Metallized polypropylene film explosion-proof capacitor
By designing a combined structure of protective shell, top plate, and fins, the problem of insufficient explosion protection in explosion-proof capacitors during heat dissipation is solved, achieving all-round protection and efficient heat dissipation, and improving the safety and reliability of capacitor use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGMEN FARADAY TECH CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-06-02
Smart Images

Figure CN224318312U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of capacitor technology, and more specifically, it relates to a metallized polypropylene film explosion-proof capacitor. Background Technology
[0002] Metallized polypropylene film explosion-proof capacitors are widely used components in the field of power electronics. They have unique performance advantages and safety characteristics. During the use of explosion-proof capacitors, they generate a certain amount of heat. However, commonly used explosion-proof capacitors cannot guarantee explosion-proof performance while ensuring heat dissipation, which leads to a lack of corresponding auxiliary mechanisms for their use. Utility Model Content
[0003] This disclosure relates to a metallized polypropylene film explosion-proof capacitor to address the problem mentioned in the background art that during the use of explosion-proof capacitors, explosion-proof capacitors generate a certain amount of heat, but commonly used explosion-proof capacitors cannot guarantee explosion-proof performance while ensuring heat dissipation, thus leading to a lack of corresponding auxiliary mechanisms for the use of explosion-proof capacitors.
[0004] This utility model discloses a metallized polypropylene film explosion-proof capacitor, achieved through the following specific technical means:
[0005] This utility model provides a metallized polypropylene film explosion-proof capacitor, comprising: a capacitor body, wherein two protective shells are installed on the outside of the capacitor body; a protective top plate is installed on the top of the protective shells; the capacitor body further comprises: a connecting base, the connecting base being circular in shape, and two connecting bases being symmetrically fixedly installed on the bottom of the capacitor body; and pins, the pins being fixed to the bottom of the connecting bases.
[0006] As a preferred embodiment of this utility model, the protective shell further includes fins, which are integrally disposed on the outside of the protective shell.
[0007] As a preferred embodiment of this utility model, the protective shell further includes: a mating block, the mating block being L-shaped and two in number, the mating blocks being symmetrically and integrally disposed at both ends of the protective shell.
[0008] As a preferred embodiment of this utility model, the protective shell further includes a connection opening, which is located on one side of the protective shell.
[0009] As a preferred embodiment of this utility model, the protective top plate further includes: a mating bracket, the mating bracket being a long strip-shaped structure, and the number of mating brackets being set to two, the mating brackets being symmetrically and integrally disposed at the bottom middle of both ends of the protective top plate.
[0010] As a preferred embodiment of this utility model, the protective top plate further includes: a mating groove, the mating groove being T-shaped and located on one side of the mating seat; the mating groove and the mating block engaging with each other.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] Through the design of the protective outer shell and the protective top plate, and their synergistic effect, the capacitor body receives comprehensive protection. The protective shell can withstand external physical impacts, such as collisions and compressions, preventing damage to the capacitor body and greatly improving its service life and reliability in various harsh environments. The integrated fins on the outside of the protective shell can transfer some of the heat generated by the capacitor body, effectively increasing the heat dissipation area and improving heat dissipation efficiency, enabling the capacitor body to operate stably at lower temperatures. Through the protective structure of the protective shell, the protective top plate, and the fins working together, the capacitor body is provided with comprehensive and multi-layered protection. This not only enhances the capacitor body's protective capabilities and improves its heat dissipation performance but also ensures its safety in use, enabling the capacitor body to operate stably in various complex working environments and providing a strong guarantee for the reliable operation of the power system. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall axial three-dimensional structure of this utility model.
[0014] Figure 2 This is a schematic diagram of the capacitor body structure of this utility model.
[0015] Figure 3 This is a schematic diagram of the protective shell structure of this utility model.
[0016] Figure 4 This is a schematic diagram of the protective top plate structure of this utility model.
[0017] Figure 5 This is a schematic diagram of the structure when the protective top plate and the protective outer shell of this utility model are engaged and fixed.
