High-voltage high-power box type capacitor

Abstract

The utility model provides a high-voltage high-power box type capacitor, which comprises a PBT (polybutylene terephthalate) flame-retardant plastic shell, a capacitor core and pins, the capacitor core is arranged in the PBT flame-retardant plastic shell, the two pins are led out from the lower side of the capacitor core, a plurality of buffer connecting blocks are arranged between the capacitor core and the PBT flame-retardant plastic shell, and the buffer connecting blocks are connected with the PBT flame-retardant plastic shell. Other areas between the capacitor core and the PBT flame-retardant plastic shell are packaged by auxiliary layers, a plurality of mounting seats are arranged on the left side and the right side outside the PBT flame-retardant plastic shell, the pins penetrate through two corresponding through holes in the PBT flame-retardant plastic shell and are arranged on the outer side of the PBT flame-retardant plastic shell, an annular clamping groove is formed in the periphery of the outer side of each through hole, the pins are inserted into the sleeves, and the sleeves are sleeved with the mounting seats. And the upper end of the connecting rod is buckled on the annular clamping groove. The beneficial effects of the utility model are that the plurality of buffer connecting blocks are arranged between the capacitor core and the PBT flame-retardant plastic housing, so that the damage of impact force to the capacitor core can be reduced; and the arranged sleeve can effectively prevent humid air from corroding the pins or adhering to the pins, so that the service life of the LED lamp is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to capacitor technical field, especially a high voltage high -power box type capacitor. BACKGROUND

[0002] Capacitor is one of electronic components that are used in large quantities in electronic equipment, and is widely used in direct current isolation, coupling, bypass, filtering, tuning loop, energy conversion, control circuit and other aspects. At present, it is found that the internal parts of the box type capacitor are easy to be affected by the environment and appear damp, and the pins are easy to stick with impurities when not in use, and the inner core is easy to be damaged when the outside shakes or collides, reducing the service life. UTILITY MODEL CONTENTS

[0003] Based on the problems in the above background, the utility model aims to provide a high voltage high -power box type capacitor, which enhances the protection of the inner core, is convenient to install and disassemble, reduces the corrosion of the pins and the sticking of impurities, and prolongs the service life.

[0004] The technical scheme of the utility model is: a high voltage high -power box type capacitor, comprising a PBT flame-retardant plastic shell, a capacitor core and a pin, the PBT flame-retardant plastic shell is internally provided with the capacitor core, and two pins are led out from the lower side of the capacitor core, a plurality of buffer connecting blocks are arranged between the capacitor core and the PBT flame-retardant plastic shell, and the other areas between the capacitor core and the PBT flame-retardant plastic shell are packaged by an auxiliary layer, the auxiliary layer comprises a moisture absorption layer and a sealing layer, and the sealing layer is arranged in close contact with the capacitor core,

[0005] A plurality of mounting seats are arranged on the left and right sides of the PBT flame-retardant plastic shell, mounting holes are arranged on the mounting seats, the pin passes through the corresponding two perforations on the PBT flame-retardant plastic shell and is arranged on the outer side of the PBT flame-retardant plastic shell, an annular clamping groove is arranged on the outer side of each perforation, the pin is inserted into the sleeve, and the upper end of the pin is clamped on the annular clamping groove, the capacitor core comprises two layers of double-sided metallized film and two layers of film, one layer of double-sided metallized film, one layer of film, another layer of double-sided metallized film and another layer of film are sequentially stacked and wound, and the film is a polypropylene film.

[0006] Further, the material of the pin is tinned copper clad steel.

[0007] Further, the moisture absorption layer is a corrosion-resistant coating made of epoxy resin added with calcium chloride.

[0008] Further, the sealing layer is an epoxy resin layer.

[0009] Further, the PBT flame-retardant plastic shell is provided with a plurality of heat dissipation holes with filter screens on the left and right sides.

[0010] The utility model has the advantages and positive effects that: through the above technical scheme, a plurality of buffer connecting blocks are arranged between the capacitor core and the PBT flame-retardant plastic shell, which can reduce the damage of impact force to the capacitor core; the sleeve can effectively prevent humid air from corroding the pins or sticking to the pins, thereby prolonging the service life of the capacitor. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the whole structure schematic diagram of the utility model.

[0012] Figure 2 It is the side view of PBT flame-retardant plastic shell.

