A lead-type electrolytic capacitor

Abstract

The utility model relates to capacitor technical field discloses a lead type electrolytic capacitor, including aluminium shell and capacitor core, the top of capacitor core is equipped with anode guide post and cathode guide post, and the top of anode guide post and cathode guide post is connected with anode pin and cathode pin respectively, and the opening of aluminium shell is equipped with the apron, the bottom of aluminium shell is placed with the locating seat, and the heat conducting silicone grease is established between capacitor core and aluminium shell inner wall, the through slot that the apron top surface is established with anode guide post and cathode guide post is adapted is seted up, the fixed groove is established in the through slot, and the sealing ring of the sleeve is established in the anode guide post and cathode guide post outside in the fixed groove, and the sealing plate is fixedly connected with the apron top in aluminium shell inside, the heat conduction plate is connected with the aluminium shell bottom, and the heat dissipation piece of multiple fixed attachments has in the heat conduction plate. The utility model is convenient for the welding of pin, and the sealing performance and the heat dissipation effect of capacitor are improved, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, specifically a leaded electrolytic capacitor. Background Technology

[0002] Electrolytic capacitors have a strong energy storage capacity. Electrolytic capacitors (capacitors that use electrolyte as cathode) have a huge capacity, even reaching the level of farads, hundreds or thousands of farads. This makes them very suitable for occasions that require energy storage and instantaneous and repeated energy release.

[0003] Leaded electrolytic capacitors have two leads (or pins), which are soldered into holes on the circuit board during use. Leaded electrolytic capacitors are characterized by their small size, large capacitance range, and wide voltage range, typically between 6.3V and 450V, and between 0.1uF and 22000uF, making them widely applicable. Because leaded electrolytic capacitors contain electrolyte, they require high sealing performance. Installing the two leads into the sealing plug inside the capacitor can be difficult and can easily lead to a decrease in sealing performance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned technical defects and provide a leaded electrolytic capacitor.

[0005] To solve the above problems, the technical solution of this utility model is as follows: a leaded electrolytic capacitor, including an aluminum shell and a capacitor core, wherein the top of the capacitor core is provided with an anode post and a cathode post, and the top of the anode post and the cathode post are respectively connected to an anode pin and a cathode pin, and the opening of the aluminum shell is provided with a cover plate;

[0006] A positioning seat is placed at the bottom of the aluminum shell. Thermal grease is provided between the capacitor core and the inner wall of the aluminum shell. A through groove adapted to the anode and cathode guide posts is opened on the cover plate. A fixing groove is opened at the through groove on the top surface of the cover plate. A sealing ring sleeved on the outside of the anode and cathode guide posts is provided in the fixing groove. A sealing plate is fixedly connected to the inside of the aluminum shell above the cover plate.

[0007] A heat-conducting plate is connected to the bottom of the aluminum shell, and multiple heat dissipation components are fixed on the heat-conducting plate.

[0008] Furthermore, a sleeve is fitted onto the outer side of the aluminum shell.

[0009] Furthermore, a limiting ring is fitted at the top edge of the capacitor core, and the limiting ring is attached to the inner wall of the aluminum shell.

[0010] Furthermore, the sealing plate is formed by potting epoxy resin onto the top of the cover plate.

[0011] Furthermore, the sealing ring and the sealing plate are integrally formed.

[0012] Furthermore, the heat-conducting plate is installed on the bottom of the aluminum casing with an adhesive, and the heat sink has a cylindrical structure.

[0013] Furthermore, an explosion-proof valve is provided in the middle of the cover plate.

[0014] The advantages of this invention compared to existing technologies are as follows: the design of the fixing groove and the through groove facilitates the welding of the anode and cathode guide posts to the anode and cathode pins; the setting of the cover plate, sealing plate and sealing ring can effectively improve the sealing performance of the capacitor; and the setting of the heat-conducting plate and heat dissipation component can effectively increase the heat dissipation area, thereby improving the heat dissipation effect of the capacitor. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] As shown in the figure: 1. Aluminum shell; 2. Capacitor core; 3. Anode guide post; 4. Cathode guide post; 5. Anode pin; 6. Cathode pin; 7. Cover plate; 8. Positioning seat; 9. Thermal grease; 10. Sealing ring; 11. Sealing plate; 12. Heat-conducting plate; 13. Heat sink; 14. Sleeve; 15. Limiting ring; 16. Explosion-proof valve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1 to 2 As shown, a leaded electrolytic capacitor includes an aluminum shell 1 and a capacitor core 2. The top of the capacitor core 2 is provided with an anode post 3 and a cathode post 4. The top of the anode post 3 and the cathode post 4 are respectively connected to an anode pin 5 and a cathode pin 6. The opening of the aluminum shell 1 is provided with a cover plate 7. The outer side of the aluminum shell 1 is covered with a sleeve 14. The middle of the cover plate 7 is provided with an explosion-proof valve 16.

