High-reliability aluminum electrolytic capacitor

Abstract

The utility model relates to the technical field of aluminum electrolytic capacitors, and discloses a high-reliability aluminum electrolytic capacitor, which is characterized in that a support sleeve is sleeved on the outer side of a reticulated sleeve, the support sleeve abuts against one side, far away from an aluminum shell, of a heat conduction coating, the bottom of the aluminum shell is fixedly connected with a fixing ring, and the inner bottom side of the aluminum shell is fixedly connected with a heat conduction seat; the bottom of the aluminum shell is fixedly connected with a heat dissipation plate, and the bottom of the heat dissipation plate is fixedly connected with a plurality of heat dissipation columns. According to the utility model, the heat conduction coating, the heat dissipation sleeve, the heat conduction seat, the heat dissipation plate and the heat dissipation column are arranged, so that the heat dissipation of the capacitor core package can be assisted, and the heat dissipation effect of the capacitor core package is effectively improved, thereby ensuring the normal use of the capacitor, prolonging the service life of the capacitor, and ensuring the reliability of the capacitor; and the supporting sleeve and the reticulated sleeve can reinforce the structure of the aluminum shell, so that the situation that the aluminum shell is deformed due to internal heating of the capacitor, and normal use of the capacitor is affected is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum electrolytic capacitors, and particularly relates to an aluminum electrolytic capacitor with high reliability. Background Art

[0002] A capacitor, abbreviated as a capacitance, is a main component of an electronic circuit. It can store electric energy and has the characteristics of charging, discharging, passing alternating current and blocking direct current. An aluminum electrolytic capacitor is a general-purpose electrolytic capacitor made of aluminum material with good electrical performance, wide application range and high reliability. Moreover, an aluminum electrolytic capacitor is a common choice for power capacitors. However, since an aluminum electrolytic capacitor is easily affected by its own temperature rise, its life is easily shortened when its own temperature is too high, thus affecting the service life and working reliability of a power supply or other electronic devices. Therefore, an aluminum electrolytic capacitor with high reliability is proposed. Content of the Utility Model

[0003] The purpose of the utility model is to provide an aluminum electrolytic capacitor with high reliability, so as to solve the problem that the life of the aluminum electrolytic capacitor is easily shortened when its own temperature is too high due to the influence of its own temperature rise as mentioned in the above background art, thus affecting the service life and working reliability of a power supply or other electronic devices.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an aluminum electrolytic capacitor with high reliability, including an aluminum shell, and a heat dissipation component is arranged inside the aluminum shell;

[0005] The heat dissipation component includes a heat-conducting coating, a support sleeve and a reticulated sleeve. The heat-conducting coating is fixedly connected to the inner side wall of the aluminum shell. A capacitor core package is arranged inside the aluminum shell. The reticulated sleeve is sleeved outside the capacitor core package. The support sleeve is sleeved outside the reticulated sleeve. The support sleeve abuts against the side of the heat-conducting coating away from the aluminum shell. A fixing ring is fixedly connected to the bottom of the aluminum shell. A heat-conducting seat is fixedly connected to the bottom side inside the aluminum shell. A heat dissipation plate is fixedly connected to the bottom of the aluminum shell. A plurality of heat dissipation columns are fixedly connected to the bottom of the heat dissipation plate.

[0006] As a further preferred technical solution of the present technology: a rubber pad is arranged inside the aluminum shell, and a positive lead pin and a negative lead pin are respectively installed on the capacitor core package.

[0007] As a further preferred technical solution of the present technology: one ends of the positive lead pin and the negative lead pin both penetrate through the bottom of the rubber pad, and one ends of the positive lead pin and the negative lead pin extend to the outside of the top end of the aluminum shell.

[0008] As a further preferred technical solution of the present technology: the heat dissipation plate is located inside the fixing ring, and the heat-conducting seat is located below the support sleeve and the reticulated sleeve.

[0009] As a further preference of this technical solution: a heat dissipation sleeve is sleeved on the outer side of the aluminum shell, and a sleeve is arranged on the outer sides of the aluminum shell and the heat dissipation sleeve.

[0010] As a further preference of this technical solution: the capacitor core package includes an anode aluminum foil, two pieces of electrolytic paper, and a cathode aluminum foil. One piece of electrolytic paper is arranged between the anode aluminum foil and the cathode aluminum foil, and the other piece of electrolytic paper is arranged on the side of the cathode aluminum foil away from the anode aluminum foil.

