CN113421774B - Clamp for manufacturing capacitor from graphene suspension film - Google Patents

Abstract

A clamp for making a graphene suspension film into a capacitor, the present invention relates to a clamp for making a graphene suspension film into a capacitor, in order to solve the problem that the distance between the two pole plates of the existing capacitor cannot be as small as possible, which will affect the capacitance of the made capacitor. The size of the capacitance; the contact resistance of the graphene suspension film and the lead wire will affect the output of the charge when the capacitance changes; the thickness of the lead wire will increase the distance between the two pole plates of the capacitor, and the problem that the two pole plates cannot be guaranteed to be parallel, the upper end cap and the lower end cap Fixed installation, the negative plate is installed in the lower end cover, the silicon wafer attached with the graphene suspension film is installed in the first groove of the lower end cover, and the graphene suspension film side faces the bottom surface of the first groove, and the sheet is installed in the graphite Between the graphene suspension film and the bottom surface of the first groove, the positive lead wire is connected to the graphene suspension film, and a flexible material is installed between the silicon wafer and the upper end cap. This fixture is used when the graphene suspension film is made into a capacitor positive plate Fixing it belongs to the field of fixtures.

Description

A jig for making graphene suspension film into capacitor

technical field

The invention relates to a clamp for making a graphene suspension film into a capacitor, and belongs to the field of clamps.

Background technique

As the properties of graphene are explored by the majority of scientific researchers, graphene has more and more uses. Among them, the use of graphene films with excellent mechanical and electrical properties to make capacitive pickups has become one of the research hotspots.

At present, the preparation of graphene suspension film requires a carrier. Generally speaking, the carrier is a silicon wafer. After drilling holes on the silicon wafer, a graphene film is prepared in the perforated part to form a suspension film. If you want to use such a graphene suspension film To make a capacitive pickup, it is necessary to make a silicon wafer with a graphene suspension film into a capacitor positive plate, especially to design a positive lead wire of the positive plate. As well as making a capacitor metal lower plate, and making an insulating gasket to separate the graphene suspension film from the negative plate, the difficult problems encountered at present are:

1. The radius of the graphene suspension film is very small, resulting in a small area of the positive plate of the capacitor, and the resulting capacitance value is very small. In order to increase the capacitance, the diameter of the graphene suspension film can be increased at present, or the gap between the two electrode plates of the capacitor can be reduced. distance, but the diameter of the graphene suspension film cannot be increased indefinitely, so in the current literature, the distance between the two polar plates of the capacitor is reduced to a minimum, which is 8 microns, and the distance between the two polar plates of the capacitor is smaller. It is easy to cause a short circuit between the two pole plates due to the vibration of the suspended membrane. Since 8 microns is relatively small, in order to prevent the two pole plates of the capacitor from being broken down by the electric field, the DC bias voltage that can withstand between the two pole plates will be relatively small, which directly affects the output. The amount of charge and the capacitance of the capacitor made.

2. The graphene suspension film is the positive electrode of the capacitor. The contact resistance between the suspension film and the positive electrode lead-out line is very large, which affects the output of the charge generated when the capacitance changes.

3. Connect the positive lead wire in the traditional way. The positive lead wire generally has a certain thickness, which will cause the distance between the two polar plates of the capacitor to be too large, and the parallel between the two polar plates cannot be guaranteed.

In summary, the following problems exist:

1. The distance between the two electrode plates of the existing capacitor cannot be as small as possible, which will affect the capacitance value of the produced capacitor.

2. The graphene suspension film is used as the positive electrode of the capacitor. The contact resistance between the graphene suspension film and the positive electrode lead wire is very large, which will affect the output of the charge when the capacitance changes.

3. Connecting the positive lead wire in the traditional way will cause the distance between the two polar plates of the capacitor to be too large due to the certain thickness of the positive lead wire, and the parallel between the two polar plates cannot be guaranteed.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems, the present invention further provides a clamp for making the graphene suspension film into a capacitor.

