CN212783080U

CN212783080U - Low-noise vehicle-mounted power capacitor

Info

Publication number: CN212783080U
Application number: CN202021535440.4U
Authority: CN
Inventors: 涂汉娜
Original assignee: Shenzhen Eurada Electronics Co ltd
Current assignee: Shenzhen Eurada Electronics Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-03-23
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a low-noise vehicle-mounted power capacitor, which comprises a capacitor component, a shell and a silencing mechanism, wherein the shell is arranged inside the silencing mechanism; the silencing mechanism comprises two sound insulation cavities, two sound absorption covers and an energy dissipation plate, the two sound insulation cavities are respectively connected to two ends of the capacitor component, two ends of each sound absorption cover are respectively connected with two ends of each sound insulation cover, and the energy dissipation plate is attached to the capacitor component; the energy dissipation board includes acoustic celotex board and the oil reservoir that sets up in proper order, and the laminating of oil reservoir and capacitance components and parts has solved the great problem of on-vehicle capacitor noise among the prior art.

Description

Low-noise vehicle-mounted power capacitor

Technical Field

The utility model relates to an on-vehicle condenser, concretely relates to on-vehicle power capacitor of low noise.

Background

The capacitor is formed by two conductors which are close to each other and a layer of non-conductive insulating medium is sandwiched between the two conductors. When a voltage is applied across the two plates of the capacitor, the capacitor stores charge. The capacitance of the capacitor is numerically equal to the ratio of the amount of charge on one conductive plate to the voltage between the two plates. The basic unit of capacitance of a capacitor is farad (F). The capacitor element is generally denoted by letter C in the circuit diagram.

Capacitors play an important role in circuits such as tuning, bypassing, coupling, filtering, etc. The tuning circuit of the transistor radio is used, and the coupling circuit, the bypass circuit and the like of the color television are also used. With the change of electronic information technology, the update speed of digital electronic products is faster and faster, and the production and sales volume of consumer electronic products such as flat panel televisions (LCDs and PDPs), notebook computers, and digital cameras is continuously increasing, which drives the growth of capacitor industry.

The conventional vehicle-mounted capacitor generates large noise during operation, and further causes discomfort to people in a vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model provides an on-vehicle power capacitor of low noise has solved the great problem of on-vehicle capacitor noise among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a low-noise vehicle-mounted power capacitor comprises a capacitor component, a shell and a silencing mechanism, wherein the shell is arranged inside the silencing mechanism;

the noise reduction mechanism comprises two sound insulation cavities, two sound absorption covers and two energy dissipation plates, the two sound insulation cavities are respectively connected to two ends of the capacitor component, two ends of each sound absorption cover are respectively connected with two ends of each sound insulation cover, and the energy dissipation plates are attached to the capacitor component;

the energy dissipation plate comprises a sound insulation plate and an oil layer which are sequentially arranged, and the oil layer is attached to the capacitor element.

Preferably, the sound-proof housing includes shell and the sound-absorbing layer that sets gradually, just the sound-absorbing layer with the laminating of capacitance components and parts.

Preferably, the number of the energy dissipation plates is two, and the two energy dissipation plates are respectively attached to two ends of the capacitor component.

Preferably, the sound insulation board is provided with a plurality of sound absorption holes, the aperture of each sound absorption hole is 1mm, and the distance between the two sound absorption holes is 4-5 mm.

Preferably, the sound absorption material adopted in the sound absorption layer is foam plastic.

Preferably, the cross section of the capacitor element is rectangular, the cross section of the energy dissipation plate is rectangular, and the capacitor element and the energy dissipation plate are matched.

Preferably, two capacitor electrodes are arranged on the capacitor component, penetrate through the sound-proof housing and the shell and extend to the outer side of the shell.

The utility model has the advantages that: noise elimination that produces electric capacity components and parts work through the amortization mechanism that sets up in electric capacity components and parts inside, the sound insulation chamber that the sound-proof housing that sets up at electric capacity components and parts both ends formed carries out the separation to the noise, and the absorbing housing that sets up at two sound-proof housing both ends absorbs a noise, absorbs the resonance that electric capacity components and parts work produced through the energy dissipation board that sets up at electric capacity components and parts both ends to the great problem of vehicle-mounted capacitor noise among the prior art has been solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a low-noise vehicle-mounted power capacitor of the present invention;

FIG. 2 is a schematic diagram of the capacitor component and energy dissipation plate structure of the present invention;

figure 3 is a schematic diagram of the energy dissipation plate structure of the present invention;

fig. 4 is a schematic structural view of the sound-proof housing of the present invention.

In the figure: 1. a capacitor element; 2. a capacitive electrode; 3. a sound-insulating chamber; 4. a housing; 5. a sound absorbing cover; 6. an energy dissipation plate; 7. a sound insulating board; 8. an oil layer; 9. a sound absorption hole; 10. a housing; 11. a sound absorbing layer; 12. and a sound-proof shield.

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. 1-4, a low-noise vehicle-mounted power capacitor comprises a capacitor component 1, a shell 4 and a silencing mechanism, wherein the shell 4 is arranged inside the silencing mechanism, the silencing mechanism is arranged inside the capacitor component 1, the shell 4 is responsible for protecting the whole device, and the silencing mechanism is responsible for eliminating noise generated by the capacitor component 1 during operation;

the noise reduction mechanism comprises two sound insulation cavities 3, two sound absorption covers 5 and two energy dissipation plates 6, the two sound absorption covers 5 and the two sound insulation cavities 3 are respectively connected to two ends of a capacitor component 1, two ends of each sound absorption cover 5 are respectively connected with two ends of each sound insulation cover 12, the energy dissipation plates 6 are attached to the capacitor component 1, the sound insulation covers 12 arranged at two ends of the capacitor component 1 isolate generated noise from the outside, the sound absorption covers 5 arranged at two ends of each sound absorption cover 12 absorb the noise generated by the capacitor component 1, and the energy dissipation plates 6 eliminate resonance generated when the capacitor component 1 works and reduce the noise;

energy dissipation board 6 is including acoustic celotex board 7 and the oil reservoir 8 that sets up in proper order, and oil reservoir 8 and the laminating of electric capacity components and parts 1, and the one deck oil reservoir 8 of laminating can make acoustic celotex board 7 eliminate resonance better on the acoustic celotex board 7.

