CN218918650U

CN218918650U - High-density energy storage capacitor

Info

Publication number: CN218918650U
Application number: CN202223007709.3U
Authority: CN
Inventors: 谢志懋; 邬文彬
Original assignee: Foshan City Xinyuan Electronics Co ltd
Current assignee: Foshan City Xinyuan Electronics Co ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-04-25
Anticipated expiration: 2032-11-11

Abstract

The utility model relates to the technical field of capacitors, in particular to a high-density energy storage capacitor, which comprises a battery core layer, wherein the outer wall of the battery core layer is provided with a sealed shell, the outer wall of the battery core layer is provided with a heat dissipation part, and a sealed moisture-proof part is arranged between the outer wall of the battery core layer and the inner wall of the sealed shell.

Description

High-density energy storage capacitor

Technical Field

The utility model relates to the technical field of capacitors, in particular to a high-density energy storage capacitor.

Background

Two conductors close to each other with a layer of non-conductive insulating medium sandwiched between them, constitute a capacitor. When a voltage is applied between the two plates of the capacitor, the capacitor stores a charge. The capacitance of the capacitor is equal in value 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 the capacitor is farad. The capacitive element is generally denoted by the letter C in the circuit diagram;

the existing capacitor has large volume, small voltage, long production period, higher production cost, higher contact loss and weaker high-frequency overcurrent capacity and high-voltage capacity of a product during use, and based on the capacitor, a microminiature absorption capacitor is disclosed in Chinese patent publication No. CN213958788U, and comprises an electrode, wherein the outer surface of the electrode is fixedly connected with a metal spraying layer, the end face of the side end of the electrode is fixedly connected with an outgoing line, the outer surface of the metal spraying layer is fixedly connected with a metal film, the metal film comprises a thin film, and the outer surface of the thin film is provided with geometric shapes;

the capacitor has the advantages of simple design structure, higher cost performance, capacity optimization, capacity production with the material, small volume, high voltage, short production period, high automation degree, low cost and high product consistency, the contact area of a metal spraying layer and an electrode is increased by a multi-string technology in the design, the contact loss of metal is reduced, the loss is reduced, the high-frequency overcurrent capacity and the high-voltage capacity of the product are improved, however, the existing capacitor can work in different environments according to the requirements of users, for example, the capacitor can work for a long time under 85% relative humidity, and the capacitor is not provided with a sealing device aiming at the high-humidity environment through the structure disclosed by the specification and the attached drawing of the specification, so that the capacitor can not be used in the high-humidity environment, and certain defects exist.

In summary, it is necessary to invent a high density energy storage capacitor.

Disclosure of Invention

Therefore, the present utility model provides a high-density energy storage capacitor, so as to solve the problem that the capacitor may not be used in a high humidity environment because the capacitor is not provided with a sealing device for the high humidity environment as the above patent technology is disclosed by the specification and the attached drawings.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a high density energy storage capacitor, includes the electric core layer, the outer wall of electric core layer is provided with sealed shell, the outer wall of electric core layer is provided with the radiator unit, be provided with sealed dampproofing part between the outer wall of electric core layer and the inner wall of sealed shell.

Preferably, the electric core layer comprises a film layer, the outer walls of the film layer are all evaporated with gold plating layers, and the film layer is wholly wound into a cylinder shape.

Preferably, both sides of the inner wall of the outer wall of the battery cell layer are connected with metal spraying layers, and outgoing lines are fixed on the outer wall of one side of the metal spraying layers, which is far away from the battery cell layer.

Preferably, the sealed moisture-proof component comprises a first sealing layer, the inner wall of the first sealing layer is fixedly connected with the outer wall of the battery cell layer, and two sides of the outer wall of the metal spraying layer are connected with two sides of the inner wall of the first sealing layer.

Preferably, a second sealing layer is fixed on the outer wall of the first sealing layer and at one end far away from the battery cell layer, the thickness dimension of the second sealing layer is larger than that of the first sealing layer, and the outer wall of the second sealing layer is connected with the inner wall of the sealing shell.

Preferably, the heat dissipation part comprises a heat conduction layer, the inner wall of the heat conduction layer is connected with the outer wall of the sealed shell, and heat conduction silicone grease is arranged between the heat conduction layer and the sealed shell.

Preferably, the outer wall of one side of the heat conducting layer far away from the sealed shell is fixedly provided with radiating fins, and a plurality of radiating fins are arranged on the outer wall of the heat conducting layer in an annular array mode.

