A novel type of uniformly heated aluminum electrolytic capacitor

Abstract

This utility model relates to the field of aluminum electrolytic capacitor technology and discloses a novel heat-equalizing aluminum electrolytic capacitor. The capacitor adopts a soft rubber heat-equalizing structure combined with a hard shell for radiating heat conduction. The heat-equalizing conduction of the heat-equalizing adhesive layer and the rapid dissipation of the heat dissipation sleeve can achieve efficient heat dissipation of the capacitor. The heat dissipation sleeve is formed by one-piece stamping of an open ring. The flat mounting part improves the heat conduction efficiency, and the raised heat dissipation part improves the heat dissipation efficiency. This can effectively improve the heat conduction and dissipation efficiency. Furthermore, due to the wrinkle-like stretchable characteristics of the heat dissipation sleeve and the highly elastic heat-equalizing adhesive layer, a non-enclosed shell structure can be formed on the outside of the capacitor. In the event of capacitor expansion and bursting, the expandable characteristics of the heat-equalizing adhesive layer and the heat dissipation sleeve can prevent violent explosion caused by high internal pressure of the capacitor. Combined with the pressure relief groove on the top, it can effectively improve the working safety of the capacitor.

Description

Technical Field

[0001] This utility model relates to the field of aluminum electrolytic capacitor technology, specifically to a novel aluminum electrolytic capacitor with uniform heating. Background Technology

[0002] Aluminum electrolytic capacitors are electronic components that use aluminum foil as electrodes and electrolyte as cathodes. They form an oxide film through an electrochemical reaction, which serves as the dielectric. They are characterized by large capacity and high cost-effectiveness. As an important electronic component, they are widely used in various electronic devices for circuit functions such as filtering, energy storage, and coupling.

[0003] During the operation of aluminum electrolytic capacitors, heat is generated. Excessive temperature will affect the normal operation and service life of the capacitor. In order to improve the heat dissipation efficiency of the capacitor, traditional capacitors often use heat-spreading and heat-dissipating shell structures for heat dissipation assistance. Although this can accelerate heat dissipation, the heat-spreading and heat-dissipating shell structures are mostly sealed sleeve structures, forming a thick shell structure on the outside of the capacitor. This not only increases the structural volume of the capacitor, but also greatly increases the damage and hazards to the outside world if the capacitor melts and explodes. Therefore, a new type of heat-spreading aluminum electrolytic capacitor is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a novel uniformly heated aluminum electrolytic capacitor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel uniformly heated aluminum electrolytic capacitor, comprising a capacitor mechanism and a heat dissipation mechanism. The capacitor mechanism includes a capacitor core, mounting posts, and a protective shell. The protective shell is enclosed and installed outside the capacitor core. The mounting posts are connected and installed to the electrode portion of the capacitor core. A pressure relief groove is provided on the upper part of the protective shell.

[0006] The heat dissipation mechanism is installed on the outside of the protective shell. The heat dissipation mechanism includes a heat-spreading adhesive layer and a heat dissipation sleeve. The heat dissipation sleeve is bonded to the outside of the protective shell by the heat-spreading adhesive layer. The periphery of the heat dissipation sleeve is integrally stamped and formed with a flat mounting part and a raised heat dissipation part.

[0007] Preferably, the capacitor core includes an anode foil, electrolytic paper, and a cathode foil, wherein the anode foil and the cathode foil are wound and installed separately by the electrolytic paper.

[0008] Preferably, the protective cover is a closed cylindrical base, and the interior of the protective cover is filled with electrolyte.

[0009] Preferably, the mounting posts are arranged in pairs, with the upper parts of the two sets of mounting posts respectively contacting and mounting the anode foil and the cathode foil, and the lower end of the mounting posts being fixedly and through-mounted to the base of the protective housing.

[0010] Preferably, the pressure relief groove is cross-shaped and is not through-hole formed in the middle of the top side of the protective shell.

[0011] Preferably, the heat-spreading adhesive layer is elastically configured, and the heat-spreading adhesive layer is fixedly coated and installed on the outer wall side of the protective shell in a vertical, spaced-out manner.

