Impact-resistant pulse capacitor

Abstract

An anti-impact pulse capacitor comprises a capacitor body, and the capacitor body comprises two supports which are oppositely arranged and a plurality of capacitor chips which are vertically arranged in the two supports at intervals. The support comprises a plurality of support plates which are arranged up and down at intervals, connecting pins which are vertically arranged among the plurality of support plates, and a plurality of fixing plates which are respectively arranged on the plurality of support plates and are used for fixing the connecting pins, and the plurality of support plates are opposite to the end parts of the plurality of capacitor chips. The structure of a capacitor body and the structure of a plastic package shell are improved, the structure of a support is specifically limited, a plurality of capacitor chips are vertically arranged at intervals, the capacitor chips are arranged in a large-gap mode, enough deformation space is reserved, and the capacitor chips can be integrally distorted and deformed to a certain degree at the moment when impact is borne, and the reliability of the capacitor is not affected.

Description

Technical Field

[0001] The utility model belongs to the field of pulse capacitor preparation, and in particular relates to an impact-resistant pulse capacitor. Background Art

[0002] Pulse capacitors can store the energy charged by a low-power source over a long period of time. When needed, they release this energy rapidly in a very short period of time, generating a powerful surge current and surge power. They are primarily used in high-voltage testing, high-energy physics, laser technology, oscillation circuits, geological prospecting, and other fields.

[0003] Existing pulse capacitors are mostly used in ignition, detonation, detonation and other occasions, so they need to have sufficient high impact resistance. Summary of the Invention

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an impact-resistant pulse capacitor.

[0005] The utility model adopts the following technical solutions:

[0006] A shock-resistant pulse capacitor includes a capacitor body, which includes two brackets arranged opposite to each other and a plurality of capacitor chips arranged in the two brackets at intervals up and down. The brackets include a plurality of support plates arranged at intervals up and down, connecting pins arranged vertically between the plurality of support plates, and a plurality of fixing plates respectively arranged on the plurality of support plates for fixing the connecting pins. The plurality of support plates are opposite to the ends of the plurality of capacitor chips.

[0007] Furthermore, the connecting pin includes multiple connecting sections arranged on the outside of multiple support plates, a curved avoidance section connected between two adjacent connecting sections, and a pin section connected to the connecting section at the upper end, and the curved avoidance section is opposite to the spacing between two adjacent capacitor chips.

[0008] Furthermore, the fixing plate is formed with a fixing groove extending outward from an inner side surface thereof for fixing the connecting pins.

[0009] Furthermore, the fixing groove is U-shaped.

[0010] Furthermore, the support plate is provided with a first air hole opposite to the end of the capacitor chip, and the fixing plate is provided with a second air hole opposite to the first air hole.

[0011] Furthermore, it also includes a plastic-encapsulated shell and a potting layer. The plastic-encapsulated shell includes a receiving cavity for placing the capacitor body, and the potting layer is arranged in the receiving cavity to fix the capacitor body.

[0012] Furthermore, the plastic-encapsulated shell includes a main body section and an arc-shaped force-bearing section arranged on one side of the main body section, and the accommodating cavity is arranged in the main body section.

[0013] Furthermore, the plastic package shell further includes a plurality of partitions arranged in the stress-bearing cavity, and the plurality of partitions divide the stress-bearing cavity into a plurality of first cavities and a plurality of second cavities that are alternately arranged at intervals.

[0014] Furthermore, the plastic-sealed shell further includes a plurality of potting strips respectively arranged in the second cavity, and the plurality of potting strips are arranged at intervals in the force-bearing cavity.

[0015] Furthermore, a plurality of reinforcing ribs are arranged at intervals on the inner wall of the accommodating cavity.

