A moisture-resistant laminated solid aluminum electrolytic capacitor and a manufacturing method thereof

Abstract

The present invention relates to the technical field of manufacturing solid aluminum electrolytic capacitors, and specifically discloses a moisture-resistant laminated solid aluminum electrolytic capacitor and a manufacturing method, including a shell and a cover, wherein the inner side of the shell is provided with positive contacts and negative contacts that are staggered and distributed at equal intervals, the inner side of the shell is provided with two symmetrically distributed arc strips, the bottom of the arc strip is fixedly connected with two symmetrically distributed conductive strips, the inner side of the conductive strip is fixedly connected with U-shaped card slots that are distributed at equal intervals in a straight line, and the outer side of the positive contact and the outer side of the negative contact are respectively provided with positive conductive sheets and negative conductive sheets. The present invention arranges two conductive sheets on the outer side of the positive contact and the negative contact, and if one group of conductive sheets and the U-shaped card slot appear, the other group of conductive sheets and the U-shaped card slot can still be used normally, so that the entire capacitor can continue to be used, thereby improving the service life of the laminated solid aluminum electrolytic capacitor.

Description

Technical Field

[0001] The invention belongs to the technical field of solid aluminum electrolytic capacitor manufacturing, and in particular relates to a moisture-resistant laminated solid aluminum electrolytic capacitor and a manufacturing method thereof. Background Art

[0002] Solid aluminum electrolytic capacitors are capacitors that use conductive polymers as dielectric materials. Compared with traditional liquid aluminum electrolytic capacitors, they have significant advantages and different working principles. The main feature of solid aluminum electrolytic capacitors is that their dielectric material is conductive polymers. This material has the characteristics of high conductivity and good environmental stability. The structure of solid capacitors is similar to that of traditional aluminum electrolytic capacitors, both of which are aluminum winding structures, but the electrolyte is replaced by solid polymer materials.

[0003] In the Chinese patent with publication number CN117766299B, a laminated solid aluminum electrolytic capacitor is mentioned, which uses adhesive tape to fix the laminated core to form a core package, which will not cause damage to the core, is easy to control the clamping force, and can be used to fix the core of any number of layers, ensuring the product quality of the capacitor. The use of adhesive tape for fixing is lower in cost, which is conducive to reducing production costs, and the overall structure is simple, easy to install, and has high production efficiency;

[0004] The foil and the lead structure in the laminated solid aluminum electrolytic capacitor in the above-mentioned prior art are connected only by a single contact piece and a connection port. If the contact piece and the connection port fail during long-term use of the capacitor, the use of the entire capacitor will be affected, and the practicality is poor. Therefore, we propose a moisture-resistant laminated solid aluminum electrolytic capacitor and a manufacturing method. Summary of the invention

[0005] The object of the present invention is to provide a moisture-resistant laminated solid aluminum electrolytic capacitor and a manufacturing method thereof, so as to solve the problem in the prior art that if a contact piece and a connection port fail, the use of the entire capacitor will be affected.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A moisture-resistant laminated solid aluminum electrolytic capacitor comprises a shell and a cover body, wherein the inner side of the shell is provided with positive electrode contacts and negative electrode contacts which are staggered and distributed at equal intervals, the inner side of the shell is provided with two symmetrically distributed arcuate bars, the bottom of the arcuate bars are fixedly connected with two symmetrically distributed conductive bars, the inner side of the conductive bars is fixedly connected with U-shaped card slots which are distributed at equal intervals in a straight line, the outer side of the positive electrode contacts and the outer side of the negative electrode contacts are respectively provided with positive conductive sheets and negative conductive sheets, and a moisture-proof coating is provided between the shell and the cover body.

[0008] Preferably, two symmetrically distributed gaskets are fixedly connected to the top of the arc-shaped strip, and the top of the gasket is in contact with the bottom of the cover body.

[0009] Preferably, the tops of the two arc-shaped strips are respectively provided with a positive electrode pin and a negative electrode pin.