[0020] The design of the explosion-proof valve 16 can improve the safety of capacitor use.

[0021] A positioning seat 8 is placed at the bottom of the aluminum shell 1. Thermal grease 9 is provided between the capacitor core 2 and the inner wall of the aluminum shell 1. A limiting ring 15 is fitted at the top edge of the capacitor core 2 and fits against the inner wall of the aluminum shell 1. A through groove is provided on the cover plate 7 to match the anode guide post 3 and the cathode guide post 4. A fixing groove is provided on the top surface of the cover plate 7 at the through groove. A sealing ring 10 is provided in the fixing groove and fitted on the outside of the anode guide post 3 and the cathode guide post 4. A sealing plate 11 is fixedly connected to the inside of the aluminum shell 1 above the cover plate 7. The sealing plate 11 is formed by filling the top of the cover plate 7 with epoxy resin. The sealing ring 10 and the sealing plate 11 are integrally formed.

[0022] The positioning seat 8 allows the capacitor core 2 to be placed in the center of the aluminum shell 1. The limiting ring 15 can prevent the capacitor core 2 from tilting, further ensuring that the capacitor core 2 is in the center of the aluminum shell 1. The thermal grease 9 facilitates the rapid transfer of heat generated by the capacitor core 2 to the aluminum shell 1 for heat dissipation.

[0023] The design of the fixed groove and through groove facilitates the welding of the anode guide post 3 and cathode guide post 4 to the anode pin 5 and cathode pin 6. The setting of cover plate 7, sealing plate 11 and sealing ring 10 can effectively improve the sealing performance of the capacitor.

[0024] A heat-conducting plate 12 is connected to the bottom of the aluminum shell 1. Multiple heat dissipation components 13 are fixed on the heat-conducting plate 12. The heat-conducting plate 12 is installed at the bottom of the aluminum shell 1 by adhesive. The heat dissipation components 13 are cylindrical structures.

[0025] The arrangement of the heat-conducting plate 12 and the heat sink 13 can effectively increase the heat dissipation area, thereby increasing the heat dissipation rate of the capacitor.

[0026] The parts not disclosed in this utility model are all prior art, and their specific structures and working principles will not be described in detail.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A leaded electrolytic capacitor, comprising an aluminum casing (1) and a capacitor core (2), wherein the top of the capacitor core (2) is provided with an anode post (3) and a cathode post (4), the top of the anode post (3) and the cathode post (4) are respectively connected to an anode pin (5) and a cathode pin (6), and the opening of the aluminum casing (1) is provided with a cover plate (7), characterized in that: A positioning seat (8) is placed at the bottom of the aluminum shell (1). Thermal grease (9) is provided between the capacitor core (2) and the inner wall of the aluminum shell (1). A through groove adapted to the anode guide post (3) and the cathode guide post (4) is opened on the cover plate (7). A fixing groove is opened at the through groove on the top surface of the cover plate (7). A sealing ring (10) is provided in the fixing groove and sleeved on the outside of the anode guide post (3) and the cathode guide post (4). A sealing plate (11) is fixedly connected to the inside of the aluminum shell (1) above the cover plate (7). The bottom of the aluminum shell (1) is connected to a heat-conducting plate (12), and multiple heat dissipation components (13) are fixed on the heat-conducting plate (12).

2. The leaded electrolytic capacitor according to claim 1, characterized in that: The aluminum shell (1) is fitted with a sleeve (14) on its outer side.

3. A leaded electrolytic capacitor according to claim 1, characterized in that: A limiting ring (15) is fitted at the top edge of the capacitor core (2), and the limiting ring (15) is attached to the inner wall of the aluminum shell (1).

4. A leaded electrolytic capacitor according to claim 1, characterized in that: The sealing plate (11) is formed by potting epoxy resin on top of the cover plate (7).

5. A leaded electrolytic capacitor according to claim 4, characterized in that: The sealing ring (10) and the sealing plate (11) are integrally formed.

6. A leaded electrolytic capacitor according to claim 1, characterized in that: The heat-conducting plate (12) is installed at the bottom of the aluminum shell (1) by an adhesive, and the heat sink (13) is a cylindrical structure.

7. A leaded electrolytic capacitor according to claim 1, characterized in that: An explosion-proof valve (16) is provided in the middle of the cover plate (7).

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