A capacitor heat dissipation structure
By designing thermally conductive structures on the upper and lower shells of the capacitor, combined with liquid circulation cooling, the problem of poor heat dissipation of the capacitor is solved, thus extending the service life of the capacitor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO QUANHE ELECTRONICS CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-14
AI Technical Summary
Existing capacitors have poor heat dissipation, and long-term high-temperature environments cause internal components to age, shortening their service life.
A capacitor heat dissipation structure was designed, including an upper shell and a lower shell, with a heat-conducting component on the inner side. The upper shell and the lower shell are connected by an installation component, so that the heat-conducting component is in close contact with the capacitor body. Water pipes are connected through water inlet and water outlet connectors to achieve liquid circulation heat dissipation.
This improves the heat dissipation of the capacitor, reduces performance degradation caused by high temperatures, and extends its service life.
Smart Images

Figure CN224501692U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of capacitor technology, and in particular to a capacitor heat dissipation structure. Background Technology
[0002] A capacitor is an electronic component that stores electric charge. It consists of two electrodes and an intermediate dielectric. Its core parameter is capacitance (unit: farad). According to the dielectric, it is classified into ceramic, electrolytic, and thin film types. Electrolytic capacitors are polarized, while ceramic capacitors are suitable for high frequencies and are often used in circuits for filtering, coupling, and energy storage. Their performance directly affects the stability of the circuit.
[0003] In daily operation, it has been found that existing capacitors inevitably generate heat during operation, leading to an overall temperature increase. This is especially true in hot weather, where the already high ambient temperature further exacerbates the heating phenomenon. Current heat dissipation methods rely on heat exchange between the capacitor and the surrounding air, which is inefficient and ineffective in quickly dissipating the heat generated by the capacitor. Prolonged exposure to high temperatures accelerates the aging of internal components, such as electrolyte evaporation and deterioration of insulation material performance. This not only leads to performance degradation but also significantly shortens the capacitor's lifespan. Utility Model Content
[0004] The purpose of this invention is to solve the problems of poor heat dissipation in the prior art, which can accelerate the aging of internal components of capacitors and greatly shorten their service life under long-term high-temperature environments, and to propose a capacitor heat dissipation structure.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a capacitor heat dissipation structure, including a heat dissipation device disposed on the surface of a capacitor body, wherein a terminal body is mounted on the capacitor body; the heat dissipation device includes an upper shell and a lower shell, the upper shell and the lower shell being located on the upper and lower sides of the capacitor body respectively, and cavities being formed in the inner walls of both the upper shell and the lower shell; heat-conducting components are fixedly connected to the inner sides of both the upper shell and the lower shell; an installation assembly is provided between the upper shell and the lower shell for connecting the upper shell and the lower shell, so that the heat-conducting components are in contact with the surface of the capacitor body; a water inlet connector and a water outlet connector are fixedly connected to the surfaces of the upper shell and the lower shell respectively; an auxiliary tube is fixedly connected to the surface of the upper shell, one end of the auxiliary tube being rotatably connected to a threaded sleeve; a connector is fixedly connected to the surface of the lower shell, and the threaded sleeve is threadedly connected to the connector.
[0006] Preferably, the heat-conducting component includes multiple connecting plates fixed to the inner sides of the upper and lower shells, and the surfaces of the multiple connecting plates are fixedly connected with adhesive plates.
[0007] Preferably, an extension plate is fixedly connected to the surface of the connecting plate, and the extension plate extends into the cavities of the upper shell and the lower shell respectively.
[0008] Preferably, the mounting assembly includes a plurality of threaded posts fixed to the surface of the lower shell, the threaded posts penetrating the upper shell, and nuts being threaded onto the surface of the threaded posts.
[0009] Preferably, a rotating ring is rotatably connected to the inner wall of the nut, a connecting band is fixedly connected to the surface of the rotating ring, and the other end of the connecting band is fixedly connected to the surface of the lower shell.
[0010] Preferably, a plurality of positioning rings are fixedly connected to the upper and lower surfaces of the capacitor body, and the surface of the bonding plate is provided with positioning holes for the positioning rings to be inserted.
[0011] Preferably, the bonding plate, connecting plate, and extension plate are all made of copper.
[0012] Preferably, both the upper and lower shells have grooves on their surfaces for inserting auxiliary tubes, and the inner walls of the grooves are fixedly connected to two protrusions that restrict the auxiliary tubes.
[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0014] In this invention, by setting up a heat dissipation device, the upper and lower shells can be assembled by installing components, so that the heat-conducting parts on the inner side of both shells are in contact with the surface of the capacitor body to conduct heat to the capacitor body. Water pipes are connected to the inlet and outlet water connectors, and with the help of auxiliary pipes and connectors, liquid enters the cavity in the upper and lower shells to achieve an overall heat dissipation effect, reduce the performance degradation of the capacitor due to high temperature, and improve the overall service life.