The technical scheme adopted by the present invention is:

It includes an upper end cap, a lower end cap, a negative electrode plate, a thin sheet and a positive electrode lead wire. The upper end cap and the lower end cap are fixedly installed, the negative electrode plate is installed in the lower end cap, and the upper end cap includes a plate body and a boss. The center position of the lower surface of the plate body is processed There is a boss, the center of the plate body is machined with a first through hole, the lower end cover is a cylinder, the center of the upper surface of the cylinder is machined with a first groove, and the lower surface of the cylinder is machined with a second through hole and Two first positive holes, the boss of the upper end cover is installed in the first groove of the lower end cover, the graphene suspension film is attached to the silicon wafer, and the silicon wafer with the graphene suspension film attached is installed in the first concave of the lower end cover. Inside the groove, and the silicon wafer attached with the graphene suspension film is located between the boss of the upper end cover and the inner bottom end face of the first groove, and the side of the silicon wafer with the graphene suspension film attached faces the first concave in the lower end cover. On the bottom end face of the groove, the upper surface of the sheet is machined with a second groove and two second positive electrode holes, the second groove is located at the center of the sheet, and the two second positive electrode holes are located on one side of the second groove, The sheet is fixedly installed on the inner bottom end face of the first groove of the lower end cover, and the sheet is located between the graphene suspension film and the inner bottom end face of the first groove, the upper surface of the sheet is arranged opposite the graphene suspension film, and the sheet is arranged opposite to the graphene suspension film. The lower surface coincides with the inner bottom end face of the first groove, one end of each positive electrode lead wire is fixedly connected with the graphene suspension film through each first positive electrode hole on the lower surface of the lower end cover, and each positive electrode lead wire is Vertically arranged with the graphene suspension film, the other end of each positive lead wire is exposed 10mm from the lower surface of the lower end cap, and a flexible material is installed between the silicon wafer and the upper end cap.

Compared with the prior art, the present invention has the following effects:

1. The clamp is installed with a thin sheet on the inner bottom surface of the lower end cover. The thin sheet increases the dielectric constant, thereby increasing the capacitance of the capacitor, so that even if the capacitor is saturated, it will not cause a short circuit between the two poles, which is beneficial to the production of The condenser pickup completes the sound-electric conversion.

2. This fixture places a small amount of flexible conductive glue at the contact between the graphene suspension film and the positive electrode lead wire, which ensures the good contact between the graphene suspension film and the positive electrode lead wire, and increases the contact between the positive electrode lead wire and the graphene suspension film. It can reduce the contact resistance and reduce the influence of the thickness of the positive lead wire on the parallelism of the capacitor plates. Since the flexible conductive adhesive is flexible, it can be adjusted by adjusting the screws between the upper end cover and the lower end cover of the fixture. Extrusion to control the thickness can effectively reduce the contact resistance between the graphene suspension film and the positive electrode lead wire, reduce the influence on the charge output when the capacitance changes, and reduce the influence of the thickness of the positive electrode lead wire on the parallelism of the two electrode plates of the capacitor.

3. A first positive electrode hole is arranged on the lower end cover of the fixture, a second positive electrode hole is arranged on the sheet, and a positive electrode lead wire perpendicular to the graphene suspension film is pre-buried in the first positive electrode hole and the second positive electrode hole, and the positive electrode leads out. One end of the wire passes through the first positive electrode hole and the second positive electrode hole in turn and is flush with the upper surface of the sheet. This setting is to connect the capacitor positive plate against the upper end cap, so as to ensure that the thickness of the positive lead wire will not increase due to The distance between the two polar plates of the capacitor, the fixture is connected to the positive lead wire of the positive electrode plate of the capacitor in a vertical way, and the length of the positive lead wire is controlled as required, which can reduce the loss of the signal;

4. This fixture fixes the graphene suspension film by fixing the silicon wafer on which the graphene suspension film is placed. When the graphene suspension film needs to be replaced, the silicon wafer on which the graphene suspension film is placed can be replaced. The fixture is simple to operate and easy to learn. And the silicon wafer can be replaced at any time;

