Pressure-resistant high-capacity capacitor

Abstract

The utility model relates to a kind of high-capacity capacitor of voltage resistance in capacitor technical field, including electrode core, electrode core is by first single-layer metallized film, second single-layer metallized film, insulating film and double-sided metallized film sequentially stacked and is wound into columnar structure, and the both ends of electrode core are equipped with spray gold particle layer, first single-layer metallized film includes first insulating layer and first plating layer, second single-layer metallized film includes second insulating layer and second plating layer, first single-layer metallized film and second single-layer metallized film are mutually close by first plating layer and second plating layer Stack, the middle part of double-sided metallized film is third insulating layer, the bottom end face and bottom end face of double-sided metallized film are respectively upper plating layer and lower plating layer, play the role of shunt voltage division, so that capacitor is better used to filter noise and ripple in power supply, provide stable voltage, and the symmetrical structure of two layers of single-layer metallized film is set to ensure that self-healing ability is strong, the advantage that charge and discharge are fast.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, and in particular to a high-voltage, high-capacity capacitor. Background Technology

[0002] A capacitor consists of two conductors placed close together, with a non-conductive insulating dielectric layer in between. When a voltage is applied between the two plates of a capacitor, it stores electrical charge. The capacitance of a capacitor is numerically equal to the ratio of the charge on one of the conducting plates to the voltage between the two plates.

[0003] The existing Chinese utility model patent with publication number CN204045399U discloses a metallized film capacitor, including a first metallized film and a second metallized film. Both the first and second metallized films are rectangular, and the first and second metallized films are staggered and overlapped. It has advantages such as the vapor-deposited metal being resistant to damage, strong self-healing ability, and fast charging and discharging.

[0004] While existing metallized film capacitors utilize self-healing metallized films as their raw material, possessing a certain degree of self-healing capability and fast charging / discharging characteristics, the special manufacturing process of metallized films inevitably leads to a decrease in voltage withstand and capacitance despite their self-healing properties. Therefore, there is an urgent need to develop a high-voltage, high-capacitance capacitor to meet practical application requirements. Utility Model Content

[0005] The purpose of this invention is to provide a high-voltage, high-capacity capacitor to address the aforementioned shortcomings.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A high-capacity capacitor with withstand voltage includes an electrode core. The electrode core is formed by stacking and winding a first single-layer metallized film, a second single-layer metallized film, an insulating film, and a double-sided metallized film in sequence into a columnar structure. The two ends of the electrode core are provided with gold-sprayed particle layers. The first single-layer metallized film includes a first insulating layer and a first plating layer. The second single-layer metallized film includes a second insulating layer and a second plating layer. The first single-layer metallized film and the second single-layer metallized film are stacked close to each other through the first plating layer and the second plating layer. The middle part of the double-sided metallized film is a third insulating layer. The bottom end face and the bottom end face of the double-sided metallized film are respectively the upper plating layer and the lower plating layer.

[0007] In the above description, as a further embodiment, the first plating layer and the second plating layer extend to one end of the electrode core, and the first plating layer and the second plating layer are electrically connected to the gold-plated particle layer at one end. The upper plating layer and the lower plating layer extend to the other end of the electrode core, and the upper plating layer and the lower plating layer are electrically connected to the gold-plated particle layer at the other end.

[0008] In the above description, as a further embodiment, the first plating layer and the second plating layer extend to one end of the electrode core, and the first plating layer and the second plating layer are electrically connected to the gold-plated particle layer at one end. The upper plating layer and the lower plating layer are arranged in a centrally symmetrical structure along the third insulating layer, and the first plating layer and the second plating layer are electrically connected to the gold-plated particle layers at both ends of the electrode core, respectively.

[0009] In the above description, as a further embodiment, the first single-layer metallized film and the second single-layer metallized film have a centrally symmetrical structure along the horizontal plane, an isolation film is provided between the first plating layer and the second plating layer, and the first plating layer and the second plating layer are electrically connected to the gold-sprayed particle layers at both ends of the electrode core.

