Power capacitor

Abstract

The utility model discloses a power capacitor, which relates to the technical field of capacitors, and comprises a shell and a capacitor core, a fixed cover plate is connected right above the shell, output terminals are symmetrically connected right above the fixed cover plate in a penetrating manner, a sealing mechanism is arranged right below the shell, the sealing mechanism and the interior of the shell are positioned, and the capacitor core is connected with the fixed cover plate in a penetrating manner. The bottom ends of the multiple sets of capacitor cores are lifted and positioned, an isolation mechanism is arranged in the shell, the multiple sets of capacitor cores are separated through the isolation mechanism, heat of the capacitor cores is prevented from being accumulated in the shell, and isolation and cooling are facilitated. When the interior of the capacitor expands due to gas generated by high temperature, the silica gel pads arranged on the two sides can play a role in buffering pressure, providing an expansion space for the capacitor and reducing pressure on the metal shell and the cover plate, meanwhile, the silica gel pads are used for assisting heat dissipation of the capacitor, and heat can be effectively transmitted to a heat dissipation part from a heating part.

Description

Technical Field

[0001] This utility model relates to the technical field of capacitors, and specifically to a power capacitor. Background Technology

[0002] Existing capacitors are usually simply called capacitors, which are "containers of electricity," a type of device that stores electrical charge. Capacitors are one of the most widely used electronic components in electronic devices, and are widely used in circuits for DC blocking and AC passing, coupling, bypassing, filtering, tuning circuits, energy conversion, control, and other aspects.

[0003] Existing capacitors have an insulating medium between their metal casing and core. There is also a cover plate between the insulating baffle and the external environment to seal the inside of the capacitor and prevent it from contacting the external environment. Poor sealing can easily damage the capacitor and reduce its lifespan. In addition, due to the operation inside the capacitor, a lot of heat will accumulate, requiring heat dissipation for multiple capacitors. Summary of the Invention

[0004] The purpose of this invention is to provide a power capacitor to solve the aforementioned defects caused by the prior art.

[0005] A power capacitor includes a casing and capacitor cores. A fixed cover plate is connected to the top of the casing, and output terminals are symmetrically connected through the top of the fixed cover plate. A sealing mechanism is provided at the bottom of the casing. The sealing mechanism is positioned with the interior of the casing to support and position the bottom ends of multiple sets of capacitor cores. An isolation mechanism is provided inside the casing to separate the multiple sets of capacitor cores, thereby preventing heat from accumulating inside the casing and facilitating isolation and cooling.

[0006] Preferably, the sealing mechanism includes a bottom cover plate, fasteners, fastening holes, and side positioning rods. The side positioning rods are symmetrically arranged above the bottom cover plate and are connected through the interior of the outer shell. The outer side of the outer shell is symmetrically provided with fastening holes, and the outer side of the side positioning rods is also provided with fastening holes. A fastener is connected through one side of each fastening hole, and a capacitor core is arranged above the bottom cover plate.

[0007] Preferably, the outer casing is connected to the side positioning rod through a through fastener.

[0008] Preferably, the isolation mechanism includes a partition plate, a capacitor core, an insulating heat shrink tubing, a lead wire, a side slot, and a silicone pad. The partition plate is symmetrically arranged inside the housing. The housing has symmetrically opened side slots inside. The housing has symmetrically arranged silicone pads inside. The capacitor core is arranged inside the housing. The top of the capacitor core is connected to a lead wire. The outside of the lead wire is connected to an insulating heat shrink tubing. The other end of the lead wire is connected to the bottom of the output terminal.

[0009] Preferably, the capacitor core is connected to the interior of the insulating heat shrink tubing via a lead wire provided at the top.

[0010] Preferably, the outer shell is connected to both sides of the partition plate through symmetrically opened slots.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. When the capacitor expands due to the gas generated inside at high temperature, the silicone pads on both sides can buffer the pressure, provide space for the capacitor to expand, reduce the pressure on the metal casing and cover plate, and at the same time, the silicone pads can assist in the heat dissipation of the capacitor, effectively transferring heat from the heat-generating part to the heat-dissipating part, reducing thermal resistance and improving heat dissipation efficiency.