Description of drawings

Fig. 1 is the front view of this fixture;

Figure 2 is a side view of the fixture;

Fig. 3 is the rear view of this clamp;

Fig. 4 is the structural representation of this fixture;

5 is a schematic structural diagram of the upper end cap 1;

6 is a schematic view of the front structure of the lower end cover 2;

7 is a schematic diagram of the rear structure of the lower end cover 2;

8 is a schematic structural diagram of the negative plate 3;

9 is a side view of the negative plate 3;

Figure 10 is a front view of the sheet 4;

11 is a rear view of the negative plate 3;

Detailed ways

Embodiment 1: This embodiment is described with reference to FIG. 1-FIG. 11 , a fixture for making a graphene suspension film into a capacitor described in this embodiment,

It includes an upper end cover 1, a lower end cover 2, a negative electrode plate 3, a sheet 4 and a positive lead wire A. The upper end cover 1 and the lower end cover 2 are fixedly installed with screws, and the negative electrode plate 3 is installed in the lower end cover 2. The upper end cover 1 includes The plate body 1-1 and the boss 1-2, a boss 1-2 is machined at the center of the lower surface of the plate body 1-1, and a first through hole 1-1-1 is machined at the center of the plate body 1-1, The first through hole 1-1-1 is to allow the graphene suspension film to receive a sound signal with a certain sound intensity, the lower end cap 2 is a cylinder, and a first groove 2-1 is processed on the center of the upper surface of the cylinder. , a second through hole 2-2 and two first positive holes 2-3 are processed on the lower surface of the cylinder, and the boss 1-2 of the upper end cover 1 is installed in the first groove 2-1 of the lower end cover 2 , the graphene suspension film 7 is attached to the silicon wafer 5, the silicon wafer 5 attached with the graphene suspension film 7 is installed in the interior of the first groove 2-1 of the lower end cap 2, and the silicon wafer with the graphene suspension film 7 is attached 5 is located between the boss 1-2 of the upper end cap 1 and the inner bottom end face of the first groove 2-1, and there is a hole in the middle of the silicon wafer 5 to which the graphene suspension film 7 is attached, so that the graphene suspension film 7 is formed, and the The part other than the graphene suspension film 7 also has a graphene film attached to the silicon wafer 5, that is, the graphene covers a larger area on the silicon wafer 5, but only the middle hole is the graphene suspension film 7, so set In order to realize the contact between the positive lead A of the capacitor positive plate and the graphene suspension film 7, the positive lead A cannot directly contact the graphene suspension film 7, if it is directly in contact with the graphene suspension film 7 will affect the graphene suspension film. 7 vibration, the capacitor positive plate is a silicon wafer 5 attached with a graphene suspension film 7, which has two advantages. One is to ensure that the positive lead A does not exceed the upper surface of the sheet 4 during processing, and will not increase Another advantage of the distance between the two polar plates of the capacitor is that the diameter of the fixture is about 4cm. If it is drawn out like the negative plate 3, the positive lead A is long, which has a certain attenuation effect on the signal. Connect the positive electrode of the capacitor in a vertical way. For the positive lead A of the board, the length of the positive lead A can be controlled within 1cm, which can reduce the loss of the signal as much as possible. When installing the silicon wafer 5, try to ensure that the hole in the middle of the silicon wafer 5 and the clamp negative plate 3 The circular plate body 3-1 is concentric, and the side of the silicon wafer 5 attached with the graphene suspension film 7 faces the bottom end surface of the first groove 2-1 in the lower end cover 2, so that the anode lead wire A is in contact with the graphene. The suspension film 7 forms an electrical path, which is convenient for placing the positive lead A of the positive plate. The upper surface of the sheet 4 is machined with a second groove 4-1 and two second positive holes 4-2. The second groove 4-1 At the center of the sheet 4, two second positive holes 4-2 are located on one side of the second groove 4-1, and the sheet 4 is fixedly installed on the inner bottom end surface of the first groove 2-1 of the lower end cover 2, And the sheet 4 is located between the inner bottom end face of the graphene suspension film 7 and the first groove 2-1, and the upper surface of the sheet 4 is set relative to the graphene suspension film 7, and the purpose is to utilize the second groove 4 on the upper surface of the sheet 4. The distance between the fourth through hole 4-1-2 on -1 and the graphene suspension film 7 To form a ventilation path, only by ensuring that the graphene suspension film 7 is ventilated up and down, the graphene suspension film 7 clamped in the middle of the fixture can vibrate freely. Because in order to increase the capacitance value, the distance between the two polar plates is very small at present, and the sheet 4 can avoid the graphite The short circuit of the capacitor two-pole plate caused by the vibration of the alkene suspension film 7; due to the existence of the sheet 4, the dielectric constant is increased, thereby increasing the capacitance value of the capacitor, which is conducive to the completion of the acoustic-electric conversion of the capacitive pickup, and the lower surface of the sheet 4 and the first The inner bottom end face of the groove 2-1 overlaps, and one end of each positive lead wire A is fixedly connected with the graphene suspension film 7 through each first positive electrode hole 2-3 on the lower surface of the lower end cover 2, and each The positive lead wires A are arranged vertically with the graphene suspension film 7, and the length of the positive lead wires A is controlled within 1 cm, which can reduce the loss of the signal, and the other end of each positive lead wire A is exposed to the lower surface of the lower end cap 2 10mm , the first positive electrode hole 2-3 and the second positive electrode hole 4-2 are pre-embedded with a positive electrode lead wire A perpendicular to the graphene suspension film, and one end of the positive electrode lead wire A passes through the first positive electrode hole 2-3 and the first positive electrode hole 2-3 in turn. The second positive electrode hole 4-2 is flush with the upper surface of the sheet 4, and this arrangement prevents each positive electrode lead wire A from being closed by the sheet 4 to cause insulation, and ensures good contact between each positive electrode lead wire A and the graphene suspension film 7 , is to connect the capacitor positive plate on the upper end cover 1, so as to ensure that the distance between the two capacitor plates will not be increased due to the thickness of the positive lead A. This fixture is connected to the positive lead A of the capacitor positive plate in a vertical manner. The length of the positive lead wire A can be controlled within 1cm, which can reduce the loss of the signal. A flexible material 6 is installed between the silicon wafer 5 and the upper end cover 1. The flexible material 6 is a foam material of about 2mm, except for individual positions. They are all non-metallic structures, such as resin, nylon, plastic and other materials. The purpose of selecting non-metallic materials is not to affect the stray parameters of the capacitor made of the graphene suspension film 7.