[0012] Preferably, the heat dissipation sleeve is an open cylindrical sleeve. The heat dissipation sleeve is bonded and fixed to the outside of the protective shell by a heat-spreading adhesive layer. The flat mounting part and the raised heat dissipation part are alternately distributed on the outer periphery of the heat dissipation sleeve. After installation, the flat mounting part is attached to the heat-spreading adhesive layer.

[0013] Preferably, the upper part of the heat dissipation sleeve is provided with a top folded edge by bending. The top folded edge is evenly distributed in a circumferential shape on the upper inner side of the heat dissipation sleeve. After installation, the top folded edge is fitted and installed close to the upper part of the protective shell.

[0014] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0015] This aluminum electrolytic capacitor employs a soft-plastic heat-spreading and hard-shell radiating heat dissipation structure. A heat-dissipating sleeve is integrally installed on the outside of the capacitor's protective casing via a heat-spreading adhesive layer. The heat-spreading adhesive layer's adhesion and heat conduction, combined with the rapid heat dissipation of the heat-dissipating sleeve, achieve efficient heat dissipation from the capacitor's operating temperature, improving operational stability. The heat-dissipating sleeve is integrally stamped using an open ring design. Alternating flat mounting sections and raised heat-dissipating sections are stamped on the upper part of the sleeve. The flat mounting sections enhance heat conduction efficiency, while the raised heat-dissipating sections enhance heat dissipation efficiency, effectively improving heat conduction and dissipation efficiency. Furthermore, due to the stretchable, wrinkled nature of the heat-dissipating sleeve, combined with the highly elastic heat-spreading adhesive layer, a non-enclosed shell structure can be formed on the outside of the capacitor. In the event of capacitor expansion and bursting, the expandable nature of the heat-spreading adhesive layer and the heat-dissipating sleeve prevents violent explosions caused by high internal pressure. Combined with the pressure relief groove on the top, this effectively improves the capacitor's operational safety. Attached Figure Description

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

[0017] Figure 1 This is a schematic diagram of the overall installation upper structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall installation lower structure of this utility model;

[0019] Figure 3 This is a simplified schematic diagram of the internal structure of the capacitor of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the upper side of the heat dissipation sleeve of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the lower side of the heat dissipation sleeve of this utility model.

[0022] Explanation of reference numerals in the attached diagram: 1. Capacitor core; 2. Mounting terminal; 3. Protective casing; 4. Pressure relief groove; 5. Heat dissipation adhesive layer; 6. Heat dissipation sleeve; 7. Flat mounting part; 8. Protruding heat dissipation part; 9. Top folded edge. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce. Example

[0025] Please see Figure 1-5 This utility model provides a technical solution: a novel uniformly heated aluminum electrolytic capacitor, including a capacitor mechanism and a heat dissipation mechanism. The capacitor mechanism includes a capacitor core 1, mounting posts 2, and a protective shell 3. Specifically, the capacitor core 1 includes an anode foil, electrolytic paper, and a cathode foil. The anode foil and cathode foil are wound and installed separately by the electrolytic paper. The specific materials and connection methods are not detailed here as they are existing technologies. The protective shell 3 is used for encapsulation and protection of the capacitor core 1, as shown in the attached figure. Figure 1As shown, the protective housing 3 can be a closed cylindrical aluminum housing. The protective housing 3 is installed outside the capacitor core 1. To provide the electrolyte, the interior of the protective housing 3 is filled with electrolyte. The mounting posts 2 are connected and installed to the electrode portions of the capacitor core 1. Specifically, see attached... Figure 2 As shown, the mounting posts 2 are installed in pairs. The upper parts of the two sets of mounting posts 2 are respectively installed in contact with the anode foil and the cathode foil. The lower end of the mounting posts 2 is fixedly installed through the base of the protective housing 3. In order to achieve pressure relief protection, a pressure relief groove 4 is provided on the upper part of the protective housing 3. Specifically, the pressure relief groove 4 is cross-shaped and is not through the center of the top side of the protective housing 3.