[0015] In this invention, the heat-conducting component consists of a bonding plate, a connecting plate, and an extension plate, with the extension plate located in the cavities of the upper and lower shells, thereby improving the overall heat dissipation effect.
[0016] In this invention, the grooves on the surfaces of the upper and lower shells allow for the insertion of an auxiliary tube, and the two protrusions then restrict the auxiliary tube, reducing the likelihood of it moving out of the groove. Attached Figure Description
[0017] Figure 1 This utility model provides a three-dimensional structural diagram of a capacitor heat dissipation structure;
[0018] Figure 2 This utility model provides a partial structural diagram of a capacitor heat dissipation structure.
[0019] Figure 3 This utility model provides a schematic diagram of a heat dissipation device for a capacitor heat dissipation structure.
[0020] Figure 4 This utility model presents a schematic diagram of a heat dissipation device for a capacitor heat dissipation structure from another perspective.
[0021] Figure 5 This utility model provides a cross-sectional view of an auxiliary device for a capacitor heat dissipation structure.
[0022] Legend:
[0023] 1. Capacitor body; 2. Terminal body; 3. Heat dissipation device; 31. Upper shell; 32. Lower shell; 33. Heat-conducting component; 331. Adhesive plate; 332. Connecting plate; 333. Extension plate; 34. Mounting assembly; 341. Threaded post; 342. Nut; 343. Rotating ring; 344. Connecting strip; 35. Auxiliary tube; 36. Groove; 37. Protrusion; 38. Positioning ring; 39. Positioning hole; 310. Water inlet connector; 311. Water outlet connector; 312. Connector; 313. Threaded sleeve. Detailed Implementation
[0024] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a capacitor heat dissipation structure, including a capacitor body 1, a terminal body 2 and a heat dissipation device 3, wherein the terminal body 2 is mounted on the surface of the capacitor body 1 and the heat dissipation device 3 is disposed on the surface of the capacitor body 1.
[0025] Specifically, the heat dissipation device 3 includes an upper shell 31 and a lower shell 32, which are located on the upper and lower sides of the capacitor body 1, respectively. The inner walls of the upper shell 31 and the lower shell 32 are provided with cavities. The inner sides of the upper shell 31 and the lower shell 32 are fixedly connected with heat-conducting components 33. An installation assembly 34 is provided between the upper shell 31 and the lower shell 32 to connect the upper shell 31 and the lower shell 32, so that the heat-conducting components 33 are in contact with the surface of the capacitor body 1. The surfaces of the upper shell 31 and the lower shell 32 are fixedly connected with a water inlet connector 310 and a water outlet connector 311, respectively. An auxiliary tube 35 is fixedly connected to the surface of the upper shell 31. One end of the auxiliary tube 35 is rotatably connected with a threaded sleeve 313. The surface of the lower shell 32 is fixedly connected with a connector 312. The threaded sleeve 313 and the connector 312 are threadedly connected.
[0026] In this embodiment: During heat conduction, the upper shell 31 and the lower shell 32 are connected by the mounting assembly 34, so that the heat-conducting element 33 in the upper shell 31 and the lower shell 32 is in contact with the surface of the capacitor body 1. Then, the water inlet connector 310 and the water outlet connector 311 are connected to the water inlet pipe and the water outlet pipe. The heat-conducting element 33 can conduct heat to the capacitor body 1. After the liquid enters the cavity in the upper shell 31 and the lower shell 32, it can dissipate heat from the heat-conducting element 33, thereby achieving an overall heat dissipation effect.
[0027] Specifically, the heat-conducting component 33 includes multiple connecting plates 332 fixed inside the upper shell 31 and the lower shell 32. The surfaces of the multiple connecting plates 332 are fixedly connected to the bonding plates 331, and the surfaces of the connecting plates 332 are fixedly connected to the extension plates 333. The extension plates 333 extend into the cavities of the upper shell 31 and the lower shell 32 respectively. The bonding plates 331, the connecting plates 332 and the extension plates 333 are all made of copper. The extension plates 333 fixed on the connecting plates 332 extend into the cavities and can come into contact with the liquid to improve the heat dissipation effect.
[0028] Specifically, the mounting assembly 34 includes a plurality of threaded posts 341 fixed on the surface of the lower shell 32. The threaded posts 341 penetrate the upper shell 31. Nuts 342 are threadedly connected to the surface of the threaded posts 341. A rotating ring 343 is rotatably connected to the inner wall of the nut 342. A connecting band 344 is fixedly connected to the surface of the rotating ring 343. The other end of the connecting band 344 is fixedly connected to the surface of the lower shell 32.
[0029] In this embodiment: the nut 342 is threadedly connected to the threaded post 341, thereby locking the upper shell 31 and the lower shell 32. The connecting band 344, in conjunction with the rotating ring 343, can restrict the nut 342.
[0030] Specifically, multiple positioning rings 38 are fixedly connected to the upper and lower surfaces of the capacitor body 1, and positioning holes 39 for the positioning rings 38 to be inserted are opened on the surface of the bonding plate 331.