Specific embodiment 2: This embodiment is described with reference to FIG. 2. A kind of fixture for making a graphene suspension film into a capacitor described in this embodiment, each positive lead A and the graphene suspension film 7 are connected by flexible conductive glue, so Setting, to ensure the good contact between each positive lead wire A and the graphene suspension film 7, increase the contact area of the positive electrode lead wire A and the graphene suspension film 7, play the role of reducing the contact resistance, as for a small amount of conductive glue The thickness problem, because it is flexible, can be adjusted by adjusting the screws of the upper end cover 1 and the lower end cover 2 of the fixture to squeeze its thickness. After the purpose of reducing the contact resistance is completed, the influence on the parallelism of the two polar plates of the capacitor can be reduced as much as possible. Others are the same as the first embodiment.

Embodiment 3: This embodiment will be described with reference to FIG. 5 . In this embodiment, a clamp for making a graphene suspension film into a capacitor, the upper end cover 1 is circular, and the diameter of the boss 1-2 is smaller than that of the plate body 1-2. 1, the height of the plate body 1-1 is less than the height of the boss 1-2, so set, if the plate body 1-1 is only a cover without a boss 1-2, then the plate body of the upper end cover 1 is 1-1 to the bottom of the lower end cap 2 all need to be filled. The more filling materials, the more uneven the pressure transmitted to the silicon wafer. This setting reduces the possibility of the unbalanced force causing the silicon wafer to crack. Others are related to the specific implementation. Method one or two are the same.