[0013] 2. The partition plate is inserted into the inside of the outer shell, so that the side slots inside the outer shell are connected to the two sides of the partition plate. The symmetrically arranged partition plates isolate the capacitor core and support the outer shell, thereby preventing heat from accumulating inside the outer shell. The side positioning rods are used to position the two sides of the bottom cover plate to prevent the connection between the bottom cover plate and the outer shell from being too simple and creating gaps between the bottom cover plate and the outer shell. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the bottom cover plate separation structure in this utility model.

[0016] Figure 3 This is a top-section diagram of the outer shell structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the overall side view structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the orthographic structure of the outer shell in this utility model.

[0019] in:

[0020] 1. Outer shell; 2. Fixed cover plate; 3. Output terminal; 4. Sealing mechanism; 5. Bottom cover plate; 6. Fastener; 7. Fastening hole; 8. Side positioning rod; 9. Isolation mechanism; 10. Separator plate; 11. Capacitor core; 12. Insulating heat shrink tubing; 13. Lead wire; 14. Side slot; 15. Silicone pad. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 5 As shown, a power capacitor includes a housing 1 and capacitor cores 11. A fixed cover plate 2 is connected to the top of the housing 1, and output terminals 3 are symmetrically connected through the top of the fixed cover plate 2. A sealing mechanism 4 is provided at the bottom of the housing 1. The sealing mechanism 4 is positioned inside the housing 1, thereby supporting and positioning the bottom ends of multiple sets of capacitor cores 11. An isolation mechanism 9 is provided inside the housing 1. The isolation mechanism 9 separates the multiple sets of capacitor cores 11, thereby preventing heat from accumulating inside the housing 1 and facilitating isolation and cooling.

[0023] In this embodiment, the sealing mechanism 4 includes a bottom cover plate 5, fasteners 6, fastening holes 7, and side positioning rods 8. The side positioning rods 8 are symmetrically arranged above the bottom cover plate 5. The side positioning rods 8 penetrate through the interior of the outer shell 1. The outer side of the outer shell 1 is symmetrically provided with fastening holes 7. The outer side of the side positioning rods 8 is also provided with fastening holes 7. The fasteners 6 penetrate through one side of the fastening holes 7. The capacitor core 11 is arranged above the bottom cover plate 5.

[0024] In this embodiment, the outer shell 1 is connected to the side positioning rod 8 through a through fastener 6, and the bottom cover plate 5 is connected and locked by the symmetrically arranged side positioning rod 8.

[0025] In this embodiment, the isolation mechanism 9 includes a partition plate 10, a capacitor core 11, an insulating heat shrink tubing 12, a lead wire 13, a side slot 14, and a silicone pad 15. The partition plate 10 is symmetrically arranged inside the outer shell 1. The side slots 14 are symmetrically opened inside the outer shell 1. The silicone pads 15 are symmetrically arranged inside the outer shell 1. The capacitor core 11 is arranged inside the outer shell 1. The top end of the capacitor core 11 is connected to the lead wire 13. The outer side of the lead wire 13 is connected to the insulating heat shrink tubing 12. The other end of the lead wire 13 is connected to the bottom end of the output terminal 3.

[0026] In this embodiment, the capacitor core 11 is connected to the inside of the insulating heat shrink tubing 12 via a lead wire 13 provided at the top, and is connected to the bottom end of the output terminal 3 via the lead wire 13 provided at the top of the capacitor core 11.

[0027] In this embodiment, the outer shell 1 is connected to both sides of the partition plate 10 through symmetrically opened side slots 14, and the two sides of the partition plate 10 are engaged and separated by the symmetrically arranged side slots 14.

