Improved aluminum electrolytic capacitor

Abstract

The utility model discloses an improved aluminum electrolytic capacitor, comprising a capacitor unit which comprises a capacitor, a Y-shaped pressure relief groove is pressed at the center of the top of the capacitor, an improved unit which comprises a rubber ring fixedly sleeved on the side wall of the capacitor, the top of the rubber ring is fixedly connected with a telescopic sleeve sleeved on the capacitor, and the top of the rubber ring is fixedly connected with the telescopic sleeve. The top of the telescopic sleeve is fixedly connected with a rubber sheet, the rubber sheet is in a dome shape, and the rubber sheet is tightly attached to the top of the capacitor. When the Y-shaped pressure relief groove of the capacitor is broken, electrolyte is sprayed out from the top of the capacitor, the telescopic sleeve and the rubber sheet are utilized to prevent the electrolyte from splashing all around, and the telescopic sleeve can stretch out and draw back to store the overflowed electrolyte, so that the electrolyte of the improved capacitor does not pollute electronic elements.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, and in particular to an improved aluminum electrolytic capacitor. Background Technology

[0002] Aluminum electrolytic capacitors are made by inserting a bent aluminum strip as the positive electrode into an aluminum cylinder as the negative electrode, which contains liquid electrolyte. They also require DC voltage treatment to form an oxide film on the positive electrode as the dielectric. They are characterized by large capacity, but also have high leakage current and poor stability. They have positive and negative polarity and are suitable for power supply filtering or low-frequency circuits. When using them, the positive and negative terminals should not be reversed.

[0003] Aluminum electrolytic capacitors typically have three grooves pressed into their tops. These grooves are designed to cause the top of the capacitor to rupture first when the internal pressure is too high, thereby releasing the internal pressure and preventing the capacitor from exploding. During the pressure relief process, electrolyte will spray out from the top of the capacitor. Since some capacitors are located near electronic components on a circuit board, when the electrolyte leaks, the sprayed electrolyte will contaminate the electronic components on the circuit board, which may cause circuit board failure and damage to the electronic components. Therefore, an improved aluminum electrolytic capacitor is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the above-mentioned improved aluminum electrolytic capacitor, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide an improved aluminum electrolytic capacitor, which is suitable for solving the problem that when the electrode liquid leaks, the electrolyte sprayed out by the capacitor will contaminate the electronic components on the circuit board, which may cause circuit board failure and damage to the electronic components.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an improved aluminum electrolytic capacitor, comprising:

[0008] A capacitor unit, comprising a capacitor, wherein a Y-shaped pressure relief groove is pressed at the center of the top of the capacitor;

[0009] The improved unit includes a rubber ring fixedly fitted onto the side wall of a capacitor, a telescopic sleeve fitted onto the capacitor fixedly connected to the top of the rubber ring, and a rubber sheet fixedly connected to the top of the telescopic sleeve. The rubber sheet is dome-shaped and fits tightly against the top of the capacitor.

[0010] As a preferred embodiment of the improved aluminum electrolytic capacitor of this utility model, the top of the rubber sheet is provided with a dome plate, the bottom of the dome plate is fixedly connected with two Z-shaped plates, and the side wall of the capacitor is fixedly connected with two gate-shaped iron plates, with the two Z-shaped plates passing through the corresponding gate-shaped iron plates respectively.

[0011] As a preferred embodiment of the improved aluminum electrolytic capacitor of this utility model, wherein: one side of each of the two Z-shaped plates is fixedly connected to a protrusion located below the gate-shaped iron sheet, and the lower surface of each of the two protrusions is provided with rounded corners.

[0012] In a preferred embodiment of the improved aluminum electrolytic capacitor described in this utility model, two limiting rings are fixedly connected to the side wall of the capacitor, and a metal ring located between the two limiting rings is slidably sleeved on the outer wall of the capacitor. The side wall of the metal ring has multiple sets of through holes.

[0013] In a preferred embodiment of the improved aluminum electrolytic capacitor described in this utility model, the side wall of the telescopic sleeve is fixedly connected to a drain pipe, and the bottom end of the drain pipe is sealed.

[0014] In a preferred embodiment of the improved aluminum electrolytic capacitor described in this utility model, two rubber blocks are fixedly connected to the side wall of the capacitor, and the drain pipe slides through the two rubber blocks.