[0010] As a further embodiment of the above description, a gap section is provided in the middle of both the upper and lower plating layers, and the two sides of the upper and lower plating layers extend to the ends of the gold-plated particle layer for electrical connection.

[0011] As a further embodiment of the above description, the top surface of the first single-layer metallized film and the bottom surface of the double-layer metallized film are both provided with an outer coating film, and metal pins are provided on both sides of the columnar structure electrode core. One end of the metal pin is welded to the center of the gold-sprayed particle layer, and the other end of the metal pin extends to the outside of the columnar structure electrode core.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by stacking the first and second plating layers of the first and second single-layer metallized films close to each other, the voltage of the capacitor can be evenly distributed in the first and second plating layers, which plays the role of current shunting and voltage division, so that the capacitor can better filter out noise and ripple in the power supply and provide a stable voltage. At the same time, the symmetrical structure of the two single-layer metallized films ensures the advantages of strong self-healing ability and fast charging and discharging. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the high-voltage, high-capacity capacitor described above. Figure 2 This is a cross-sectional view of a high-voltage, high-capacity capacitor as described in Embodiment 1; Figure 3 This is an exploded view of the structure of a high-voltage, high-capacity capacitor as described in Example 2; Figure 4 This is a cross-sectional view of a high-voltage, high-capacity capacitor as described in Example 3; In the figure: 1-outer coating, 2-first single-layer metallized film, 21-first insulating layer, 22-first plating layer, 3-second single-layer metallized film, 31-second insulating layer, 32-second plating layer, 4-double-sided metallized film, 41-third insulating layer, 42-upper plating layer, 43-lower plating layer, 44-spaced section, 5-insulating film, 6-gold sputtering particle layer, 7-isolation film, 10-electrode core, 11-metal pin. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] For this embodiment, please refer to Figures 1-4 The specific implementation of this high-voltage, high-capacity capacitor includes an electrode core 10. The electrode core 10 is formed by sequentially stacking and winding a first single-layer metallized film 2, a second single-layer metallized film 3, an insulating film 5, and a double-sided metallized film 4 into a columnar structure. Gold-plated particle layers 6 are provided at both ends of the electrode core 10. The first single-layer metallized film 2 includes a first insulating layer 21 and a first plating layer 22. The second single-layer metallized film 3 includes a second insulating layer 31 and a second plating layer 32. The first single-layer metallized film 2 and the second single-layer metallized film 3 are connected by the first plating layer... Layer 22 and the second plating layer 32 are stacked close to each other. The middle part of the double-sided metallized film 4 is the third insulating layer 41. The bottom end face of the double-sided metallized film 4 is the upper plating layer 42 and the lower plating layer 43, respectively. The top end face of the first single-layer metallized film 2 and the bottom end face of the double-sided metallized film 4 are both provided with an outer coating film 1. The columnar structure electrode core 10 is also provided with metal pins 11 on both sides. One end of the metal pin 11 is welded to the center of the gold-sprayed particle layer 6, and the other end of the metal pin 11 extends to the outside of the columnar structure electrode core 10.

[0016] In Example 1, as Figure 2 As shown, the first plating layer 22 and the second plating layer 32 extend to one end of the electrode core 10, and the first plating layer 22 and the second plating layer 32 are electrically connected to the gold-sprayed particle layer 6 at one end. The upper plating layer 42 and the lower plating layer 43 extend to the other end of the electrode core 10, and the upper plating layer 42 and the lower plating layer 43 are electrically connected to the gold-sprayed particle layer 6 at the other end. The first plating layer 22 and the second plating layer 32 are stacked close to each other through the first single-layer metallization film 2 and the second single-layer metallization film 3, so that the voltage of the capacitor can be evenly distributed in the first plating layer 22 and the second plating layer 32. At the same time, the symmetrical structure of the two single-layer metallization films ensures the advantages of strong self-healing ability and fast charging and discharging.