Wherein, sound-proof housing 12 is including shell 10 and the sound absorbing layer 11 that sets gradually, and sound absorbing layer 11 and capacitor components and parts 1 laminating, and sound absorbing layer 11 laminating capacitor components and parts 1 can be effectively with noise absorption.

Wherein, energy dissipation board 6 quantity is two, and two energy dissipation boards 6 laminate the both ends of electric capacity components and parts 1 respectively, and two energy dissipation board 6 laminates and can eliminate the resonance that electric capacity components and parts both ends produced simultaneously at electric capacity components and parts 1 both ends.

Wherein, the acoustic celotex board 7 is provided with a plurality of sound-absorbing holes 9, the aperture of each sound-absorbing hole 9 is 1mm, the distance between two sound-absorbing holes 9 is 4-5mm, and the sound-absorbing holes 9 can effectively eliminate resonance so as to reduce noise.

The sound absorbing material used in the sound absorbing layer 11 is foam plastic, and a plurality of fine gaps exist in the foam plastic, so that a part of noise generated by the operation of the capacitor component 1 can be effectively absorbed.

Wherein, 1 cross-section of electric capacity components and parts is the rectangle, and 6 cross-sections of energy dissipation board are the rectangle, and electric capacity components and parts 1 and the two phase-matchs of energy dissipation board 6, the two sectional areas are the same and make energy dissipation board 6 can laminate electric capacity components and parts 1 better, and then eliminate resonance.

Wherein, be equipped with two capacitance electrode 2 on the capacitance component 1, two capacitance electrode 2 pass sound-proof housing 12 and casing 4 to extend to the casing 4 outside, two capacitance electrode 2 are connectable on the wire when the installation electric capacity.

The utility model discloses theory of operation and use flow: when the capacitor element 1 generates noise during use, the noise generated by the sound-proof covers 12 arranged at the two ends of the capacitor element 1 is isolated from the outside, the sound-absorbing covers 5 arranged at the two ends of the two sound-proof covers 12 absorb the generated capacitor element 1, the energy dissipation plate 6 eliminates the resonance generated when the capacitor element 1 works and reduces the noise, the energy dissipation plate 6 comprises sound-proof plates 7 and oil layers 8 which are sequentially arranged, the oil layers 8 are attached to the capacitor element 1, the sound-proof plates 7 can better resonate and eliminate the sound-proof plates 7 by attaching one layer of oil layers 8 to the sound-proof plates 7, a plurality of sound-absorbing holes 9 are formed in the sound-proof plates 7, the aperture of each sound-absorbing hole 9 is 1mm, the distance between each sound-absorbing hole 9 is 4-5mm, the sound-absorbing holes 9 can effectively eliminate the resonance and reduce the noise, and the problem that the noise.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A low-noise vehicle-mounted power capacitor is characterized by comprising a capacitor component (1), a shell (4) and a silencing mechanism, wherein the shell (4) is arranged in the silencing mechanism, and the silencing mechanism is arranged in the capacitor component (1);

the noise reduction mechanism comprises two sound insulation cavities (3), two sound absorption covers (5) and an energy dissipation plate (6), the two sound absorption covers (5) and the two sound insulation cavities (3) are respectively connected to two ends of the capacitor component (1), two ends of the two sound absorption covers (5) are respectively connected with two ends of the two sound insulation covers (12), and the energy dissipation plate (6) is attached to the capacitor component (1);

the energy dissipation plate (6) comprises a sound insulation plate (7) and an oil layer (8) which are sequentially arranged, and the oil layer (8) is attached to the capacitor component (1).

2. A low-noise vehicular power capacitor according to claim 1, wherein the soundproof cover (12) includes a housing (10) and a sound absorption layer (11) which are sequentially arranged, and the sound absorption layer (11) is attached to the capacitor element (1).

3. A low-noise vehicle-mounted power capacitor as claimed in claim 1, wherein the number of the energy dissipation plates (6) is two, and the two energy dissipation plates (6) are respectively attached to two ends of the capacitor element (1).

4. The vehicle-mounted low-noise power capacitor as claimed in claim 1, wherein the sound-insulating plate (7) is provided with a plurality of sound-absorbing holes (9), the aperture of each sound-absorbing hole (9) is 1mm, and the distance between the two sound-absorbing holes (9) is 4-5 mm.

5. A low noise vehicle mounted power capacitor as claimed in claim 2, characterized in that the sound absorbing material used inside the sound absorbing layer (11) is foam plastic.

6. A low-noise vehicle-mounted power capacitor as claimed in claim 1, characterized in that the cross section of the capacitor element (1) is rectangular, the cross section of the energy dissipation plate (6) is rectangular, and the capacitor element (1) and the energy dissipation plate (6) are matched.

7. A low-noise vehicular power capacitor according to claim 1, wherein two capacitor electrodes (2) are disposed on the capacitor element (1), and the two capacitor electrodes (2) pass through the soundproof cover (12) and the housing (4) and extend to the outside of the housing (4).