄形镀膜接点 （833 ); 在 π形区， 其外侧边缘具有留 边（84)。 2. A highly reliable motor starting/intermittent operation capacitor according to claim 1 wherein: the security film of the polyester film polar dielectric layer (81, 82) having the metallization layer (83) has a grid region And a π-shaped region; in the grid region, the coating of the metallization layer (83) is divided into a plurality of small-area cells by a narrow gap strip, and a narrow coating contact (834) is arranged between the adjacent small-area units, and the outer edge is The thickened area (831), the thickened area (831) and the small area unit are separated by a plurality of additional gap grooves, and the additional gap grooves also have a narrow coating contact (833); in the π-shaped area, the outer edge has Leave the edge (84).
3、 根据权利要求 1所述的高可靠的电动机起动 /间歇运行电容器， 其特 征在于： 具有金属化层 （83) 的聚酯薄膜极性介质层 （81、 82 ) 的安全膜具 有网格区和 π形区； 在网格区， 金属化层 （83 ) 的镀膜被窄空隙条分割成若 干小面积单元， 相邻小面积单元之间有有窄形镀膜接点 （834)， 其外侧边缘 具有留边 （84); 在 π形区， 其外侧边缘具有加厚区 （831 )， 加厚区 （831 ) 与 形区内侧金属化区域（832)之间通过若干附加空隙槽分隔， 附加空隙槽 之间也具有窄形镀膜接点 （833)。 3. A highly reliable motor starting/intermittent operation capacitor according to claim 1 wherein: the security film of the polyester film polar dielectric layer (81, 82) having the metallization layer (83) has a grid region And a π-shaped region; in the grid region, the coating of the metallization layer (83) is divided into a plurality of small-area cells by a narrow gap strip, and a narrow coating contact (834) is arranged between the adjacent small-area units, and the outer edge has The edge (84); in the π-shaped region, the outer edge has a thickened area (831), and the thickened area (831) is separated from the inner metallized area (832) by a plurality of additional gap grooves, and the additional gap groove There is also a narrow coating contact (833) between them.
4、 根据权利要求 1所述的高可靠的电动机起动 /间歇运行电容器， 其特 征在于： 具有金属化层 （83 ) 的聚酯薄膜极性介质层 （81、 82) 的安全膜具 有网格区； 在网格区， 金属化层 （83) 的镀膜被窄空隙条分割成若干小面积 单元， 相邻小面积单元之间有有窄形镀膜接点 （834)， 其一侧边缘具有留边 4. A highly reliable motor starting/intermittent operation capacitor according to claim 1 wherein: the security film of the polyester film polar dielectric layer (81, 82) having the metallization layer (83) has a grid region In the grid area, the coating of the metallization layer (83) is divided into a plurality of small-area cells by narrow gap strips, and there are narrow coating contacts (834) between adjacent small-area units, and one side edge has a margin
(84), 其另一侧边缘具有加厚区 （831 )， 加厚区 （831 ) 与小面积单元之间 通过若干附加空隙槽分隔， 附加空隙槽之间也具有窄形镀膜接点 （833)。 (84), the other side edge has a thickened area (831), and the thickened area (831) is separated from the small area unit by a plurality of additional gap grooves, and the additional gap groove also has a narrow coating contact (833) .
5、 根据权利要求 1所述的高可靠的电动机起动 /间歇运行电容器， 其特 征在于： 具有金属化层 （83 ) 的聚酯薄膜极性介质层 （81、 82) 的安全膜具 有 π形区； 在 π形区， 其一侧边缘具有留边（84)， 其另一侧边缘具有加厚区 5. A highly reliable motor starting/intermittent operation capacitor according to claim 1 wherein: the security film of the polyester film polar dielectric layer (81, 82) having the metallization layer (83) has a π-shaped region In the π-shaped region, one side edge has a margin (84) and the other side edge has a thickened area
( 831 )， 加厚区 （831 ) 与 π形区内侧金属化区域 （832) 之间通过若干附加 空隙槽分隔， 附加空隙槽之间也具有窄形镀膜接点 （833 ); 留边 （84) 与具 有绝缘隔离间隙（836)的 π形区区域之间的区域为一整体金属化区域（832), 该金属化区域 （832) 与具有绝缘隔离间隙 （836) 的 π形区区域之间也通过 若干附加空隙槽分隔， 附加空隙槽之间也具有窄形镀膜接点 （833)。 (831), the thickened area (831) is separated from the inner metallized area (832) of the π-shaped area by a plurality of additional gap grooves, and the additional gap groove also has a narrow coating contact (833); the edge (84) The area between the region of the π-shaped region having the insulating isolation gap (836) is an integral metallization region (832), and the metallization region (832) is also between the π-shaped region region having the insulating isolation gap (836). Separated by a number of additional void grooves, the additional void grooves also have narrow coating contacts (833) therebetween.
6、 根据权利要求 1所述的高可靠的电动机起动 /间歇运行电容器， 其特 征在于： 具有金属化层 （83) 的聚酯薄膜极性介质层 （81、 82) 的安全膜具 有 π形区； 在 π形区， 其一侧边缘具有留边（84)， 其另一侧边缘具有加厚区 6. The highly reliable motor starting/intermittent operation capacitor of claim 1 wherein: the security film of the polyester film polar dielectric layer (81, 82) having the metallization layer (83) has a π-shaped region In the π-shaped region, one side edge has a margin (84) and the other side edge has a thickened area
(831 )， 加厚区 （831 ) 与: II形区内侧金属化区域 （832) 之间通过若干附加 空隙槽分隔， 附加空隙槽之间也具有窄形镀膜接点 （833 ); π形区具有绝缘 隔离间隙 （836)， 绝缘隔离间隙 （836)之间也具有窄形镀膜接点 （833)。 (831), the thickened area (831) and the inner metallized area (832) of the II-shaped area are separated by a plurality of additional gap grooves, and the additional gap grooves also have narrow coating contact points (833); the π-shaped area has The insulating isolation gap (836) also has a narrow coating contact (833) between the insulating isolation gaps (836).
PCT/CN2014/000485 2013-05-27 2014-05-12 Highly reliable motor starting/intermittent operation capacitor WO2014190753A1 (en)

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CN203444983U (en) * 2013-05-27 2014-02-19 上海皓月电气有限公司 Highly reliable motor starting/intermittent operation capacitor
CN203367024U (en) * 2013-05-27 2013-12-25 上海皓月电气有限公司 High-reliability starting/intermittent running capacitor for motor
WO2019109808A1 (en) * 2017-12-04 2019-06-13 上海皓月电气股份有限公司 Highly reliable motor start/intermittent run capacitor and capacitor core
CN108257780A (en) * 2017-12-04 2018-07-06 上海皓月电气股份有限公司 Highly reliable motor starting/intermittent duty capacitor and capacitor body

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