[0016] From the above description of the utility model, it can be seen that compared with the prior art, the beneficial effects of the utility model are as follows: the present application improves the structure of the capacitor body and the structure of the plastic shell by limiting the structure of the pulse capacitor, and specifically limits the structure of the bracket so that multiple capacitor chips are arranged at intervals up and down, and there are large gaps between the capacitor chips, leaving enough deformation space so that the whole can be twisted and deformed to a certain extent at the moment of impact without affecting its reliability; in addition, the structure of the existing plastic shell is changed, an arc-shaped force-bearing section is added and the structure of the arc-shaped force-bearing section is further limited, so that the arc-shaped force-bearing section as the force direction can absorb the impact stress and squeeze deformation when subjected to high impact, thereby reducing the impact on the capacitor body, so that the prepared pulse capacitor has extremely strong shock resistance and adaptability, and has extremely high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is an exploded schematic diagram of the utility model;

[0019] Figure 3 It is a partial structural diagram of the utility model;

[0020] Figure 4 It is a structural diagram of the plastic shell;

[0021] Figure 5 It is a structural diagram of the capacitor body;

[0022] Figure 6 This is a schematic diagram of the decomposition of the capacitor body;

[0023] Figure 7 is a structural diagram of the connection pins;

[0024] Figure 8 is a structural diagram of the fixed plate;

[0025] In the figure, 1-capacitor body, 2-plastic shell, 3-potting layer, 4-mounting seat, 11-bracket, 12-capacitor chip, 13-support plate, 131-first vent 14-connecting pin, 141-connecting section, 142-bending avoidance section, 143-pin section, 15-fixing plate, 151-fixing groove, 152-second vent, 21-accommodating cavity, 211-reinforcement rib, 22-force cavity, 23-main body Segment, 24-arc-shaped force-bearing segment, 25-partition, 26-potting strip, 27-reinforcement rib, 28-first cavity, 29-second cavity, 41-mounting seat body, 411-fixing groove, 42-mounting groove, 43-clamping piece, 431-clamping piece body, 432-support segment, 44-carrier plate, 45-fixing mechanism, 451-fixing screw hole, 452-positioning hole, 453-fixing bolt, 454-fixing nut. DETAILED DESCRIPTION

[0026] The present invention is further described below through specific implementation methods.

[0027] Reference Figures 1 to 8 As shown, a shock pulse resistant capacitor includes a capacitor body 1, a plastic package shell 2, a potting layer 3 and a mounting seat 4.

[0028] The capacitor body 1 includes two brackets 11 arranged opposite to each other and a plurality of capacitor chips 12 arranged in the two brackets 11 at intervals in the upper and lower directions.

[0029] The bracket 11 includes a plurality of support plates 13 spaced apart from each other, a connecting pin 14 vertically arranged between the plurality of support plates 13, and a plurality of fixing plates 15 respectively arranged on the plurality of support plates 13 for fixing the connecting pin 14, wherein the plurality of support plates 13 are opposite to the ends of the plurality of capacitor chips 12; specifically, the fixing plate 15 is formed with a fixing groove 151 extending outward from its inner side surface for fixing the connecting pin 14, and the fixing groove 151 is U-shaped, allowing the connecting pin 14 to be displaced and deformed in the fixing groove 151; further, the support plate 13 is provided with a first vent hole 131 opposite to the end of the capacitor chip 12 The fixing plate 151 is provided with a second air hole 152 opposite to the first air hole 131. The gas generated by the solder during reflow soldering is discharged outward through the first air hole 131 and the second air hole 152; by limiting the structure of the bracket 11, the support plate 13 is provided to wrap the end of the capacitor chip 12, and the fixing plate 15 is provided to limit and fix the connecting pin 14, while increasing the overall force-bearing area of the end of the capacitor chip 12 and the overall structural strength of the bracket 1, and the way the support plate 13 and the fixing plate 15 are arranged inside and outside can ensure that the pulling and deformation process of the connecting pin 14 will not cause damage to the end of the capacitor chip 12.

