CN213583519U - Double-sided metalized polypropylene IGBT absorption capacitor - Google Patents

Abstract

The utility model relates to a condenser technical field especially relates to a two-sided metallization polypropylene IGBT absorption capacitor, including separation sleeve, conducting strip, ripple groove, oversheath, micropore, ventilated membrane and electric capacity core, the top and the bottom of separation sleeve respectively with two sets of conducting strip fixed connection, the ripple groove has all been seted up to the both sides of conducting strip, the oversheath cover is established at the surface of separation sleeve, the micropore has all been seted up to the both sides of oversheath, the quantity of ventilated membrane is two, and two ventilated membranes are located the both sides of oversheath inner wall respectively, the electric capacity core is located the inside of separation sleeve. The utility model discloses reached the purpose that improves two-sided metallization polypropylene IGBT absorption capacitor self heat dispersion, can dispel the heat to the produced heat accumulation phenomenon of condenser long-term operation, improved the heat dispersion of condenser, can bear very big high frequency current, stability is good, and the reliability is high, long service life.

Description

Double-sided metalized polypropylene IGBT absorption capacitor

Technical Field

The utility model relates to a condenser technical field especially relates to a two-sided metallization polypropylene IGBT absorption capacitor.

Background

With the rapid development of the electronic industry and information technology, capacitors become indispensable basic elements of electronic complete machines, electric appliances and power equipment, common metalized thin film capacitors mainly adopt a metal coating on one surface of a dielectric film as an electrode, and the current resistance of the common metalized thin film capacitors is very low due to the very thin existing metal coating, so that the application of the common metalized thin film capacitors in high-frequency, high-voltage and pulsed large-current working occasions (such as high-frequency switching power supplies and the like) is limited.

The double-sided metalized polypropylene IGBT absorption capacitor has the advantages of large current, low loss, low high-frequency loss, excellent electrical property, small size and the like, however, the double-sided metalized polypropylene IGBT absorption capacitor has poor heat dissipation effect on a capacitor core, so that the phenomenon of heat accumulation easily occurs in long-term operation of the capacitor, the damage rate is increased, and the service life of the product is shorter.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a two-sided metallization polypropylene IGBT absorbs condenser has reached the purpose that improves two-sided metallization polypropylene IGBT and absorbs condenser self heat dispersion, can pile up the phenomenon to the produced heat of condenser long-term operation and dispel the heat, can bear very big high frequency current, and stability is good, and the reliability is high, long service life.

(II) technical scheme

In order to realize the technical problem, the utility model provides a following technical scheme: the utility model provides a two-sided metallization polypropylene IGBT absorption capacitor, includes uide bushing, conducting strip, ripple groove, oversheath, micropore, ventilated membrane and capacitor core, the top and the bottom of uide bushing respectively with two sets of conducting strip fixed connection, the ripple groove has all been seted up to the both sides of conducting strip, the surface at the uide bushing is established to the oversheath cover, the micropore has all been seted up to the both sides of oversheath, the quantity of ventilated membrane is two, and two ventilated membranes are located the both sides of oversheath inner wall respectively, the capacitor core is located the inside of uide bushing.

Furthermore, the isolation sleeve is made of ceramic fibers, seven heat conducting fins are fixed on the isolation sleeve in a group, and the tail ends of the heat conducting fins are lapped with the inner wall of the outer casing.

Furthermore, the shape of the heat conducting sheet and the corrugated groove after being combined is an S curve, the aperture of each micropore is one micron at zero, and the breathable film is arranged corresponding to the micropore.

Further, the outer surface cover of capacitor core is equipped with two-sided metal film, the quantity of two-sided metal film is two-layer, the side of capacitor core is provided with the metal contact layer, the quantity of metal contact layer is two, and two metal contact layers are located the both sides of capacitor core respectively.

Further, the side of metal contact layer is provided with the stitch, the quantity of stitch is two, and two stitches are fixed respectively on the one side that two metal contact layers kept away from each other mutually.

Furthermore, a positioning hole is formed in the pin, and the aperture of the positioning hole is one zero millimeter.