[0031] In this embodiment: after the bonding plate 331 is bonded to the capacitor body 1, the positioning ring 38 can be inserted into the positioning hole 39 to reduce the phenomenon of overall slippage.
[0032] Specifically, both the upper shell 31 and the lower shell 32 have grooves 36 on their surfaces for the auxiliary tube 35 to be inserted into, and the inner wall of the grooves 36 is fixedly connected to two protrusions 37 that restrict the auxiliary tube 35.
[0033] In this embodiment: the groove 36 allows the auxiliary tube 35 to be inserted, and then the two protrusions 37 can restrict the auxiliary tube 35, reducing the likelihood of the auxiliary tube 35 moving out of the groove 36.
[0034] Working principle: During use, the upper shell 31 and lower shell 32 are attached together. Then, the heat-conducting components 33 in the upper shell 31 and lower shell 32 are attached to the capacitor body 1 respectively. The positioning ring 38 on the surface of the capacitor body 1 is inserted into the positioning hole 39 on the surface of the bonding plate 331. At the same time, the threaded post 341 passes through the upper shell 31. Then, the nut 342 is threaded to the threaded post 341, thereby locking the upper shell 31 and lower shell 32. Then, the water inlet connector 310 and the water outlet connector 311 are connected to the water inlet pipe and the water outlet pipe respectively. The heat-conducting component 33 can heat the capacitor. Body 1 conducts heat, and the heat is transferred sequentially to connecting plate 332 and extension plate 333 through bonding plate 331. After the liquid enters the inner cavity of upper shell 31, it is transported to the cavity of lower shell 32 through auxiliary tube 35 and connector 312, and then discharged through water outlet connector 311. The liquid contacts extension plate 333, which can dissipate heat to heat conduction component 33 and achieve overall heat dissipation effect. Groove 36 allows auxiliary tube 35 to be inserted, and then two protrusions 37 can restrict auxiliary tube 35 and reduce the auxiliary tube 35 from moving out of groove 36.
Claims
1. A capacitor heat dissipation structure comprising a heat dissipation device (3), characterized in that: The heat dissipation device (3) is disposed on the surface of the capacitor body (1), and a terminal body (2) is mounted on the capacitor body (1); the heat dissipation device (3) includes an upper shell (31) and a lower shell (32), the upper shell (31) and the lower shell (32) are respectively located on the upper and lower sides of the capacitor body (1), the inner walls of the upper shell (31) and the lower shell (32) are provided with cavities, the inner sides of the upper shell (31) and the lower shell (32) are fixedly connected with heat-conducting components (33), and an installation assembly (34) is provided between the upper shell (31) and the lower shell (32). Used to connect the upper shell (31) and the lower shell (32) so that the heat-conducting element (33) is in contact with the surface of the capacitor body (1). The surfaces of the upper shell (31) and the lower shell (32) are respectively fixedly connected to a water inlet connector (310) and a water outlet connector (311). An auxiliary tube (35) is fixedly connected to the surface of the upper shell (31). A threaded sleeve (313) is rotatably connected to one end of the auxiliary tube (35). A connector (312) is fixedly connected to the surface of the lower shell (32). The threaded sleeve (313) is threadedly connected to the connector (312).
2. The capacitor heat dissipation structure of claim 1, wherein: The heat-conducting component (33) includes multiple connecting plates (332) fixed inside the upper shell (31) and the lower shell (32), and the surfaces of the multiple connecting plates (332) are fixedly connected with adhesive plates (331).
3. The capacitor heat dissipation structure of claim 2, wherein: An extension plate (333) is fixedly connected to the surface of the connecting plate (332), and the extension plate (333) extends into the cavities of the upper shell (31) and the lower shell (32) respectively.
4. The capacitor heat dissipation structure of claim 1, wherein: The mounting assembly (34) includes a plurality of threaded posts (341) fixed to the surface of the lower housing (32), the threaded posts (341) penetrating the upper housing (31), and the surfaces of the threaded posts (341) are threaded with nuts (342).
5. The capacitor heat sink structure of claim 4, wherein: The inner wall of the nut (342) is rotatably connected to a rotating ring (343), and a connecting band (344) is fixedly connected to the surface of the rotating ring (343). The other end of the connecting band (344) is fixedly connected to the surface of the lower shell (32).
6. The capacitor heat sink structure of claim 2, wherein: Multiple positioning rings (38) are fixedly connected to the upper and lower surfaces of the capacitor body (1), and the surface of the bonding plate (331) is provided with positioning holes (39) for the positioning rings (38) to be inserted.
7. The capacitor heat sink structure of claim 3, wherein: The bonding plate (331), connecting plate (332) and extension plate (333) are all made of copper.
8. The capacitor heat sink structure of claim 1, wherein: The surfaces of the upper shell (31) and the lower shell (32) are provided with grooves (36) for the auxiliary tube (35) to be inserted. The inner wall of the groove (36) is fixedly connected with two protrusions (37) that restrict the auxiliary tube (35).