[0013] In the drawing:

[0014] 1, PBT flame-retardant plastic shell 2, capacitor core 3, pin

[0015] 4, buffer connecting block 5, moisture absorption layer 6, sealing layer

[0016] 7, mounting seat 8, sleeve 9, heat dissipation hole DETAILED DESCRIPTION

[0017] As shown in Figure 1 , 2 , the technical scheme of the utility model is: a high-voltage and high-power box type capacitor, which comprises a PBT flame-retardant plastic shell 1, a capacitor core 2 and a pin 3, the PBT flame-retardant plastic shell 1 is internally provided with the capacitor core 2, and the capacitor core 2 is provided with two pins 3 at the lower side, a plurality of buffer connecting blocks 4 are arranged between the capacitor core 2 and the PBT flame-retardant plastic shell, the plurality of buffer connecting blocks 4 effectively prevent the capacitor core from being damaged by impact force, increase the protection, and the other areas between the capacitor core 2 and the PBT flame-retardant plastic shell 1 are encapsulated by an auxiliary layer, the auxiliary layer comprises a moisture absorption layer 5 and a sealing layer 6, and the sealing layer 6 is attached to the capacitor core 2, so that the moisture entering the inside of the PBT flame-retardant plastic shell 1 can be absorbed, a plurality of mounting seats 7 are arranged on the left and right sides of the PBT flame-retardant plastic shell 1, mounting holes are arranged on the mounting seats 7, the pins 3 pass through two corresponding holes in the PBT flame-retardant plastic shell 1 and are arranged on the outer side of the PBT flame-retardant plastic shell 1, annular clamping grooves are arranged on the outer side of each hole, a sleeve 8 is inserted into the pins 3, and the upper end of the sleeve 8 is clamped on the annular clamping groove and covers the pins 3, thereby effectively preventing humid air from corroding the pins or sticking to the pins, when the box type capacitor is mounted, the sleeve can be pulled down, the capacitor core 2 comprises two layers of double-sided metallized films and two layers of films, one layer of double-sided metallized film, one layer of film, another layer of double-sided metallized film and another layer of film are sequentially stacked and wound, and the film is a polypropylene film.

[0018] In the embodiment, the pin 3 is made of tinned copper clad steel.

[0019] In the embodiment, the moisture absorption layer 5 is a corrosion-resistant coating made of epoxy resin with calcium chloride added.

[0020] In the embodiment, the sealing layer 6 is an epoxy resin layer.

[0021] In the embodiment, the PBT flame-retardant plastic shell 1 is provided with a plurality of heat dissipation holes 9 with filter screens on the left and right sides.

[0022] The working process and principle of the embodiment are as follows: the capacitor is fixed through the mounting seat 7, and the mounting and dismounting are convenient; the sleeve 8 is removed to connect the pin 3. The plurality of buffer connecting blocks 4 provided between the capacitor core 2 and the PBT flame-retardant plastic shell 1 can reduce the damage of the impact force to the core of the device body, and improve the service life.

[0023] The above has described one embodiment of the utility model in detail, but the content described can only be the preferred embodiment of the utility model, and cannot be considered as limiting the implementation range of the utility model. Any equivalent change and improvement within the application range of the utility model should still belong to the patent coverage range of the utility model.

Claims

1. A high-voltage and high-power box capacitor, comprising a PBT flame-retardant plastic shell, a capacitor core and pins, the capacitor core being arranged in the PBT flame-retardant plastic shell, and two pins being led out from the lower side of the capacitor core, characterized in that: a plurality of buffer connecting blocks are arranged between the capacitor core and the PBT flame-retardant plastic shell, and an auxiliary layer is arranged in other areas between the capacitor core and the PBT flame-retardant plastic shell, the auxiliary layer comprising a moisture absorption layer and a sealing layer, and the sealing layer is arranged in contact with the capacitor core; the moisture absorption layer is a corrosion-resistant coating made of epoxy resin added with calcium chloride; the sealing layer is an epoxy resin layer; a plurality of mounting seats are arranged on the left and right sides of the PBT flame-retardant plastic shell, mounting holes are arranged on the mounting seats, the pins pass through two corresponding through holes on the PBT flame-retardant plastic shell and are arranged on the outer side of the PBT flame-retardant plastic shell, an annular clamping groove is arranged on the outer side of each through hole, and the pins are inserted into the sleeve and buckled on the annular clamping groove on the upper end of the sleeve; the capacitor core comprises two layers of double-sided metallized films and two layers of films, one layer of double-sided metallized film, one layer of film, another layer of double-sided metallized film and another layer of film are sequentially stacked and wound to form the capacitor core, and the film is a polypropylene film; the pins are made of tinned copper clad steel; and the left and right sides of the PBT flame-retardant plastic shell are each provided with a plurality of heat dissipation holes with filter screens. ​ ​ ​ ​ ​ 2. The high-voltage, high-power box capacitor of claim 1, wherein: ​ 3. The high-voltage, high-power box capacitor of claim 1, wherein: ​

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