(III) advantageous effects

The utility model provides a two-sided metallization polypropylene IGBT absorbs condenser possesses following beneficial effect:

1. the utility model discloses a set up ceramic fiber structure' S separation sleeve at the outside cover of condenser core, cooperation conducting strip and the combination of ripple groove form the heat radiation structure of S curve form, set up the micropore corresponding with conducting strip transverse path on the protecting crust simultaneously, the produced heat of condenser core takes place heat transfer by the conducting strip this moment, and disperse to the outside of protecting crust by the micropore, cooperate the corresponding setting of ventilated membrane simultaneously, thereby avoid the entering of external dust, consequently, reached the purpose of improving two-sided metallization polypropylene IGBT absorption capacitor self heat dispersion, can dispel the heat to the heat accumulation phenomenon that the produced of condenser long-term operation, and outer protecting crust and fire-retardant epoxy embedment solidification; the composite material has the characteristics of small loss, low internal temperature rise, large insulation resistance, high temperature resistance, self-healing property, frequency characteristic and flame retardant property; can bear large high-frequency current, and has good stability, high reliability and long service life.

2. The utility model discloses because the setting of two-sided metallic film and metal contact layer, through the adoption of metallization polypropylene film, can make the condenser have excellent electrical property, high stability and long-life, can satisfy the application of various differences, can provide bigger electric capacity in less packaging size, high dielectric constant has, high dielectric strength, self-healing characteristics and good temperature stability, the electric capacity that utilizes the metallization polypropylene film to make then has low dielectric loss, high insulating impedance, low dielectric absorption and high dielectric strength characteristic.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

fig. 2 is an exploded view of the capacitor of the present invention;

fig. 3 is a schematic structural view of the structural heat-conducting fin of the present invention.

In the figure: 1. an isolation sleeve; 2. a heat conductive sheet; 3. a corrugated groove; 4. an outer protective shell; 5. micropores; 6. a gas permeable membrane; 7. a capacitor core; 8. a double-sided metal film; 9. a metal contact layer; 10. a stitch; 11. and (7) positioning the holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a double-sided metalized polypropylene IGBT absorption capacitor comprises an isolation sleeve 1, heat conducting fins 2, corrugated grooves 3, an outer casing 4, micropores 5, breathable films 6 and a capacitor core 7, wherein the top and the bottom of the isolation sleeve 1 are respectively fixedly connected with two groups of heat conducting fins 2, the corrugated grooves 3 are respectively arranged on two sides of each heat conducting fin 2, the outer casing 4 is sleeved on the outer surface of the isolation sleeve 1, the micropores 5 are respectively arranged on two sides of the outer casing 4, the number of the breathable films 6 is two, the two breathable films 6 are respectively arranged on two sides of the inner wall of the outer casing 4, the capacitor core 7 is arranged in the isolation sleeve 1, the isolation sleeve 1 with a ceramic fiber structure is sleeved outside the capacitor core 7, an S-curve-shaped heat dissipation structure is formed by combining the heat conducting fins 2 and the corrugated grooves 3, the micropores 5 corresponding to the transverse path of the heat conducting fins 2 are arranged on the outer casing 4, and heat generated by the capacitor core 7 is transferred by the heat conducting, the heat radiation of the double-sided metalized polypropylene IGBT absorption capacitor is improved, the heat radiation can be performed aiming at the heat accumulation phenomenon generated by the long-term operation of the capacitor, and the outer protective shell and the flame-retardant epoxy resin are encapsulated and cured; the composite material has the characteristics of small loss, low internal temperature rise, large insulation resistance, high temperature resistance, self-healing property, frequency characteristic and flame retardant property; can bear large high-frequency current, and has good stability, high reliability and long service life.