[0015] The beneficial effects of this invention are as follows: When the Y-shaped pressure relief groove of the capacitor breaks, the electrolyte sprays out from the top of the capacitor. The telescopic sleeve and rubber sheet can prevent the electrolyte from splashing everywhere. The telescopic sleeve can expand and contract to store the overflowing electrolyte, so that the electrolyte of the improved capacitor will not contaminate the electronic components. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of the improved aluminum electrolytic capacitor proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the improved unit structure proposed in this utility model;

[0019] Figure 3 This is an exploded view of the connection between the rubber roll and the telescopic sleeve proposed in this utility model;

[0020] Figure 4 This is a cross-sectional view of the rubber sheet and dome plate proposed in this utility model. Attached image description:

[0022] 100. Capacitor unit; 101. Capacitor; 102. Y-shaped pressure relief groove; 200. Improved unit; 201. Rubber ring; 202. Telescopic sleeve; 203. Rubber sheet; 204. Dome plate; 205. Z-shaped plate; 206. Gate-shaped iron sheet; 207. Protrusion; 208. Limiting ring; 209. Metal ring; 210. Through hole; 211. Drain pipe; 212. Rubber block. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] Example

[0028] Reference Figures 1-4 As one embodiment of the present invention, an improved aluminum electrolytic capacitor is provided, comprising: a capacitor unit 100 and an improved unit 200;

[0029] The capacitor unit 100 includes a capacitor 101, and a Y-shaped pressure relief groove 102 is pressed at the center of the top of the capacitor 101.

[0030] The improved unit 200 includes a rubber ring 201 fixedly sleeved on the side wall of the capacitor 101. A telescopic sleeve 202 sleeved on the capacitor 101 is fixedly connected to the top of the rubber ring 201. A rubber sheet 203 is fixedly connected to the top of the telescopic sleeve 202. The rubber sheet 203 is dome-shaped and is in close contact with the top of the capacitor 101.

[0031] The Y-shaped pressure relief groove 102 at the top of the capacitor 101 is used for pressure relief. When the internal pressure of the capacitor 101 increases, the Y-shaped pressure relief groove 102 of the capacitor 101 is ruptured, thereby relieving pressure and preventing the capacitor 101 from exploding. The connection between the rubber ring 201, the telescopic sleeve 202, and the rubber sheet 203 is sealed. The rubber ring 201, the telescopic sleeve 202, and the rubber sheet 203 can be made of high-temperature resistant rubber materials such as fluororubber and silicone rubber. The rubber ring 201 is close to the top of the capacitor 101. The telescopic sleeve 202 can expand and contract. The telescopic sleeve 202 contracts through its own elasticity, so that its rubber sheet 203 is attached to the top of the capacitor 101. When the top of the capacitor 101 breaks, the electrolyte is sprayed out from the Y-shaped pressure relief groove 102, and then the electrolyte comes into contact with the rubber sheet 203.

[0032] The rubber sheet 203 is dome-shaped and thicker in the middle, allowing it to withstand the pressure of the electrolyte and preventing it from splashing outwards from the top of the capacitor 101. As the electrolyte inside the telescopic sleeve 202 increases, the sleeve expands and stretches to store more electrolyte, ensuring that the electrolyte in the improved capacitor 101 does not contaminate the electronic components on the circuit board and facilitating easy replacement of the capacitor 101 by the user.

[0033] In addition, a dome plate 204 is provided on the top of the rubber sheet 203, and two Z-shaped plates 205 are fixedly connected to the bottom of the dome plate 204. Two gate-shaped iron plates 206 are fixedly connected to the side wall of the capacitor 101. The two Z-shaped plates 205 pass through the corresponding gate-shaped iron plates 206 respectively. A protrusion 207 located below the gate-shaped iron plate 206 is fixedly connected to one side of each of the two Z-shaped plates 205. The lower surface of the two protrusions 207 is rounded.

[0034] Two Z-shaped plates 205 are in close contact with two gate-shaped iron plates 206 respectively, so that the Z-shaped plates 205 will not slide directly off the gate-shaped iron plates 206. When the electrolyte leaks, the rubber sheet 203 will move upward and onto the dome plate 204. The bottom of the dome plate 204 is a circular concave surface, which can fit the top of the rubber sheet 203. The dome plate 204 can protect the rubber sheet 203 to prevent the electrolyte from concentrating at one point and puncturing the rubber sheet 203. When the dome plate 204 is pressed upward, the Z-shaped plates 205 will slide upward along the inner wall of the gate-shaped iron plates 206. Through the resistance of the gate-shaped iron plates 206 and the Z-shaped plates 205, the electrode liquid will not directly push the dome plate 204.

[0035] The protrusion 207 is used to prevent the Z-shaped plate 205 from detaching from the portal iron plate 206. When the top of the protrusion 207 contacts the portal iron plate 206, the Z-shaped plate 205 is restricted by the protrusion 207. The lower surfaces of both protrusions 207 are provided with rounded corners. The portal iron plate 206 has a certain bending deformation capacity. When the user inserts the Z-shaped plate 205 into the portal iron plate 206, the protrusion 207 can pass through the portal iron plate 206 through the rounded corners.

[0036] Furthermore, two limiting rings 208 are fixedly connected to the side wall of the capacitor 101, and a metal ring 209 located between the two limiting rings 208 is slidably sleeved on the outer wall of the capacitor 101. Multiple sets of through holes 210 are opened on the side wall of the metal ring 209.