[0018] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0019] 1. Capacitor body; 101. Connecting base; 102. Pin; 2. Protective shell; 201. Fin; 202. Mating block; 203. Connecting opening; 3. Protective top plate; 301. Mating bracket; 302. Mating slot. Detailed Implementation
[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.
[0021] Example: As attached Figure 1 To be continued Figure 5 As shown:
[0022] This utility model provides a metallized polypropylene film explosion-proof capacitor, including: a capacitor body 1, with two protective shells 2 installed on the outside of the capacitor body 1; a protective top plate 3 is installed on the top of the protective shell 2; the capacitor body 1 also includes: a connecting base 101, the connecting base 101 is circular in shape, and the number of connecting bases 101 is set to two, and the connecting bases 101 are symmetrically fixedly installed on the bottom of the capacitor body 1; and pins 102, the pins 102 being fixed to the bottom of the connecting bases 101.
[0023] The protective shell 2 also includes: fins 201, which are integrally disposed on the outside of the protective shell 2; a mating block 202, which is L-shaped and has two parts, which are symmetrically disposed at both ends of the protective shell 2; and a connecting opening 203, which is opened on one side of the protective shell 2.
[0024] The protective top plate 3 also includes: a mating bracket 301, which is a long strip-shaped seat structure, and there are two mating brackets 301. The mating brackets 301 are symmetrically and integrally set at the bottom middle of both ends of the protective top plate 3; a mating groove 302, which is a T-shaped groove structure and is opened on one side of the mating bracket 301; the mating groove 302 and the mating block 202 are engaged.
[0025] The specific usage and function of this embodiment: During use, by connecting the pins 102 of the capacitor body 1 to the required device, the capacitor body 1 can be used normally.
[0026] When the capacitor body 1 is in use, two protective shells 2 can be placed outside the capacitor body 1, so that the mating blocks 202 at one end of the two protective shells 2 fit together to form a T shape. Then, the mating slot 302 of the mating bracket 301 is inserted into the mating block 202, so that the mating block 202 and the bracket 301 can fix the protective shell 2. Thus, the capacitor body 1 can be protected by the protective shell 2 and the protective top plate 3. At the same time, the protective shell 2 is integrally provided with fins 201 on the outside, which can transfer some of the heat generated by the capacitor body 1, thereby improving the heat dissipation performance and ensuring its safety during use.
Claims
1. A metallized polypropylene film explosion-proof capacitor, characterized in that, include: The capacitor body (1) has two protective shells (2) installed on its exterior; a protective top plate (3) is installed on the top of the protective shell (2); the capacitor body (1) also includes: a connecting base (101), the connecting base (101) is circular in shape, and there are two connecting bases (101), which are symmetrically fixedly installed on the bottom of the capacitor body (1); and pins (102), which are fixed to the bottom of the connecting bases (101).
2. The metallized polypropylene film explosion-proof capacitor as described in claim 1, characterized in that: The protective shell (2) also includes: fins (201), which are integrally disposed on the outside of the protective shell (2).
3. The metallized polypropylene film explosion-proof capacitor as described in claim 2, characterized in that: The protective shell (2) also includes: a mating block (202), the mating block (202) is L-shaped, and the number of mating blocks (202) is set to two, and the mating blocks (202) are symmetrically and integrally disposed at both ends of the protective shell (2).
4. The metallized polypropylene film explosion-proof capacitor as described in claim 3, characterized in that: The protective shell (2) further includes a connection opening (203), which is located on one side of the protective shell (2).
5. The metallized polypropylene film explosion-proof capacitor as described in claim 4, characterized in that: The protective top plate (3) also includes: a mating bracket (301), which is a long strip-shaped seat structure, and the number of mating brackets (301) is set to two. The mating brackets (301) are symmetrically and integrally set at the bottom middle of both ends of the protective top plate (3).
6. The metallized polypropylene film explosion-proof capacitor as described in claim 5, characterized in that: The protective top plate (3) also includes: a mating groove (302), the mating groove (302) is T-shaped, and the mating groove (302) is opened on one side of the mating seat (301); The mating slot (302) and the mating block (202) engage with each other.