Cover plate of aluminum electrolytic capacitor

Abstract

The utility model discloses an aluminum electrolytic capacitor cover plate, comprising a main body unit which comprises a housing, a cover plate and a heat radiation rack, the housing is fixedly connected with a lock ring, the diameter of the cover plate is larger than the inner diameter of the lock ring, the cover plate is arranged in the housing, and the heat radiation rack is arranged on the top of the cover plate; and the heat dissipation unit comprises a heat-conducting fin, the heat-conducting fin extends into the core package in the shell, the top of the heat-conducting fin penetrates through the cover plate, and the top of the cover plate is fixedly connected with a heat-conducting plate. Through the unique design of the heat dissipation unit, the heat dissipation efficiency of the aluminum electrolytic capacitor is greatly improved, the efficient heat conduction and heat dissipation structure can timely dissipate heat generated by the internal core cladding, the influence of high temperature on the performance of the capacitor is effectively reduced, the service life of the capacitor is prolonged, and the service life of the capacitor is prolonged. And the possibility of potential safety hazards caused by overheating is reduced.

Description

Technical Field

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

[0002] In the field of electronic components, aluminum electrolytic capacitors are commonly used energy storage elements and are widely used in various electronic devices. Traditional aluminum electrolytic capacitor covers are often relatively simple in structure, mainly serving to seal the capacitor casing and provide basic protection for the internal components. Their heat dissipation mostly relies on the natural heat dissipation of the material itself and simple heat exchange with the external environment, resulting in relatively low heat dissipation efficiency.

[0003] Traditional cover plates have poor heat dissipation. When capacitors operate for extended periods and internal heat accumulates, the high temperatures can negatively impact capacitor performance, shorten their lifespan, and even pose safety hazards. Furthermore, the stability and sealing after installation are difficult to guarantee, making leakage prone to occur. Especially when the capacitor is at high temperatures, the internal electrolyte is consumed more rapidly, further reducing the capacitor's lifespan and performance. 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 current aluminum electrolytic capacitor cover, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide an aluminum electrolytic capacitor cover plate, which is suitable for solving the problem that traditional cover plates have poor heat dissipation. When the capacitor is working for a long time and internal heat accumulates, the high temperature can easily affect the performance of the capacitor, shorten its service life, and may even cause safety hazards. The stability and sealing after installation are also difficult to guarantee, and leakage is prone to occur.

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

[0008] The main unit includes an outer shell, a cover plate, and a heat sink. A locking ring is fixedly connected to the outer shell. The diameter of the cover plate is larger than the inner diameter of the locking ring. The cover plate is located inside the outer shell, and the heat sink is located on top of the cover plate.

[0009] A heat dissipation unit includes a heat-conducting plate extending into a core package inside a housing. The top of the heat-conducting plate passes through a cover plate, and a heat-conducting plate is fixedly connected to the top of the cover plate. The heat-conducting plate is fixedly connected to the heat-conducting plate. A heat dissipation plate is embedded inside the heat dissipation frame, and a plurality of heat dissipation fins are fixedly connected to the top of the heat dissipation plate. The ends of the heat dissipation plate and the heat-conducting plate that are close to each other are in contact. Thermal grease is filled between the heat dissipation plate and the heat-conducting plate.

[0010] In a preferred embodiment of the aluminum electrolytic capacitor cover of this utility model, a connecting frame is fixedly connected to the top of the outer shell, a mounting plate is fixedly provided on the top of the connecting frame, a limiting rod slides through the mounting plate, a limiting plate is provided on the top of the limiting rod, a first spring is sleeved on the outer surface of the limiting rod, the first spring is located between the limiting plate and the mounting plate, one end of the first spring is fixedly connected to the limiting plate, and the other end of the first spring is fixedly connected to the mounting plate. The first spring is used to provide a preload force for the limiting plate to move closer to the mounting plate.