The isolating sleeve 1 is made of ceramic fiber, seven heat conducting fins 2 are fixed on the isolating sleeve 1 as a group, the tail ends of the heat conducting fins 2 are lapped with the inner wall of the outer protecting shell 4, the shape of the combined heat conducting fins 2 and the corrugated groove 3 is S-curve shape, the aperture of the micropores 5 is zero point and one micron, the breathable film 6 is arranged corresponding to the micropores 5, the outer surface of the capacitor core 7 is sleeved with double-sided metal films 8, the number of the double-sided metal films 8 is two, the side surface of the capacitor core 7 is provided with two metal contact layers 9, the number of the metal contact layers 9 is two, the two metal contact layers 9 are respectively positioned at two sides of the capacitor core 7, due to the arrangement of the double-sided metal films 8 and the metal contact layers 9, the capacitor can have excellent electrical characteristics, high stability and long service life by adopting the metallized polypropylene film, can meet various applications, and can provide larger capacitance in smaller packaging size, the capacitor has the characteristics of high dielectric constant, high insulating strength, self-restoration and good temperature stability, the capacitor manufactured by utilizing the metallized polypropylene film has the characteristics of low dielectric loss, high insulating impedance, low dielectric absorption and high insulating strength, the side surfaces of the metal contact layers 9 are provided with two pins 10, the number of the pins 10 is two, the two pins 10 are respectively fixed on one side of the two metal contact layers 9 which are away from each other, the pins 10 are provided with positioning holes 11, and the aperture of the positioning holes 11 is one-zero-point millimeter.

In the using process, the isolating sleeve 1 with a ceramic fiber structure is sleeved outside the capacitor core 7, the heat conducting sheet 2 and the corrugated groove 3 are combined to form an S-curve-shaped heat dissipation structure, the outer protective shell 4 is provided with the micropores 5 corresponding to the transverse path of the heat conducting sheet 2, heat generated by the capacitor core 7 is transferred by the heat conducting sheet 2 and is dissipated to the outside of the outer protective shell 4 from the micropores 5, and meanwhile, the corresponding arrangement of the breathable film 6 is matched to avoid external dust from entering, so that the purpose of improving the self heat dissipation performance of the double-sided metalized polypropylene IGBT absorption capacitor is achieved, heat dissipation can be performed aiming at the heat accumulation phenomenon generated by long-term operation of the capacitor, and the outer protective shell and the flame-retardant epoxy resin are encapsulated and cured; the composite material has the characteristics of small loss, low internal temperature rise, large insulation resistance, high temperature resistance, self-healing property, frequency characteristic and flame retardant property; can bear large high-frequency current, and has good stability, high reliability and long service life.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a two-sided metallization polypropylene IGBT absorption capacitor, includes spacer sleeve (1), conducting strip (2), ripple groove (3), outer jacket (4), micropore (5), ventilated membrane (6) and condenser core (7), its characterized in that: the top and the bottom of isolation sleeve (1) respectively with two sets of conducting strip (2) fixed connection, corrugated groove (3) have all been seted up to the both sides of conducting strip (2), the surface at isolation sleeve (1) is established to oversheath (4) cover, micropore (5) have all been seted up to the both sides of oversheath (4), the quantity of ventilated membrane (6) is two, and two ventilated membranes (6) are located the both sides of oversheath (4) inner wall respectively, condenser core (7) are located the inside of isolation sleeve (1).

2. The double-sided metalized polypropylene IGBT snubber capacitor of claim 1, wherein: the isolating sleeve (1) is made of ceramic fibers, seven heat conducting fins (2) are fixed on the isolating sleeve (1) as a group, and the tail ends of the heat conducting fins (2) are in lap joint with the inner wall of the outer protective shell (4).

3. The double-sided metalized polypropylene IGBT snubber capacitor of claim 1, wherein: the shape of the heat conducting sheet (2) and the corrugated groove (3) after combination is an S curve, the aperture of each micropore (5) is one micron at zero, and the breathable film (6) and the micropores (5) are arranged correspondingly.

4. The double-sided metalized polypropylene IGBT snubber capacitor of claim 1, wherein: the capacitor is characterized in that a double-sided metal film (8) is sleeved on the outer surface of the capacitor core (7), the number of the double-sided metal film (8) is two, metal contact layers (9) are arranged on the side faces of the capacitor core (7), the number of the metal contact layers (9) is two, and the two metal contact layers (9) are respectively located on two sides of the capacitor core (7).

5. The double-sided metalized polypropylene IGBT snubber capacitor of claim 4, wherein: the side of metal contact layer (9) is provided with stitch (10), the quantity of stitch (10) is two, and two stitches (10) are fixed respectively on the one side that two metal contact layers (9) kept away from each other mutually.

6. The double-sided metalized polypropylene IGBT snubber capacitor of claim 5, wherein: a positioning hole (11) is formed in the pin (10), and the aperture of the positioning hole (11) is one zero millimeter.

Images