Specific Embodiment 4: This embodiment is described with reference to FIG. 5 . In this embodiment, a jig for making a graphene suspension film into a capacitor is machined on the upper surface of the plate body 1-1 of the upper end cover 1. Threaded through holes 1-1-2, a plurality of first threaded through holes 1-1-2 are annularly distributed on the outside of the first through holes 1-1-1, the plurality of first threaded through holes 1-1- 2 is four, and the first threaded through holes 1-1-2 are used to fix the upper end cap 1 and the lower end cap 2 to make them integral, and others are the same as in the first, second or third embodiment.

Embodiment 5: The present embodiment will be described with reference to FIG. 6 and FIG. 7 . According to the present embodiment, a jig for making a graphene suspension film into a capacitor, the upper surface of the cylinder of the lower end cover 2 is annularly processed with a plurality of The second threaded through hole 2-4, the second threaded through hole 2-4 is used to fix the upper end cap 1 and the lower end cap 2, the second threaded through hole 2-4 is arranged corresponding to the first threaded through hole 1-1-2, A plurality of ventilation holes 2-5 are also processed on the lower surface of the cylinder. The purpose of setting the plurality of ventilation holes 2-5 is to form ventilation holes on the other side of the graphene suspension membrane 7 receiving the sound signal, in order to allow the graphene The suspension membrane 7 can vibrate freely after being impacted by sound, and the others are the same as those in the first, second, third or fourth embodiment.

Embodiment 6: This embodiment is described with reference to FIG. 6 and FIG. 7 . In this embodiment, a jig for making a graphene suspension film into a capacitor is described. The second through hole 2-2 on the lower end cover 2 includes a circular through hole. The hole 2-2-1 is connected with the rectangular through hole 2-2-2, the circular through hole 2-2-1 is connected with the rectangular through hole 2-2-2, and the second through hole 2-2 is used to install the negative plate 3. Others are the same as in the specific embodiment one, two, three, four or five.

Embodiment 7: This embodiment will be described with reference to FIG. 8 and FIG. 9 , a fixture for making a graphene suspension film into a capacitor described in this embodiment, the negative plate 3 includes a circular plate body 3-1 and a rectangular plate body 3 -2, the circumferential surface of the circular plate body 3-1 is fixedly connected to the short side of one end of the rectangular plate body 3-2, and the upper surface of the other end of the rectangular plate body 3-2 is machined with a third through hole 3-2- 1. The diameter of the third through hole 3-2-1 is 3mm. The purpose is to facilitate electrical wiring. The circular plate body 3-1 of the negative plate 3 is embedded in the second through hole 2-2 of the lower end cover 2. After the plate 3 is inlaid, it is kept at the same level as the inner bottom surface of the lower end cover 2. The inlay method can be inlaid into the second through hole 2-2 and fixed with glue. After installation, the first groove 2-1 of the lower end cover 2 is installed. The bottom end surface of the capacitor is polished to expose the negative plate 3. The negative plate 3 is a metal plate structure with good electrical conductivity. Since the distance between the two electrode plates of the capacitor needs to be reduced to increase the capacitance value, the surface roughness of the negative plate 3 must be ensured, especially is the flatness, the surface roughness is higher than the micron level, and the others are the same as the specific embodiments one, two, three, four, five or six.