[0011] In a preferred embodiment of the aluminum electrolytic capacitor cover plate of this utility model, four connecting frames are provided, a card plate is fixedly connected to the heat dissipation frame, four card plates are provided, the four card plates are arranged in a circular array around the heat dissipation frame, the card plates are provided with card holes, and the card plates are provided with an inclined surface in the clockwise direction.

[0012] In a preferred embodiment of the aluminum electrolytic capacitor cover of this utility model, the top of the outer shell is provided with a through hole, a bracket is fixedly connected inside the through hole, a slide rod is slidably connected to the bracket, a sealing cover is fixedly connected to the top of the slide rod, and a limiting plate is fixedly connected to the top of the slide rod.

[0013] In a preferred embodiment of the aluminum electrolytic capacitor cover plate of this utility model, a second spring is sleeved on the outer surface of the slide rod. The second spring is located between the limiting plate and the bracket, and the second spring is used to provide a preload force for the limiting plate to move away from the bracket.

[0014] In a preferred embodiment of the aluminum electrolytic capacitor cover plate of this utility model, a groove is provided on the side of the cover plate, and a sealing ring is installed inside the groove.

[0015] The beneficial effects of this utility model are as follows: Through the unique heat dissipation unit design, the heat dissipation efficiency of aluminum electrolytic capacitors is greatly improved. The efficient heat conduction and heat dissipation structure can dissipate the heat generated by the internal core in a timely manner, effectively reducing the impact of high temperature on capacitor performance, extending the service life of capacitors, and reducing the possibility of safety hazards caused by overheating.

[0016] The sealing cover fits tightly under the action of the second spring, and together with the sealing ring on the side of the cover plate, it effectively prevents electrolyte leakage, especially in high-temperature environments, reducing electrolyte consumption. When the internal high voltage is high, the sealing cover can be opened to release pressure, and when the internal electrolyte is low, the sealing cover can be manually pulled open to replenish the electrolyte inside the capacitor, further ensuring the performance and life of the capacitor and improving the overall reliability and stability of the capacitor. Attached Figure Description

[0017] 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:

[0018] Figure 1 This is a schematic diagram of the overall structure of an aluminum electrolytic capacitor cover plate proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the main unit structure of an aluminum electrolytic capacitor cover plate proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the heat dissipation unit structure of an aluminum electrolytic capacitor cover plate proposed in this utility model.

[0021] Figure 4 This is a cross-sectional view of the cover plate structure of an aluminum electrolytic capacitor cover plate proposed in this utility model.

[0022] Figure Descriptions: 100, Main Unit; 101, Outer Shell; 102, Cover Plate; 103, Heat Sink Rack; 104, Locking Ring; 200, Heat Dissipation Unit; 201, Heat Conducting Sheet; 202, Heat Conducting Plate; 203, Heat Dissipation Plate; 204, Heat Dissipation Fins; 205, Thermal Grease; 206, Connecting Frame; 207, Mounting Plate; 208, Limiting Rod; 209, Limiting Plate; 210, First Spring; 211, Clamping Plate; 212, Clamping Hole; 213, Inclined Surface; 105, Through Hole; 106, Bracket; 107, Sliding Rod; 108, Sealing Cover; 109, Limiting Plate; 110, Second Spring; 111, Groove; 112, Sealing Ring. 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 or selective embodiment that excludes 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 an embodiment of the present invention, an aluminum electrolytic capacitor cover plate is provided, comprising: a main body unit 100 and a heat dissipation unit 200.

[0029] The main unit 100 includes a shell 101, a cover plate 102, and a heat sink 103. A locking ring 104 is fixedly connected to the shell 101. The diameter of the cover plate 102 is larger than the inner diameter of the locking ring 104. The cover plate 102 is disposed inside the shell 101, and the heat sink 103 is disposed on the top of the cover plate 102.