[0010] Preferably, the top of the positive electrode pin and the top of the negative electrode pin both pass through the cover body, and a sealing ring is provided on the outside of the positive electrode pin and the outside of the negative electrode pin.

[0011] Preferably, the two positive electrode conductive sheets are fixedly connected to the outside of the positive electrode contact sheet, and the two negative electrode conductive sheets are fixedly connected to the outside of the negative electrode contact sheet.

[0012] Preferably, an insulating block is provided between the positive contact piece and the negative contact piece.

[0013] Preferably, two symmetrically distributed spacer bars are fixedly connected to the inner side of the shell, and two ends of the spacer bars are respectively in contact with the outer sides of the two arc-shaped bars.

[0014] Preferably, the conductive strip is L-shaped, a lower insulating block is provided inside the conductive strip, and an upper insulating sheet is provided at the bottom of the arc strip.

[0015] Another technical problem to be solved by the present invention is to provide a method for manufacturing a moisture-resistant laminated solid aluminum electrolytic capacitor, comprising the following steps:

[0016] S1, Contacts and Installation

[0017] Alternately stack the positive contact sheets and the negative contact sheets until they are stacked to an appropriate height. When stacking, place the positive conductive sheets and the negative conductive sheets into the corresponding U-shaped slots respectively, clamp two arc strips and the conductive strips on the outside of the stacked positive contact sheets and the negative contact sheets, and place an upper insulating sheet and a lower insulating sheet at the bottom of the arc strips and the inside of the conductive strips;

[0018] S2. Installation of battery cells

[0019] Place the stacked battery cells into the housing so that the two arc-shaped bars are located between the two spacer bars, and cover the housing with a cover;

[0020] S3, moisture-proof packaging

[0021] After the cover is installed, a moisture-proof coating is applied to the joint between the cover and the shell by a glue coating machine to complete the manufacture of the solid aluminum electrolytic capacitor.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention arranges two conductive sheets outside the positive contact sheet and the negative contact sheet. The two conductive sheets and the U-shaped slot conduct electricity through the conductive strip and the arc strip, and then transmit the electricity to the positive electrode pin or the negative electrode pin. During long-term use, if one set of the conductive sheets and the U-shaped slot fails, the other set of the conductive sheets and the U-shaped slot can still be used normally, so that the entire capacitor can continue to be used, thereby improving the service life of the laminated solid aluminum electrolytic capacitor.

[0024] 2. The present invention applies a moisture-proof coating between the shell and the cover. During the use of the laminated solid aluminum electrolytic capacitor, water vapor in the external environment cannot enter the shell, thereby ensuring the dryness of the shell and preventing short circuits from occurring. The laminated solid aluminum electrolytic capacitor has good moisture resistance and further improves the service life of the laminated solid aluminum electrolytic capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 One of the three-dimensional diagrams of the present invention;

[0026] Figure 2 This is the second stereogram of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the housing of the present invention;

[0028] Figure 4 It is a schematic diagram of the capacitor core structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the connection between the arc strip and the conductive strip of the present invention;

[0030] Figure 6 It is a schematic diagram of installing the positive contact piece and the negative contact piece of the present invention.

[0031] In the figure: 1. outer shell; 2. moisture-proof coating; 3. cover; 4. positive electrode pin; 5. sealing ring; 6. negative electrode pin; 7. arc strip; 8. spacer strip; 9. gasket; 10. upper insulating sheet; 11. positive electrode contact sheet; 12. lower insulating sheet; 13. conductive strip; 14. U-shaped slot; 15. positive electrode conductive sheet; 16. insulating block; 17. negative electrode contact sheet; 18. negative electrode conductive sheet. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Reference Figure 1-Figure 6 As shown, the present invention provides a moisture-resistant laminated solid aluminum electrolytic capacitor, comprising a shell 1 and a cover 3, wherein the inner side of the shell 1 is provided with positive electrode contacts 11 and negative electrode contacts 17 which are staggered and distributed at equal intervals, the inner side of the shell 1 is provided with two symmetrically distributed arcuate bars 7, the bottom of the arcuate bars 7 is fixedly connected with two symmetrically distributed conductive bars 13, the inner side of the conductive bars 13 is fixedly connected with U-shaped card slots 14 which are distributed at equal intervals in a straight line, the outer side of the positive electrode contacts 11 and the outer side of the negative electrode contacts 17 are respectively provided with positive conductive sheets 15 and negative conductive sheets 18, and an anti-moisture coating 2 is provided between the shell 1 and the cover 3.