[0037] Two limiting rings 208 are used to limit the metal ring 209. The limiting rings 208 are used to prevent the capacitor 101 from expanding from the side, so as to ensure that the side wall of the capacitor 101 will not leak due to excessive expansion. The pressure is mainly applied to the Y-shaped pressure relief groove 102 and will break the top of the capacitor 101. When the internal pressure of the capacitor 101 is large enough to expand, the capacitor 101 will expand the metal ring 209, causing the metal ring 209 to break through the through hole 210. Thus, the pressure of the capacitor 101 can be judged by the state of the metal ring 209 before leakage occurs. When the metal ring 209 breaks, the capacitor 101 needs to be stopped to avoid accidents.

[0038] Furthermore, the side wall of the telescopic sleeve 202 is fixedly connected to a drain pipe 211, the bottom end of the drain pipe 211 is sealed, and the side wall of the capacitor 101 is fixedly connected to two rubber blocks 212, through which the drain pipe 211 slides.

[0039] The drain pipe 211 is used to drain the electrolyte stored inside the telescopic sleeve 202. After the capacitor 101 is depressurized, some electrolyte will be stored inside the telescopic sleeve 202. During the depressurization process of the capacitor 101, the pressure inside the telescopic sleeve 202 increases. When the pressure is too high, the telescopic sleeve 202 may expand. By cutting off the sealed end of the drain pipe 211, the pressure and electrolyte can be manually discharged to avoid the telescopic sleeve 202 being punctured accidentally. The rubber block 212 is used to limit the drain pipe 211 so that the drain pipe 211 is close to the side wall of the capacitor 101. When the drain pipe 211 is needed, it can be pulled out from the rubber block 212.

[0040] During use, the pressure of capacitor 101 is judged by the state of metal ring 209. When metal ring 209 breaks, capacitor 101 needs to be stopped to avoid accidents. When the internal pressure of capacitor 101 increases, the Y-shaped pressure relief groove 102 of capacitor 101 is ruptured to release pressure. Electrolyte is sprayed out from the Y-shaped pressure relief groove 102 and then comes into contact with rubber sheet 203, so that the electrolyte will not splash in all directions on the top of capacitor 101. The dome plate 204 can protect rubber sheet 203 to prevent electrolyte from concentrating at one point and puncturing rubber sheet 203. When dome plate 204 is squeezed upward, Z-shaped plate 205 will slide upward along the inner wall of gate-shaped iron sheet 206. The resistance of gate-shaped iron sheet 206 and Z-shaped plate 205 prevents the electrode liquid from being directly pushed onto dome plate 204.

[0041] As the electrolyte inside the telescopic sleeve 202 increases, the telescopic sleeve 202 expands and is stretched to ensure that more electrolyte can be stored. After the capacitor 101 is depressurized, the drain pipe 211 is pulled out from the rubber block 212 and the sealed end of the drain pipe 211 is cut off. Then the electrolyte is manually drained from the telescopic sleeve 202.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An improved aluminum electrolytic capacitor, characterized in that, include: A capacitor unit (100) includes a capacitor (101) with a Y-shaped pressure relief groove (102) pressed at the center of the top of the capacitor (101); The improved unit (200) includes a rubber ring (201) fixedly sleeved on the side wall of the capacitor (101), a telescopic sleeve (202) sleeved on the capacitor (101) is fixedly connected to the top of the rubber ring (201), and a rubber sheet (203) is fixedly connected to the top of the telescopic sleeve (202). The rubber sheet (203) is dome-shaped and is in close contact with the top of the capacitor (101).

2. An improved aluminum electrolytic capacitor according to claim 1, characterized in that: The top of the rubber sheet (203) is provided with a dome plate (204), and two Z-shaped plates (205) are fixedly connected to the bottom of the dome plate (204). Two gate-shaped iron plates (206) are fixedly connected to the side wall of the capacitor (101), and the two Z-shaped plates (205) pass through the corresponding gate-shaped iron plates (206).

3. An improved aluminum electrolytic capacitor according to claim 2, characterized in that: One side of each of the two Z-shaped plates (205) is fixedly connected to a protrusion (207) located below the gate-shaped iron sheet (206), and the lower surface of each of the two protrusions (207) is provided with rounded corners.

4. An improved aluminum electrolytic capacitor according to claim 2, characterized in that: The capacitor (101) has two limiting rings (208) fixedly connected to its side wall. The outer wall of the capacitor (101) is slidably fitted with a metal ring (209) located between the two limiting rings (208). The side wall of the metal ring (209) has multiple sets of through holes (210).

5. An improved aluminum electrolytic capacitor according to claim 1, characterized in that: The side wall of the telescopic sleeve (202) is fixedly connected to a drain pipe (211), and the bottom end of the drain pipe (211) is sealed.

6. An improved aluminum electrolytic capacitor according to claim 5, characterized in that: Two rubber blocks (212) are fixedly connected to the side wall of the capacitor (101), and the drain pipe (211) slides through the two rubber blocks (212).

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