[0030] The connecting pin 14 includes a plurality of connecting segments 141 arranged on the outside of the plurality of support plates 13, a curved avoidance segment 142 connected between two adjacent connecting segments 141, and a pin segment 143 connected to the upper end connecting segment, wherein the curved avoidance segment 142 is opposite to the spacing between the two adjacent capacitor chips 12. By limiting the structure of the connecting pin 14, a large gap is arranged between the capacitor chips 12, leaving sufficient deformation space, so that the entire capacitor can be twisted and deformed to a certain extent at the moment of impact without affecting its reliability. The curved avoidance segment 142 is provided, which is opposite to the gap between the two capacitor chips 12, so that the connecting pin 14 can be stretched and deformed within a certain range, further improving the reliability of the capacitor. Specifically, two connecting pins 14 are provided, and the two connecting pins 14 are spaced apart and arranged between the plurality of support plates 13.

[0031] The plastic-sealed shell 2 includes an accommodating cavity 21 and a stress-bearing cavity 22 arranged at intervals, wherein the capacitor body 1 is arranged in the accommodating cavity 21. Specifically, the plastic-sealed shell 2 includes a main body section 23 and an arc-shaped stress-bearing section 24 arranged on one side of the main body section 23. The accommodating cavity 21 is arranged in the main body section 23, and the stress-bearing cavity 22 is arranged in the arc-shaped stress-bearing section 24. By limiting the shape of the plastic-sealed shell 2, the arc-shaped stress-bearing section 24 on its side is upwardly located above the main body section 23 when the pulse capacitor is installed. As the force direction of the impact, when subjected to a high impact, the stress-bearing cavity 22 is squeezed and deformed to absorb the impact stress and reduce the impact on the capacitor body 1; further In the next step, the plastic-sealed shell 2 also includes a plurality of partitions 25 and a plurality of potting strips 26 spaced apart in the stress-bearing cavity 22 and a plurality of reinforcing ribs 211 spaced apart on the inner wall of the accommodating cavity 21. The plurality of partitions 25 divide the stress-bearing cavity 22 into a plurality of first cavities 27 and a plurality of second cavities 28 spaced apart and alternately arranged. The plurality of potting strips 26 are respectively arranged in the plurality of second cavities 29, further limiting the structure in the stress-bearing cavity 22. The plurality of potting strips 26 are staggered to reduce the strength of the stress-bearing cavity 22, making it a weak point of the entire plastic-sealed shell 2. When impacted, it can be deformed first, and has a certain reset ability after deformation, thereby further improving the reliability of the capacitor.

[0032] The potting layer 3 is arranged in the accommodating cavity 21 and is used to fix the capacitor body 1. Its end face is flush with the end face of the main section 23 of the plastic shell. Specifically, the multiple reinforcing ribs 211 arranged at intervals in the accommodating cavity 21 can increase the contact area between the potting layer 3 and the inner wall of the accommodating cavity 21 after potting, so as to increase the bonding force between the potting layer 3 and the plastic shell 2.

[0033] The mounting base 4 is used to mount the capacitor body 1 wrapped in the plastic shell 2 on the circuit board, and includes a mounting base body 41, a mounting groove 42 provided on the mounting base body 41 for mounting the plastic shell 2, a clamping piece 43 provided on the mounting base body 41 for fixing the plastic shell 2, a carrier plate 44 provided at the bottom of the mounting base body 41, and a fixing mechanism 45 for fixing the clamping piece 43 and the mounting base body 41. Specifically, the mounting base body 41 is provided with a fixing groove 411 extending downward from its top surface, and the bottom surface of the fixing groove 411 is higher than the bottom surface of the mounting groove 42, which can limit the displacement of the capacitor body 1 in the impact direction; further, the area of the carrier plate 44 is larger than the area of the mounting base body 41.

[0034] The clamping piece 43 includes a clamping piece body 431 arranged in an inverted U shape and two supporting sections 432 arranged on both sides of the lower end of the clamping piece body 431. When the plastic shell 2 is fixed in the installation groove 42, the clamping piece body 431 is sleeved on the outer periphery of the plastic shell 2, and the supporting sections 432 are supported in the fixing groove 411.