[0011] As a further preference of this technical solution: the other end of the positive electrode pin is connected to the anode aluminum foil, and the other end of the negative electrode pin is connected to the cathode aluminum foil.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: through the settings of the heat conduction coating, heat dissipation sleeve, heat conduction seat, heat dissipation plate, and heat dissipation column, the present utility model can assist the capacitor core package in heat dissipation, effectively improving the heat dissipation effect of the capacitor core package to ensure the normal use of the capacitor, increasing the service life of the capacitor, ensuring the reliability of the capacitor. Moreover, the support sleeve and the reticulated sleeve can strengthen the structure of the aluminum shell, effectively preventing the aluminum shell from deforming due to internal heat of the capacitor, which affects the normal use of the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a structural schematic diagram of the present utility model;

[0015] Figure 2 It is a bottom structural schematic diagram of the present utility model;

[0016] Figure 3 It is an internal structural schematic diagram of the aluminum shell of the present utility model;

[0017] Figure 4 It is a structural schematic diagram of the capacitor core package of the present utility model;

[0018] Figure 5 It is a top structural schematic diagram of the present utility model.

[0019] Description of reference numerals: 1, sleeve; 2, aluminum shell; 3, heat-conducting coating; 4, support sleeve; 5, reticulated sleeve; 6, capacitor core package; 7, heat-dissipating sleeve; 8, fixing ring; 9, heat-conducting seat; 10, heat-dissipating plate; 11, heat-dissipating column; 12, rubber pad; 13, positive pin; 14, negative pin; 15, anode aluminum foil; 16, electrolytic paper; 17, cathode aluminum foil. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions that can be implemented in this application. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that this application can produce and the purposes that can be achieved, should still fall within the scope that the technical content disclosed in this application can cover.

[0022] Embodiment

[0023] In the prior art, since aluminum electrolytic capacitors are easily affected by their own temperature rise, when their own temperature is too high, it is easy to cause their service life to be shortened, thereby affecting the service life and working reliability of power supplies or other electronic devices.

[0024] Please refer to Figures 1-5 , the present invention provides a technical solution: an aluminum electrolytic capacitor with high reliability, including an aluminum shell 2, and a heat-dissipating component is arranged inside the aluminum shell 2.

[0025] By arranging the heat-dissipating component, the heat-dissipating effect of the capacitor core package 6 is improved to ensure the normal use of the capacitor, improve the service life of the capacitor, ensure the reliability of the capacitor, and at the same time avoid the deformation of the aluminum shell 2 when the capacitor core package 6 expands due to heat; the heat-dissipating component includes a heat-conducting coating 3, a support sleeve 4 and a reticulated sleeve 5. The heat-conducting coating 3 is fixedly connected to the inner side wall of the aluminum shell 2. A capacitor core package 6 is arranged inside the aluminum shell 2. The reticulated sleeve 5 is sleeved outside the capacitor core package 6. The support sleeve 4 is sleeved outside the reticulated sleeve 5. The support sleeve 4 and the reticulated sleeve 5 can limit the capacitor core package 6 and prevent the aluminum shell 2 from deforming due to the thermal expansion of the capacitor core package 6.

[0026] The support sleeve 4 abuts against the side of the heat-conducting coating 3 away from the aluminum shell 2. A fixing ring 8 is fixedly connected to the bottom of the aluminum shell 2. A heat-conducting seat 9 is fixedly connected to the inner bottom side of the aluminum shell 2. A heat-dissipating plate 10 is fixedly connected to the bottom of the aluminum shell 2. A plurality of heat-dissipating columns 11 are fixedly connected to the bottom of the heat-dissipating plate 10. The heat-dissipating plate 10 is located inside the fixing ring 8. The heat-conducting seat 9 is located below the support sleeve 4 and the reticulated sleeve 5. A heat-dissipating sleeve 7 is sleeved on the outer side of the aluminum shell 2. A sleeve 1 is arranged on the outer sides of the aluminum shell 2 and the heat-dissipating sleeve 7. The heat-conducting coating 3 can conduct the heat generated by the capacitor core package 6 inside the aluminum shell 2, and then dissipate the heat through the heat-dissipating sleeve 7; the heat can be conducted through the heat-conducting seat 9, and the heat-conducting seat 9 conducts the heat to the heat-dissipating plate 10. Through the plurality of heat-dissipating columns 11 on the heat-dissipating plate 10, the heat-conducting seat 9 can be assisted in dissipating heat, thereby improving the heat dissipation effect of the capacitor core package 6.

[0027] A rubber pad 12 is arranged inside the aluminum shell 2. A positive pin 13 and a negative pin 14 are respectively installed on the capacitor core package 6. One ends of the positive pin 13 and the negative pin 14 both penetrate through the bottom of the rubber pad 12. The positive pin 13 and the negative pin 14 facilitate the installation of the capacitor; one ends of the positive pin 13 and the negative pin 14 extend to the outside of the top of the aluminum shell 2, and the rubber pad 12 can seal the aluminum shell 2.

[0028] The capacitor core package 6 includes an anode aluminum foil 15, two electrolytic papers 16, and a cathode aluminum foil 17. One electrolytic paper 16 is arranged between the anode aluminum foil 15 and the cathode aluminum foil 17, and the other electrolytic paper 16 is arranged on the side of the cathode aluminum foil 17 away from the anode aluminum foil 15. The other end of the positive pin 13 is connected to the anode aluminum foil 15, and the other end of the negative pin 14 is connected to the cathode aluminum foil 17. The anode aluminum foil 15, one electrolytic paper 16, the cathode aluminum foil 17, and the other electrolytic paper 16 are stacked and wound in sequence to form the capacitor core package 6.