The beneficial effects of the utility model are as follows:

according to the utility model, a certain amount of moisture can be isolated through the arranged sealing shell and the heat conducting layer, and even if a small amount of moisture enters the sealing shell through the sealing shell and the heat conducting layer, the arranged first sealing layer and second sealing layer can also block the moisture through the moisture absorption effect, so that the influence of the moisture on the battery core layer can be avoided, the heat dissipation effect of the capacitor can be improved through the arranged heat conducting layer and the heat dissipation fins, and the influence of the structure on the heat dissipation of the capacitor is avoided.

Drawings

FIG. 1 is a schematic view of the external structure of the present utility model in front view;

FIG. 2 is a schematic elevational view of the seal housing of FIG. 1 with the seal housing removed in accordance with the present utility model;

FIG. 3 is a schematic cross-sectional side view of the present utility model;

fig. 4 is a schematic diagram of an equivalent circuit of the present utility model.

In the figure: 100. a sealed housing; 110. a heat conducting layer; 120. a heat radiation fin; 200. a cell layer; 210. a thin film layer; 211. a gold plating layer; 300. a metal spraying layer; 400. a lead-out wire; 500. a first sealing layer; 510. and a second sealing layer.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Referring to fig. 1 to 4, the high-density energy storage capacitor provided by the utility model comprises a cell layer 200, the cell layer 200 comprises a film layer 210, gold plating layers 211 are evaporated on the outer walls of the film layer 210, preferably, a shielding layer can be attached to the middle or two sides of an insulating medium layer on the film layer 210 when the gold plating layers 211 are evaporated, so that a margin can be formed without the gold plating layers 211 on the insulating medium, the film layer 210 forms a low-sheet-resistance metal film, the film layer 210 is wholly wound into a cylinder shape, N series capacitors are formed inside the core when the prepared film layer 210 is wound into a capacitor core, according to the basic principle of a circuit, the voltage on each series capacitor is U, the total voltage on the N series capacitors is NU, the internal capacitor is subjected to low voltage, the total voltage is high voltage which is NB times the internal voltage, because electrodes with special geometric shapes are adopted to realize series connection in the capacitor, N cores which are well connected in series can be formed by one-time winding, compared with the external series connection of the capacitor, the production efficiency is improved, the N-series capacitor is manufactured by all the working procedures and is equivalent to N single capacitors, the outer wall of the cell layer 200 is provided with the sealed shell 100, the arranged sealed shell 100 is made of plastic materials, the material of the sealed shell 100 needs to be added with a hydrolysis-resistant material, the hydrolysis-resistant material is preferably hydrolysis-resistant agent or polylactic acid fiber, the sealed shell 100 can be prevented from absorbing moisture and absorbing moisture under extremely high humidity by adding the hydrolysis-resistant material, the material does not deteriorate, moisture can not enter the internal core body when the material does not generate the moisture, namely the inner cell layer 200 is ensured not to be affected with the moisture, the two sides of the outer wall of the cell layer 200 are connected with the metal spraying layer 300, the outer wall of one side of the metal spraying layer 300, which is far away from the cell layer 200, is fixedly provided with an outgoing line 400;

the outer wall of the battery cell layer 200 is provided with a heat dissipation component, the heat dissipation component comprises a heat conduction layer 110, the inner wall of the heat conduction layer 110 is connected with the outer wall of the sealed shell 100, heat conduction silicone grease is arranged between the heat conduction layer 110 and the sealed shell 100, the heat conduction layer 110 and the heat dissipation fins 120 are preferably made of metal copper or metal aluminum, the heat conduction silicone grease is used for transmitting heat generated by the battery cell layer 200 in operation to the heat conduction layer 110 through the sealed shell 100, the heat dissipation fins 120 can be used for rapidly dissipating heat by the arranged heat conduction layer 110, the heat dissipation fins 120 are fixed on the outer wall of one side of the heat conduction layer 110 far away from the sealed shell 100, and the plurality of heat dissipation fins 120 are arranged on the outer wall of the heat conduction layer 110 in an annular array mode;

a sealed moisture-proof component is arranged between the outer wall of the cell layer 200 and the inner wall of the sealed shell 100, the sealed moisture-proof component comprises a first sealing layer 500, the inner wall of the first sealing layer 500 is fixedly connected with the outer wall of the cell layer 200, the arranged first sealing layer 500 is preferably made of epoxy resin, the arranged cell layer 200 can be coated with a layer of the first sealing layer 500 with good sealing performance and cured through high-temperature baking after winding, the arranged first sealing layer 500 can play a role in protecting the cell layer 200 from being wetted, two sides of the outer wall of the metal spraying layer 300 are connected with two sides of the inner wall of the first sealing layer 500, one end, far away from the cell layer 200, of the outer wall of the first sealing layer 500 is fixedly provided with a second sealing layer 510, the thickness dimension of the second sealing layer 510 is larger than that of the first sealing layer 500, the outer wall of the second sealing layer 510 is connected with the inner wall of the sealed shell 100, the arranged second sealing layer 510 is made of the same material as that of the first sealing layer 500, but a certain moisture absorbent is required to be added into the material of the second sealing layer 510, so that the moisture absorbent is improved, and the moisture absorbent effect of the second sealing layer 510 is preferably made of calcium chloride powder or bamboo powder.