[0030] The heat dissipation unit 200 includes a heat-conducting sheet 201 extending into the core of the outer casing 101. The top of the heat-conducting sheet 201 passes through a cover plate 102. A heat-conducting plate 202 is fixedly connected to the top of the cover plate 102. The heat-conducting plate 202 is fixedly connected to the heat-conducting sheet 201. A heat dissipation plate 203 is embedded inside the heat dissipation frame 103. A plurality of heat dissipation fins 204 are fixedly connected to the top of the heat dissipation plate 203. The ends of the heat dissipation plate 203 and the heat-conducting plate 202 are in contact with each other. Thermal grease 205 is filled between the heat dissipation plate 203 and the heat-conducting plate 202.

[0031] A connecting frame 206 is fixedly connected to the top of the outer casing 101. A mounting plate 207 is fixedly installed on the top of the connecting frame 206. A limiting rod 208 slides through the mounting plate 207. A limiting plate 209 is provided on the top of the limiting rod 208. A first spring 210 is sleeved on the outer surface of the limiting rod 208. The first spring 210 is located between the limiting plate 209 and the mounting plate 207. One end of the first spring 210 is fixedly connected to the limiting plate 209, and the other end of the first spring 210 is fixedly connected to the mounting plate 207. The first spring 210 is used to provide a preload force for the limiting plate 209 to move closer to the mounting plate 207.

[0032] Four connecting frames 206 are provided. A card plate 211 is fixedly connected to the heat dissipation frame 103. Four card plates 211 are provided and arranged in a circular array around the heat dissipation frame 103. Card holes 212 are provided on the card plates 211 and inclined surfaces 213 are provided in the clockwise direction of the card plates 211.

[0033] The top of the outer casing 101 has a through hole 105. A bracket 106 is fixedly connected inside the through hole 105. A slide rod 107 is slidably connected to the bracket 106. A sealing cover 108 is fixedly connected to the top of the slide rod 107. A limiting plate 109 is fixedly connected to the top of the slide rod 107. A second spring 110 is sleeved on the outer surface of the slide rod 107. The second spring 110 is located between the limiting plate 109 and the bracket 106. The second spring 110 is used to provide a pre-tightening force to keep the limiting plate 109 away from the bracket 106. When the internal high voltage is high, the sealing cover 108 can be opened to release pressure. When the internal electrolyte is reduced, the sealing cover 108 can be manually opened to replenish the electrolyte inside the capacitor, further ensuring the performance and life of the capacitor and improving the reliability and stability of the entire capacitor.

[0034] The cover plate 102 has a groove 111 on its side, and a sealing ring 112 is installed inside the groove 111. The sealing structure can still maintain good sealing performance, ensure the normal operation of the capacitor, and reduce the performance degradation and lifespan shortening caused by electrolyte leakage.

[0035] During installation, assemble the outer casing 101 with the internal components such as the core package, ensuring a good connection between the heat-conducting plate 201 and the heat-conducting plate 201 in the core package. Place the cover plate 102 inside the outer casing 101, allowing the heat-conducting plate 201 to pass through the cover plate 102 and be fixedly connected to the heat-conducting plate 202 on top of the cover plate 102. Install the heat sink bracket 103 on top of the cover plate 102, and fit the heat sink 203 into the heat sink bracket 103, ensuring close contact between the heat sink 203 and the heat-conducting plate 202. Fill the space between them with thermal grease 205, and then fix the heat sink fins 204 to the top of the heat sink 203. Then rotate the heat sink bracket 103 clockwise. The limiting rod 208 first contacts the inclined surface 213, and then the inclined surface 213 presses the limiting rod 208 upward until the limiting rod 208 enters the locking hole 212 under the action of the first spring 210, completing the fixation of the heat sink bracket 103 and achieving positioning and fixation.

[0036] Workflow

[0037] When the aluminum electrolytic capacitor is working, the core generates heat, which is conducted to the heat sink 203 through the heat conduction plate 201. Since there is thermal grease 205 between the heat sink 203 and the heat conduction plate 202, the heat conduction efficiency is improved. Finally, the heat is dissipated to the external environment through the heat sink fins 204, achieving efficient heat dissipation.