[0028] In practical applications, this type of power capacitor includes the following functions:

[0029] Step 1: Before use, insert the alloy partition plate 10 into the inside of the outer shell 1, so that the side slot 14 inside the outer shell 1 is connected to the two sides of the partition plate 10, and the silicone pad 15 is attached to the two sides of the inside of the outer shell 1. Then, the silicone pad 15 is attached to the outside of the capacitor core 11, which facilitates the auxiliary heat dissipation of the capacitor core 11. The symmetrically arranged partition plates 10 isolate the two sides of the capacitor core 11.

[0030] Step 2: The operator inserts the side positioning rod 8 set at the top of the bottom cover plate 5 into the inside of the outer shell 1, so that the fastener 6 is inserted laterally into the fastening hole 7, so that the fastener 6 is inserted laterally and locked to the outside of the outer shell 1 and the side positioning rod 8. The bottom cover plate 5 is used to support and position the bottom of the outer shell 1 and the multiple sets of capacitor cores 11. The partition plate 10 is used to isolate the heat on the outside of the capacitor core 11 and absorb the heat of the capacitor core 11.

[0031] Step 3: The operator sets two sets of lead wires 13 on the top of the capacitor core 11, and nests and fixes the insulating heat shrink tubing 12 on the outside of the lead wires 13. The operator then uses a hot air gun to heat the insulating heat shrink tubing 12 so that it wraps around the lead wires 13. At the same time, the metal end of the lead wires 13 is welded to the bottom end of the output terminal 3. Insulating glue is then applied to the bottom end of the fixed cover plate 2 so that the fixed cover plate 2 is connected to the top of the outer shell 1.

[0032] Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A power capacitor, characterized in that: The device includes a housing (1) and capacitor cores (11). A fixed cover plate (2) is connected to the top of the housing (1). Output terminals (3) are symmetrically connected through the top of the fixed cover plate (2). A sealing mechanism (4) is provided at the bottom of the housing (1). The sealing mechanism (4) is positioned inside the housing (1) to support and position the bottom of multiple sets of capacitor cores (11). An isolation mechanism (9) is provided inside the housing (1) to separate multiple sets of capacitor cores (11) and prevent the heat of the capacitor cores (11) from accumulating inside the housing (1), thus facilitating isolation and cooling.

2. The power capacitor according to claim 1, characterized in that: The sealing mechanism (4) includes a bottom cover plate (5), fasteners (6), fastening holes (7), and side positioning rods (8). The side positioning rods (8) are symmetrically arranged above the bottom cover plate (5). The side positioning rods (8) penetrate the interior of the outer shell (1). The outer shell (1) is symmetrically provided with fastening holes (7). The outer side of the side positioning rods (8) is also provided with fastening holes (7). The fasteners (6) are penetrated through one side of the fastening holes (7). A capacitor core (11) is provided above the bottom cover plate (5).

3. A power capacitor according to claim 2, characterized in that: The outer shell (1) is connected to the side positioning rod (8) through a through fastener (6).

4. A power capacitor according to claim 1, characterized in that: The isolation mechanism (9) includes a partition plate (10), a capacitor core (11), an insulating heat shrink tubing (12), a lead wire (13), a side slot (14), and a silicone pad (15). The partition plate (10) is symmetrically arranged inside the outer shell (1). The side slot (14) is symmetrically opened inside the outer shell (1). The silicone pad (15) is symmetrically arranged inside the outer shell (1). The capacitor core (11) is arranged inside the outer shell (1). The top of the capacitor core (11) is connected to the lead wire (13). The outside of the lead wire (13) is connected to the insulating heat shrink tubing (12). The other end of the lead wire (13) is connected to the bottom of the output terminal (3).

5. A power capacitor according to claim 4, characterized in that: The capacitor core (11) is connected to the interior of the insulating heat shrink tubing (12) via a lead wire (13) provided at the top.

6. A power capacitor according to claim 4, characterized in that: The outer shell (1) is connected to both sides of the partition plate (10) through symmetrically opened slots (14).

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