[0029] In terms of the working principle or structural principle, when the aluminum electrolytic capacitor is in use, the structure of the aluminum shell 2 can be strengthened through the support sleeve 4 and the reticulated sleeve 5, effectively preventing the aluminum shell 2 from deforming due to heat inside the capacitor, which affects the normal use of the capacitor. Through the settings of the heat-conducting coating 3 and the heat-dissipating sleeve 7, the heat-conducting coating 3 can conduct the heat generated by the capacitor core package 6 inside the aluminum shell 2, and then dissipate the heat through the heat-dissipating sleeve 7, thereby completing the heat dissipation of the capacitor core package 6. At the same time, the heat can be conducted through the heat-conducting seat 9, and the heat-conducting seat 9 conducts the heat to the heat-dissipating plate 10. Through the plurality of heat-dissipating columns 11 on the heat-dissipating plate 10, the heat-conducting seat 9 can be assisted in dissipating heat, thereby improving the heat dissipation effect of the capacitor core package 6 to ensure the normal use of the capacitor and improve the service life of the capacitor.

[0030] So far, the embodiments of the present utility model have been described in detail with reference to the accompanying drawings. It should be noted that in the accompanying drawings or the main text of the specification, the implementation manners that are not illustrated or described are all forms known to those of ordinary skill in the art and have not been described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or manners mentioned in the embodiments, and those of ordinary skill in the art can make simple changes or replacements to them.

[0031] Those skilled in the art can understand that the features recited in the various embodiments and / or claims of the present utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly recited in the present utility model. In particular, without departing from the spirit and teachings of the present utility model, the features recited in the various embodiments and / or claims of the present utility model can be combined and combined in various ways. All such combinations and / or combinations fall within the scope of the present utility model.

[0032] The above specific embodiments have further elaborated on the purpose, technical solutions and beneficial effects of the present utility model. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An aluminum electrolytic capacitor with high reliability, comprising an aluminum shell (2), characterized in that: A heat dissipation component is arranged inside the aluminum shell (2); The heat dissipation component includes a heat conduction coating (3), a support sleeve (4) and a reticulated sleeve (5). The heat conduction coating (3) is fixedly connected to the inner side wall of the aluminum shell (2). A capacitor core package (6) is arranged inside the aluminum shell (2). The reticulated sleeve (5) is sleeved on the outer side of the capacitor core package (6). The support sleeve (4) is sleeved on the outer side of the reticulated sleeve (5). The support sleeve (4) abuts against the side of the heat conduction coating (3) away from the aluminum shell (2). A fixing ring (8) is fixedly connected to the bottom of the aluminum shell (2). A heat conduction seat (9) is fixedly connected to the bottom side inside the aluminum shell (2). A heat dissipation plate (10) is fixedly connected to the bottom of the aluminum shell (2). A plurality of heat dissipation columns (11) are fixedly connected to the bottom of the heat dissipation plate (10).

2. The highly reliable aluminum electrolytic capacitor according to claim 1, wherein: A rubber pad (12) is arranged inside the aluminum shell (2). A positive pin (13) and a negative pin (14) are respectively installed on the capacitor core package (6).

3. The highly reliable aluminum electrolytic capacitor according to claim 2, wherein: One end of each of the positive pin (13) and the negative pin (14) penetrates through the bottom of the rubber pad (12). One end of the positive pin (13) and the negative pin (14) extends to the outside of the top of the aluminum shell (2).

4. A highly reliable aluminum electrolytic capacitor according to claim 1, characterized in that: The heat dissipation plate (10) is located inside the fixing ring (8). The heat conduction seat (9) is located below the support sleeve (4) and the reticulated sleeve (5).

5. A highly reliable aluminum electrolytic capacitor according to claim 1, characterized in that: A heat dissipation sleeve (7) is sleeved on the outer side of the aluminum shell (2). A sleeve (1) is arranged on the outer sides of the aluminum shell (2) and the heat dissipation sleeve (7).

6. The highly reliable aluminum electrolytic capacitor according to claim 3, wherein: The capacitor core package (6) includes an anode aluminum foil (15), two electrolytic papers (16) and a cathode aluminum foil (17). One of the electrolytic papers (16) is arranged between the anode aluminum foil (15) and the cathode aluminum foil (17). The other electrolytic paper (16) is arranged on the side of the cathode aluminum foil (17) away from the anode aluminum foil (15).

7. The highly reliable aluminum electrolytic capacitor according to claim 6, characterized in that: The other end of the positive pin (13) is connected to the anode aluminum foil (15). The other end of the negative pin (14) is connected to the cathode aluminum foil (17).

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