[0038] During capacitor operation, the sealing cap 108 is tightly fitted at the corresponding position under the preload of the second spring 110, working together with the sealing ring 112 on the side of the cover plate 102 to prevent electrolyte leakage. Even under high-temperature environments and changes in internal pressure, the sealing structure can still maintain good sealing performance, ensuring normal operation of the capacitor and reducing performance degradation and shortened lifespan caused by electrolyte leakage.

[0039] When the capacitor is under high pressure, the sealing cover 108 can be opened to release the pressure. When the electrolyte inside the capacitor decreases, the sealing cover 108 can be manually opened to replenish the electrolyte inside the capacitor, which further ensures the performance and life of the capacitor and improves the reliability and stability of the entire capacitor.

[0040] 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 aluminum electrolytic capacitor cover plate (102) characterized by, The utility model relates to a heat dissipation device for battery pack, including: The main unit (100) includes the shell (101), the cover plate (102) and the heat dissipation frame (103), the shell (101) is fixedly connected with the lock ring (104), the diameter of cover plate (102) is greater than the inside diameter of lock ring (104), and the cover plate (102) is arranged in the inside of shell (101), and the heat dissipation frame (103) is arranged on the top of cover plate (102); The heat dissipation unit (200) includes the heat conduction sheet (201), and the heat conduction sheet (201) extends to the inside core package of shell (101), and the top of heat conduction sheet (201) passes through cover plate (102), and the top of cover plate (102) is fixedly connected with the heat conduction plate (202), and the heat conduction plate (202) is fixedly connected with heat conduction sheet (201), and the inside of heat dissipation frame (103) is embedded with the heat dissipation plate (203), and the top of heat dissipation plate (203) is fixedly connected with a plurality of heat dissipation fins (204), and the end of heat dissipation plate (203) and heat conduction plate (202) is close to each other and is connected, and heat dissipation silicone grease (205) is filled between heat dissipation plate (203) and heat conduction plate (202).

2. An aluminum electrolytic capacitor cover plate (102) according to claim 1, characterized in that: The top of shell (101) is fixedly connected with the connecting frame (206), the top of connecting frame (206) is fixedly provided with the mounting plate (207), the limiting rod (208) is slidably penetrated in mounting plate (207), the top of limiting rod (208) is provided with the limiting plate (209), the first spring (210) is sleeved on the outer surface of limiting rod (208), the first spring (210) is located between limiting plate (209) and mounting plate (207), one end of first spring (210) is fixedly connected with limiting plate (209), and the other end of first spring (210) is fixedly connected with mounting plate (207), and first spring (210) is used to provide the pre-tightening force that limiting plate (209) is close to mounting plate (207).

3. An aluminum electrolytic capacitor cover plate (102) according to claim 2, characterized in that: The connecting frame (206) is provided with four, the clamping plate (211) is fixedly connected on the heat dissipation frame (103), the clamping plate (211) is provided with four, four clamping plate (211) is distributed in the circumferential array around heat dissipation frame (103), the clamping hole (212) is arranged on clamping plate (211), and the inclined surface (213) is arranged in the clockwise direction of clamping plate (211).

4. An aluminum electrolytic capacitor cover plate (102) according to claim 3, characterized in that: The top of shell (101) is provided with through hole (105), the inside of through hole (105) is fixedly connected with support (106), the slide rod (107) is slidably connected on support (106), the sealing cover (108) is fixedly connected on the top of slide rod (107), and the limiting plate (109) is fixedly connected on the top of slide rod (107).

5. An aluminum electrolytic capacitor cover plate (102) according to claim 4, characterized in that: The outer surface of slide rod (107) is sleeved with the second spring (110), and the second spring (110) is located between limiting plate (109) and support (106), and the second spring (110) is used to provide the pre-tightening force that limiting plate (109) is away from support (106).

6. An aluminum electrolytic capacitor cover plate (102) according to claim 5, characterized in that: The side surface of the cover plate (102) is provided with a groove (111), and a sealing ring (112) is arranged in the groove (111).

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