[0035] The fixing mechanism 45 includes a fixing screw hole 451 extending downward from the bottom surface of the fixing groove 411 to the carrier plate 44, a positioning hole 452 provided on the support section 432 opposite to the fixing screw hole 451, a fixing bolt 453 passing through the positioning hole 452 and cooperating with the fixing screw hole 451, and a fixing nut 454 located below the carrier plate 44 and cooperating with the fixing bolt 453. By providing the structure of the fixing mechanism 45, the capacitor body 1 is clamped and fixed to the mounting base 4 to prevent vibration of the capacitor and deformation of the bottom of the mounting base body 41. It can also limit the transmission of vibration and deformation of the carrier plate 44, ensure the flatness of the carrier plate 44, increase the force bearing area of the fixing bolt 453, and prevent stress concentration from damaging the carrier plate 44.

[0036] The present application improves the structure of the capacitor body 1 and the structure of the plastic package shell 2 by limiting the structure of the pulse capacitor, and specifically limits the structure of the bracket 11 so that multiple capacitor chips 12 are arranged at intervals up and down, and the capacitor chips 12 are arranged with large gaps, leaving sufficient deformation space so that the whole body can be twisted and deformed to a certain extent at the moment of impact without affecting its reliability; in addition, the structure of the existing plastic package shell 2 is changed, an arc-shaped force-bearing section 24 is added and the structure of the arc-shaped force-bearing section 24 is further limited, so that the arc-shaped force-bearing section 24 as the force direction can absorb impact stress and squeeze deformation when subjected to high impact, thereby reducing the impact on the capacitor body 1, so that the prepared pulse capacitor has extremely strong shock resistance and replacement adaptability, and has extremely high reliability.

[0037] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of implementation of the present invention. In other words, equivalent changes and modifications made according to the scope of application of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A shock-resistant pulse capacitor, characterized in that: It includes a capacitor body, which includes two brackets arranged opposite to each other and a plurality of capacitor chips arranged in the two brackets with upper and lower intervals. The bracket includes a plurality of support plates arranged with upper and lower intervals, connecting pins vertically arranged between the plurality of support plates, and a plurality of fixing plates respectively arranged on the plurality of support plates for fixing the connecting pins. The plurality of support plates are opposite to the ends of the plurality of capacitor chips.

2. The anti-shock pulse capacitor according to claim 1, characterized in that: The connecting pins include multiple connecting sections arranged on the outside of multiple support plates, a curved avoidance section connected between two adjacent connecting sections, and a pin section connected to the upper end connecting section. The curved avoidance section is opposite to the spacing between two adjacent capacitor chips.

3. The anti-shock pulse capacitor according to claim 1, characterized in that: The fixing plate is formed with a fixing groove extending outward from an inner side surface thereof for fixing the connecting pins.

4. The anti-shock pulse capacitor according to claim 3, characterized in that: The fixing groove is arranged in a U shape.

5. The anti-shock pulse capacitor according to claim 1, characterized in that: The support plate is provided with a first air hole opposite to the end of the capacitor chip, and the fixing plate is provided with a second air hole opposite to the first air hole.

6. The anti-shock pulse capacitor according to claim 1, characterized in that: It also includes a plastic-encapsulated shell and a potting layer. The plastic-encapsulated shell includes a receiving cavity for placing the capacitor body, and the potting layer is arranged in the receiving cavity to fix the capacitor body.

7. The anti-shock pulse capacitor according to claim 6, characterized in that: The plastic-sealed shell includes a main body section and an arc-shaped force-bearing section arranged on one side of the main body section, and the accommodating cavity is arranged in the main body section.

8. The anti-shock pulse capacitor according to claim 7, characterized in that: The plastic package shell further includes a plurality of partitions arranged in the stress-bearing cavity, and the plurality of partitions divide the stress-bearing cavity into a plurality of first cavities and a plurality of second cavities that are alternately arranged at intervals.

9. The anti-shock pulse capacitor according to claim 8, characterized in that: The plastic-sealed shell further includes a plurality of potting strips respectively arranged in the second cavity, and the plurality of potting strips are arranged in the force-bearing cavity at intervals.

10. The anti-shock pulse capacitor according to claim 6, characterized in that: The inner wall of the accommodating cavity is provided with a plurality of reinforcing ribs at intervals.

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