[0017] In Example 2, as Figure 3As shown, the first plating layer 22 and the second plating layer 32 extend to one end of the electrode core 10, and the first plating layer 22 and the second plating layer 32 are electrically connected to the gold-plated particle layer 6 at one end. The upper plating layer 42 and the lower plating layer 43 are arranged in a centrally symmetrical structure along the third insulating layer 41. The first plating layer 22 and the second plating layer 32 are electrically connected to the gold-plated particle layers 6 at both ends of the electrode core. In the double-sided metallized film 4, the upper plating layer 42 and the lower plating layer 43 are arranged in a centrally symmetrical structure, so that the positive motor of the upper plating layer 42 is clamped between the first plating layer 22, the second plating layer 32 and the lower plating layer 43, so that the capacitor has the characteristic of instantaneous high withstand voltage, which is beneficial for the capacitor to filter and stabilize the instantaneous high voltage level in the circuit.

[0018] In Example 3, as Figure 4 As shown, the first single-layer metallized film 2 and the second single-layer metallized film 3 are centrally symmetrical along the horizontal plane. An isolation film 7 is provided between the first plating layer 22 and the second plating layer 32. The first plating layer 22 and the second plating layer 32 are electrically connected to the gold-sprayed particle layers 6 at both ends of the electrode core 10. A gap section 44 is provided in the middle of the upper plating layer 42 and the lower plating layer 43. The two sides of the upper plating layer 42 and the lower plating layer 43 extend to the ends of the gold-sprayed particle layers 6 for electrical connection. By providing a gap section 44 in the middle of the upper plating layer 42 and the lower plating layer 43, the double-sided metallized film 4 is divided into two independent electrode layers. At the same time, the first single-layer metallized film 2 and the second single-layer metallized film 3 are centrally symmetrically arranged, so that there are two potential differences in the capacitor that can work independently at the same time, which plays the role of current division and voltage division, so that the capacitor can better filter out noise and ripple in the power supply and provide a stable voltage.

[0019] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A high-voltage, high-capacity capacitor, comprising an electrode core, characterized in that: The electrode core is composed of a first single-layer metallized film, a second single-layer metallized film, an insulating film, and a double-sided metallized film stacked and wound into a columnar structure. The two ends of the electrode core are provided with gold-sprayed particle layers. The first single-layer metallized film includes a first insulating layer and a first plating layer. The second single-layer metallized film includes a second insulating layer and a second plating layer. The first single-layer metallized film and the second single-layer metallized film are stacked close to each other through the first plating layer and the second plating layer. The middle part of the double-sided metallized film is a third insulating layer. The bottom end face and the bottom end face of the double-sided metallized film are respectively the upper plating layer and the lower plating layer.

2. The high-voltage, high-capacitance capacitor according to claim 1, characterized in that: The first and second plating layers extend to one end of the electrode core and are electrically connected to the gold-plated particle layer at one end. The upper and lower plating layers extend to the other end of the electrode core and are electrically connected to the gold-plated particle layer at the other end.

3. The high-voltage, high-capacitance capacitor according to claim 1, characterized in that: The first and second plating layers extend to one end of the electrode core, and are electrically connected to the gold-plated particle layer at one end. The upper and lower plating layers are arranged in a centrally symmetrical structure along the third insulating layer, and the first and second plating layers are electrically connected to the gold-plated particle layers at both ends of the electrode core.

4. A high-voltage, high-capacity capacitor according to claim 1, characterized in that: The first and second monolayer metallized films are centrally symmetrical along the horizontal plane. An isolation film is provided between the first and second plating layers. The first and second plating layers are electrically connected to the gold-sprayed particle layers at both ends of the electrode core.

5. A high-voltage, high-capacity capacitor according to claim 4, characterized in that: Both the upper and lower plating layers have a gap in the middle, and the two sides of the upper and lower plating layers extend to the ends of the gold-sprayed particle layer for electrical connection.

6. A high-voltage, high-capacitance capacitor according to any one of claims 1-5, characterized in that: The top surface of the first single-layer metallized film and the bottom surface of the double-layer metallized film are both provided with an outer coating film. The two sides of the columnar structure electrode core are also provided with metal pins. One end of the metal pin is welded to the center of the gold-sprayed particle layer, and the other end of the metal pin extends to the outside of the columnar structure electrode core.

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