Embodiment 8: This embodiment is described with reference to FIG. 10 and FIG. 11. In this embodiment, a jig for making a graphene suspension film into a capacitor, the second groove 4-1 on the sheet 4 includes a circular groove 4-1-1 and a plurality of U-shaped grooves 4-1-2, and one end of each U-shaped groove 4-1-2 is communicated with the circular groove 4-1-1, and each U-shaped groove 4-1-2 is connected to the circular groove 4-1-1. Fourth through holes 4-1-3 are processed on the bottom surface of the other end of the groove 4-1-2, and each fourth through hole 4-1-3 is arranged corresponding to each ventilation hole 2-5, so that The setting is to make the graphene suspension film 7 vibrate, and there is an air circulation under the graphene suspension film 7, and the others are the same as the specific embodiment one, two, three, four, five, six or seven.

Embodiment 9: This embodiment is described with reference to FIG. 10 and FIG. 11 . In this embodiment, a jig for making a graphene suspension film into a capacitor, the thickness of the sheet 4 is 30 μm, and the depth of the second groove 4-1 is 30 μm. is 20 μm, and the others are the same as those in the specific embodiment one, two, three, four, five, six, seven or eight.

working principle

When the clamp is in use, the circular plate body 3-1 of the negative plate 3 is embedded in the second through hole 2-2 of the lower end cover 2, and after the installation is completed, the bottom of the first groove 2-1 of the lower end cover 2 is installed. The end face is polished and the negative electrode plate 3 is exposed, and the sheet 4 is fixedly installed on the bottom end face of the first groove 2-1 of the lower end cover 2. The lower surface of the sheet 4 is connected to the bottom of the first groove 2-1 of the lower end cover 2. The end faces are in contact, and each fourth through hole 4-1-3 on the sheet 4 is set corresponding to each ventilation hole 2-5, and the graphene suspension film 7 is attached to the silicon wafer 5, and the graphene suspension film 7 will be attached. The silicon wafer 5 is installed in the interior of the first groove 2-1 of the lower end cover 2, and the side of the silicon wafer 5 with the graphene suspension film 7 is attached to the bottom end surface of the first groove 2-1 in the lower end cover 2. , the sheet 4 is located between the graphene suspension film 7 and the inner bottom end face of the first groove 2-1, and the grooves and holes on the sheet 4 are set correspondingly with the graphene suspension film 7, and the One end passes through each first positive electrode hole 2-3 on the lower surface of the lower end cap 2 and each second positive electrode hole 4-2 of the sheet 4 is vertically connected with the graphene suspension film 7 through a small amount of flexible conductive glue, and each positive electrode leads out The other end of the line A is exposed 10mm from the lower surface of the lower end cap 2, a flexible material 6 is installed between the silicon wafer 5 and the upper end cap 1, the upper end cap 1 is fixedly installed with the lower end cap 2 by screws, and the boss 1 of the upper end cap 1 -2 is installed in the first groove 2-1 of the lower end cover 2, and the screws pass through the first threaded through hole 1-1-2 of the upper end cover 1 and the second threaded through hole 2-4 of the lower end cover 2 in sequence, and the completion of Install.

Claims (9)

1. The utility model provides a make anchor clamps of electric capacity with graphite alkene suspension film which characterized in that: the device comprises an upper end cover (1), a lower end cover (2), a negative plate (3), a sheet (4) and a positive lead-out wire (A);