[0034] In a further embodiment, referring to Figure 3-Figure 4 Two symmetrically distributed gaskets 9 are fixedly connected to the top of the arc strip 7, and the top of the gasket 9 contacts the bottom of the cover body 3.

[0035] In this embodiment, the gasket 9 cooperates with the cover 3 to limit its position from the top, ensuring that the battery cell is stably installed inside the housing 1 and is not easily displaced during use.

[0036] In a further embodiment, referring to Figure 1-Figure 5 A positive electrode pin 4 and a negative electrode pin 6 are respectively arranged on the top of the two arc-shaped strips 7. The top of the positive electrode pin 4 and the top of the negative electrode pin 6 both penetrate the cover body 3. A sealing ring 5 is arranged on the outside of the positive electrode pin 4 and the outside of the negative electrode pin 6.

[0037] In this embodiment, the positive pin 4 and the negative pin 6 output the corresponding motors respectively, and can be connected to the circuit board through the positive pin 4 and the negative pin 6. Under the action of the sealing ring 5, the sealing of the connection between the positive pin 4, the negative pin 6 and the cover body 3 is ensured.

[0038] In a further embodiment, referring to Figure 4-Figure 6 Two positive conductive sheets 15 are fixedly connected to the outside of the positive contact sheet 11, two negative conductive sheets 18 are fixedly connected to the outside of the negative contact sheet 17, an insulating block 16 is arranged between the positive contact sheet 11 and the negative contact sheet 17, the conductive strip 13 is arranged in an L shape, a lower insulating block 16 is arranged on the inside of the conductive strip 13, and an upper insulating sheet 10 is arranged at the bottom of the arc strip 7.

[0039] In this embodiment, two positive conductive sheets 15 or negative conductive sheets 18 are arranged on the outside of the same positive contact sheet 11 or negative contact sheet 17. When one of the connections fails, the entire battery cell can still be used, which helps to improve the service life of the entire solid aluminum electrolytic capacitor.

[0040] In a further embodiment, referring to Figure 3 Two symmetrically distributed spacer bars 8 are fixedly connected to the inner side of the housing 1 , and the two ends of the spacer bars 8 are in contact with the outer sides of the two arc-shaped bars 7 respectively.

[0041] In this embodiment, the spacer bar 8 can be inside the housing 1 to limit the inserted battery cell, ensuring that the battery cell will not rotate or move inside the housing 1.

[0042] Another technical problem to be solved by the present invention is to provide a method for manufacturing a moisture-resistant laminated solid aluminum electrolytic capacitor, comprising the following steps:

[0043] S1, Contacts and Installation

[0044] The positive contact sheets 11 and the negative contact sheets 17 are alternately stacked until they are stacked to an appropriate height. When stacking, the positive conductive sheets 15 and the negative conductive sheets 18 are respectively inserted into the corresponding U-shaped slots 14, and two arc strips 7 and the conductive strips 13 are clamped on the outside of the stacked positive contact sheets 11 and negative contact sheets 17, and the upper insulating sheet 10 and the lower insulating sheet 12 are placed at the bottom of the arc strip 7 and the inside of the conductive strip 13;

[0045] S2. Installation of battery cells

[0046] Place the stacked battery cells into the housing 1 so that the two arc-shaped bars 7 are located between the two spacer bars 8, and cover them with the cover 3;