[0026] The heat dissipation mechanism is installed on the outside of the protective housing 3 for conductive heat dissipation and shielding protection of the capacitor. The heat dissipation mechanism includes a heat-spreading adhesive layer 5 and a heat dissipation sleeve 6. The heat-spreading adhesive layer 5 is elastically set. Specifically, the heat-spreading adhesive layer 5 can be thermally conductive silicone or modified epoxy resin. The heat-spreading adhesive layer 5 is fixedly coated and installed on the outer wall side of the protective housing 3 in a vertical, spaced manner. The spaced coating ensures stable adhesion of the heat dissipation sleeve 6 while preventing the heat-spreading adhesive layer 5 from blocking the inner gap of the protruding heat dissipation part 8. Figure 5 As shown, the heat dissipation sleeve 6 is an open cylindrical sleeve. The heat dissipation sleeve 6 is bonded and fixed to the outside of the protective shell 3 by the heat-spreading adhesive layer 5. It adopts a soft adhesive heat-spreading combined with a hard shell radiating heat dissipation structure. The heat dissipation sleeve 6 is integrally installed on the outside of the capacitor protective shell 3 by the heat-spreading adhesive layer 5. The heat dissipation and heat conduction of the heat-spreading adhesive layer 5 combined with the rapid dissipation of the heat dissipation sleeve 6 can achieve efficient dissipation of the working heat of the capacitor, which is conducive to improving the working stability of the capacitor.

[0027] The heat dissipation sleeve 6 can be made of aluminum or copper, which have good thermal conductivity and ductility. To improve the heat dissipation characteristics and expansion ductility of the heat dissipation sleeve 6, a flat mounting part 7 and a raised heat dissipation part 8 are integrally stamped on the periphery of the heat dissipation sleeve 6, as shown in the attached figure. Figure 5 As shown, the flat mounting part 7 and the raised heat dissipation part 8 are alternately distributed on the outer periphery of the heat dissipation sleeve 6. After installation, the flat mounting part 7 is attached to the heat-spreading adhesive layer 5. The heat dissipation sleeve 6 is formed by one-piece stamping of an open ring. The flat mounting part 7 and the raised heat dissipation part 8 are alternately arranged on the upper part of the heat dissipation sleeve 6 by stamping. The flat mounting part 7 improves the heat conduction efficiency, and the raised heat dissipation part 8 improves the heat dissipation efficiency, which can effectively improve the heat conduction and dissipation efficiency. In addition, due to the wrinkle stretchable characteristics of the heat dissipation sleeve 6 and the highly elastic heat-spreading adhesive layer 5, a non-enclosed shell structure can be formed on the outside of the capacitor. When the capacitor expands and bursts, the expandable characteristics of the heat-spreading adhesive layer 5 and the heat dissipation sleeve 6 can prevent violent explosion caused by high internal pressure of the capacitor. In conjunction with the pressure relief groove 4 at the top, the working safety of the capacitor can be effectively improved. In order to achieve the top support limit, as shown in the attached figure Figure 4 As shown, a top folded edge 9 is provided on the upper part of the heat dissipation sleeve 6 by bending. The top folded edge 9 is evenly distributed in a circular shape on the upper inner side of the heat dissipation sleeve 6. After installation, the top folded edge 9 is fitted and installed close to the upper part of the protective shell 3.

[0028] Working principle or structural principle: During processing, after the integrated encapsulation of the capacitor core 1 and the outer protective shell 3 is completed, a heat-spreading adhesive layer 5 is applied to the outside of the protective shell 3. Then, the heat dissipation sleeve 6 is installed on the outside of the protective shell 3 by fitting and pressing, thus completing the capacitor processing work.

[0029] During operation, the capacitor operates based on the electrolytic reaction within its core 1. The heat generated during operation is conducted through the core 1 to the protective casing 3, and then diffused through the heat-spreading adhesive layer 5 to the external heat dissipation sleeve 6. Finally, the heat is dissipated through efficient heat exchange between the heat dissipation sleeve 6 and the external air. When the internal pressure of the capacitor increases, under normal circumstances, when the pressure relief groove 4 is functioning properly, the internal pressure is safely released by breaking through the protective casing 3 of the heater through the pressure relief groove 4. When the pressure relief groove 4 fails to release pressure, the increased internal pressure causes the middle of the protective casing 3 to expand. The elastic heat-spreading adhesive layer 5 on the inside naturally expands, and the expansion force of the internal pressure on the outside stretches the pleats of the heat dissipation sleeve 6, thereby achieving the overall expansion of the heat dissipation sleeve 6. This can prevent explosions caused by high internal pressure due to the sealed casing and effectively improve the working safety of the capacitor.