The application process of the utility model is as follows: in the utility model, firstly, a film layer 210 is evaporated on the outer wall of a battery cell layer 200, after the film layer 210 is evaporated, a metal spraying layer 300 is taken out and the film layer 210 is wound on the outer wall of the metal spraying layer 300, after the winding is finished, liquid epoxy resin is taken out and uniformly smeared on the outer wall of the film layer 210 wound, then the epoxy resin is cured at high temperature to form a first sealing layer 500, after the finishing, a certain moisture absorbent is added into the liquid epoxy resin, then the liquid epoxy resin and the moisture absorbent are fully mixed and uniformly smeared on the outer wall of the first sealing layer 500, then the liquid epoxy resin and the moisture absorbent are cured at high temperature to form a second sealing layer 510, meanwhile, a worker also needs to use plastic raw materials to be matched with hydrolysis resistant materials to manufacture a sealing shell 100, the cured battery cell layer 200 is plugged into the sealing shell 100, the lead-out wires 400 are fixed on two sides of the outer wall of the metal spraying layer 300 before plugging, the lead-out wires 400 extend out from two ends of the sealing shell 100, and workers can seal the battery cell layer 200 by using the raw materials of the sealing shell 100 after plugging is finished. After the completion, the heat conduction silicone grease is smeared on the outer wall of the sealed shell 100, and the heat conduction layer 110 with the heat dissipation fins 120 fixed in advance is fixed on the outer wall of the sealed shell 100.

The above description is of the preferred embodiments of the present utility model, and any person skilled in the art may modify the present utility model or make modifications to the present utility model with the technical solutions described above. Therefore, any simple modification or equivalent made according to the technical solution of the present utility model falls within the scope of the protection claimed by the present utility model.

Claims

1. A high density energy storage capacitor comprising a cell layer (200), characterized in that: the battery cell structure comprises a battery cell layer (200), and is characterized in that a sealing shell (100) is arranged on the outer wall of the battery cell layer (200), a heat dissipation part is arranged on the outer wall of the battery cell layer (200), and a sealing moistureproof part is arranged between the outer wall of the battery cell layer (200) and the inner wall of the sealing shell (100).

2. A high density energy storage capacitor as defined in claim 1, wherein: the battery cell layer (200) comprises a film layer (210), wherein the outer walls of the film layer (210) are all plated with gold layers (211) in an evaporation mode, and the film layer (210) is wholly wound into a cylinder shape.

3. A high density energy storage capacitor as claimed in claim 2, wherein: the battery cell structure is characterized in that both sides of the inner wall of the outer wall of the battery cell layer (200) are connected with metal spraying layers (300), and outgoing lines (400) are fixed on the outer wall of one side, far away from the battery cell layer (200), of the metal spraying layers (300).

4. A high density energy storage capacitor as claimed in claim 3, wherein: the sealing moistureproof component comprises a first sealing layer (500), wherein the inner wall of the first sealing layer (500) is fixedly connected with the outer wall of the battery cell layer (200), and two sides of the outer wall of the metal spraying layer (300) are connected with two sides of the inner wall of the first sealing layer (500).

5. A high density energy storage capacitor as defined in claim 4 wherein: the outer wall of the first sealing layer (500) and one end far away from the battery cell layer (200) are fixed with a second sealing layer (510), the thickness dimension of the second sealing layer (510) is larger than that of the first sealing layer (500), and the outer wall of the second sealing layer (510) is connected with the inner wall of the sealing shell (100).

6. A high density energy storage capacitor as defined in claim 5, wherein: the heat dissipation part comprises a heat conduction layer (110), wherein the inner wall of the heat conduction layer (110) is connected with the outer wall of the sealed shell (100), and heat conduction silicone grease is arranged between the heat conduction layer (110) and the sealed shell (100).

7. A high density energy storage capacitor as defined in claim 6, wherein: radiating fins (120) are fixed on the outer wall of one side, far away from the sealed shell (100), of the heat conducting layer (110), and a plurality of radiating fins (120) are arranged on the outer wall of the heat conducting layer (110) in an annular array mode.