[0047] S3, moisture-proof packaging

[0048] After the cover body 3 is installed, the moisture-proof coating 2 is applied to the connection between the cover body 3 and the housing 1 by a glue coating machine to complete the manufacture of the solid aluminum electrolytic capacitor.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A moisture-resistant laminated solid aluminum electrolytic capacitor, comprising a housing (1) and a cover (3), characterized in that: The inner side of the shell (1) is provided with positive electrode contacts (11) and negative electrode contacts (17) which are staggered and distributed at equal intervals. The inner side of the shell (1) is provided with two symmetrically distributed arcuate bars (7). The bottom of the arcuate bars (7) is fixedly connected with two symmetrically distributed conductive bars (13). The inner side of the conductive bars (13) is fixedly connected with U-shaped card slots (14) which are distributed at equal intervals in a straight line. The outer side of the positive electrode contacts (11) and the outer side of the negative electrode contacts (17) are respectively provided with positive conductive sheets (15) and negative conductive sheets (18). A moisture-proof coating (2) is provided between the shell (1) and the cover body (3).

2. The moisture-resistant laminated solid aluminum electrolytic capacitor according to claim 1, characterized in that: Two symmetrically distributed gaskets (9) are fixedly connected to the top of the arc strip (7), and the top of the gasket (9) is in contact with the bottom of the cover body (3).

3. The moisture-resistant laminated solid aluminum electrolytic capacitor according to claim 1, characterized in that: A positive electrode pin (4) and a negative electrode pin (6) are respectively arranged at the top of the two arc-shaped strips (7).

4. The moisture-resistant laminated solid aluminum electrolytic capacitor according to claim 3, characterized in that: The top of the positive electrode pin (4) and the top of the negative electrode pin (6) both pass through the cover body (3), and sealing rings (5) are provided on the outside of the positive electrode pin (4) and the outside of the negative electrode pin (6).

5. The moisture-resistant laminated solid aluminum electrolytic capacitor according to claim 1, characterized in that: The two positive electrode conductive sheets (15) are fixedly connected to the outside of the positive electrode contact sheet (11), and the two negative electrode conductive sheets (18) are fixedly connected to the outside of the negative electrode contact sheet (17).

6. The moisture-resistant laminated solid aluminum electrolytic capacitor according to claim 1, characterized in that: An insulating block (16) is provided between the positive electrode contact piece (11) and the negative electrode contact piece (17).

7. The moisture-resistant laminated solid aluminum electrolytic capacitor according to claim 1, characterized in that: Two symmetrically distributed spacing bars (8) are fixedly connected to the inner side of the outer shell (1), and two ends of the spacing bars (8) are respectively in contact with the outer sides of the two arc-shaped bars (7).

8. The moisture-resistant laminated solid aluminum electrolytic capacitor according to claim 1, characterized in that: The conductive strip (13) is arranged in an L-shape, a lower insulating block (16) is arranged inside the conductive strip (13), and an upper insulating sheet (10) is arranged at the bottom of the arc strip (7).

9. A method for manufacturing a moisture-resistant laminated solid aluminum electrolytic capacitor according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, Contacts and Installation The positive contact sheets (11) and the negative contact sheets (17) are alternately stacked until they are stacked to an appropriate height. During the stacking, the positive conductive sheets (15) and the negative conductive sheets (18) are respectively inserted into the corresponding U-shaped slots (14). Two arc strips (7) and the conductive strip (13) are clamped on the outside of the stacked positive contact sheets (11) and the negative contact sheets (17), and an upper insulating sheet (10) and a lower insulating sheet (12) are placed at the bottom of the arc strip (7) and the inside of the conductive strip (13); S2. Installation of battery cells Place the stacked battery cells into the housing (1) so that the two arc-shaped bars (7) are located between the two spacer bars (8), and then cover the housing (3); S3, moisture-proof packaging After the cover body (3) is installed, a moisture-proof coating (2) is applied to the connection between the cover body (3) and the housing (1) by a glue coating machine, thereby completing the manufacture of the solid aluminum electrolytic capacitor.

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