[0030] In summary, this aluminum electrolytic capacitor adopts a soft rubber heat-spreading and hard shell radiating heat dissipation structure. A heat dissipation sleeve 6 is integrally installed on the outside of the capacitor's protective shell 3 via a heat-spreading adhesive layer 5. The heat dissipation of the capacitor's operating heat is achieved through the heat conduction of the adhesive layer 5 and the rapid heat dissipation of the sleeve 6, which is beneficial to improving the capacitor's operational stability. The heat dissipation sleeve 6 is integrally stamped using an open ring design. A flat mounting part 7 and a raised heat dissipation part 8 are alternately stamped on the upper part of the heat dissipation sleeve 6. The flat mounting part 7 improves heat conduction efficiency, and the raised heat dissipation part 8 improves heat dissipation efficiency, effectively improving the heat conduction and dissipation efficiency. Furthermore, due to the wrinkled and stretchable characteristics of the heat dissipation sleeve 6, combined with the highly elastic heat-spreading adhesive layer 5, a non-enclosed shell structure can be formed on the outside of the capacitor. In the event of capacitor expansion and bursting, the expandable characteristics of the heat-spreading adhesive layer 5 and the heat dissipation sleeve 6 can prevent violent explosions caused by high internal pressure. Combined with the pressure relief groove 4 on the top, this effectively improves the capacitor's operational safety.

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

Claims

1. A novel self-heating aluminum electrolytic capacitor comprising a capacitor mechanism and a heat dissipation mechanism, characterized in that, The capacitor mechanism includes a capacitor core (1), mounting posts (2) and a protective shell (3). The protective shell (3) is enclosed and installed on the outside of the capacitor core (1). The mounting posts (2) are connected to the electrode portion of the capacitor core (1). A pressure relief groove (4) is provided on the upper part of the protective shell (3). The heat dissipation mechanism is installed on the outside of the protective shell (3). The heat dissipation mechanism includes a heat-spreading adhesive layer (5) and a heat dissipation sleeve (6). The heat dissipation sleeve (6) is bonded to the outside of the protective shell (3) by the heat-spreading adhesive layer (5). The periphery of the heat dissipation sleeve (6) is provided with a flat mounting part (7) and a raised heat dissipation part (8) by integral stamping.

2. The novel uniformly heated aluminum electrolytic capacitor according to claim 1, characterized in that, The capacitor core (1) includes an anode foil, electrolytic paper, and a cathode foil, which are wound and installed separately by the electrolytic paper.

3. A novel heat soaked aluminum electrolytic capacitor as claimed in claim 2, wherein, The protective shell (3) is a closed cylindrical base, and the interior of the protective shell (3) is filled with electrolyte.

4. The novel uniformly heated aluminum electrolytic capacitor according to claim 3, characterized in that, The mounting posts (2) are arranged in pairs. The upper parts of the two sets of mounting posts (2) are respectively installed in contact with the anode foil and the cathode foil, and the lower end of the mounting posts (2) is fixedly installed through the base of the protective shell (3).

5. A novel heat soaked aluminum electrolytic capacitor as claimed in claim 4, wherein, The pressure relief groove (4) is cross-shaped and is not through-hole opened in the middle of the top side of the protective shell (3).

6. A novel heat soaked aluminum electrolytic capacitor as claimed in claim 1, wherein, The heat-spreading adhesive layer (5) is elastically configured and is fixedly coated and installed on the outer wall side of the protective shell (3) in a vertical, spaced manner.

7. A novel heat soaked aluminum electrolytic capacitor as claimed in claim 6, wherein, The heat dissipation sleeve (6) is an open cylindrical sleeve. The heat dissipation sleeve (6) is bonded and fixed to the outside of the protective shell (3) by the heat-spreading adhesive layer (5). The flat mounting part (7) and the raised heat dissipation part (8) are alternately distributed on the outer periphery of the heat dissipation sleeve (6). After installation, the flat mounting part (7) and the heat-spreading adhesive layer (5) are attached together.

8. A novel heat soaked aluminum electrolytic capacitor as claimed in claim 7, wherein, The upper part of the heat dissipation sleeve (6) is provided with a top fold (9) by bending. The top fold (9) is evenly distributed in a circular shape on the upper inner side of the heat dissipation sleeve (6). After installation, the top fold (9) is fitted and installed in close contact with the upper part of the protective shell (3).

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