the upper end cover (1) and the lower end cover (2) are fixedly installed, the negative plate (3) is installed in the lower end cover (2), the upper end cover (1) comprises a plate body (1-1) and a boss (1-2), the boss (1-2) is machined in the center of the lower surface of the plate body (1-1), a first through hole (1-1-1) is machined in the center of the plate body (1-1), the lower end cover (2) is a cylinder, a first groove (2-1) is machined in the center of the upper surface of the cylinder, a second through hole (2-2) and two first positive electrode holes (2-3) are machined in the lower surface of the cylinder, the boss (1-2) of the upper end cover (1) is installed in the first groove (2-1) of the lower end cover (2), and the graphene suspension film (7) is attached to a silicon wafer (5), the silicon wafer (5) attached with the graphene suspension film (7) is arranged inside a first groove (2-1) of the lower end cover (2), the silicon wafer (5) attached with the graphene suspension film (7) is positioned between a boss (1-2) of the upper end cover (1) and the inner bottom end face of the first groove (2-1), one side of the silicon wafer (5) attached with the graphene suspension film (7) faces the bottom end face of the first groove (2-1) in the lower end cover (2), a second groove (4-1) and two second positive electrode holes (4-2) are processed on the upper surface of the thin sheet (4), the second groove (4-1) is positioned at the center of the thin sheet (4), the two second positive electrode holes (4-2) are positioned at one side of the second groove (4-1), and the thin sheet (4) is fixedly arranged on the inner bottom end face of the first groove (2-1) of the lower end cover (2), and the sheet (4) is positioned between the graphene suspension film (7) and the inner bottom end face of the first groove (2-1), the upper surface of the sheet (4) is opposite to the graphene suspension film (7), the lower surface of the sheet (4) is superposed with the inner bottom end face of the first groove (2-1), one end of each positive lead wire (A) penetrates through each first positive hole (2-3) on the lower surface of the lower end cover (2) and is fixedly connected with the graphene suspension film (7), each positive lead wire (A) is perpendicular to the graphene suspension film (7), the other end of each positive lead wire (A) is exposed out of the lower surface of the lower end cover (2) by 10mm, and a flexible material (6) is arranged between the silicon wafer (5) and the upper end cover (1).

2. The fixture for manufacturing the capacitor from the graphene suspension film as claimed in claim 1, wherein: each positive lead-out wire (A) is connected with the graphene suspension film (7) by adopting flexible conductive adhesive.

3. The fixture for manufacturing the capacitor from the graphene suspension film as claimed in claim 1, wherein: the upper end cover (1) is circular, the diameter of the boss (1-2) is smaller than that of the plate body (1-1), and the height of the plate body (1-1) is smaller than that of the boss (1-2).

4. The fixture for manufacturing the capacitor from the graphene suspension film as claimed in claim 2, wherein: a plurality of first threaded through holes (1-1-2) are processed on the upper surface of a plate body (1-1) of the upper end cover (1), and the first threaded through holes (1-1-2) are distributed on the outer sides of the first through holes (1-1-1) in an annular mode.

5. The fixture for manufacturing the capacitor from the graphene suspension film as claimed in claim 1, wherein: a plurality of second threaded through holes (2-4) are annularly processed on the upper surface of the cylinder of the lower end cover (2), and a plurality of vent holes (2-5) are processed on the lower surface of the cylinder.

6. The clamp for manufacturing the graphene suspension film into the capacitor according to claim 1, wherein: the second through hole (2-2) on the lower end cover (2) comprises a circular through hole (2-2-1) and a rectangular through hole (2-2-2), and the circular through hole (2-2-1) is communicated with the rectangular through hole (2-2-2).

7. The fixture for manufacturing the capacitor from the graphene suspension film as claimed in claim 1, wherein: the negative plate (3) comprises a circular plate body (3-1) and a rectangular plate body (3-2), the circumferential surface of the circular plate body (3-1) is fixedly connected with the short side face of one end of the rectangular plate body (3-2), a third through hole (3-2-1) is processed on the upper surface of the other end of the rectangular plate body (3-2), and the negative plate (3) is fixedly installed in the second through hole (2-2) of the lower end cover (2).

8. The fixture for manufacturing the capacitor from the graphene suspension film as claimed in claim 1, wherein: the second groove (4-1) on the sheet (4) comprises a circular groove (4-1-1) and a plurality of U-shaped grooves (4-1-2), one end of each U-shaped groove (4-1-2) is communicated with the circular groove (4-1-1), a fourth through hole (4-1-3) is machined in the bottom face of the other end of each U-shaped groove (4-1-2), and each fourth through hole (4-1-3) is arranged corresponding to each vent hole (2-5).

9. The fixture for manufacturing the capacitor from the graphene suspension film as claimed in claim 8, wherein: the thickness of the thin sheet (4) is 30 μm, and the depth of the second groove (4-1) is 20 μm.

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