Capacitor shell and capacitor
By setting a clamping part and a limiting part on the inner side wall of the capacitor shell, the gap between the lead wire and the side wall is increased, which solves the problems of small air bubble defects and irregular edges during capacitor potting, and improves the potting quality and core fixation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-03-27
AI Technical Summary
The small gap between the leads and the sidewall of the existing capacitor leads causes small air bubbles and irregular edges during potting, affecting the potting quality and making the core prone to floating.
A clamping part is provided on the inner side wall of the capacitor casing to increase the gap between the lead wire and the side wall, and the lead wire is clamped by the clamping part. With the help of limiting and supporting parts, the epoxy resin is fully filled and fixed to the core.
This solution addresses the potting defects and core floating issues caused by insufficient gap between the lead wire and the sidewall, thereby improving potting quality and product stability.
Smart Images
Figure CN224053019U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to capacitor technical field, especially a kind of capacitor shell and capacitor. BACKGROUND
[0002] The application environment of control driving equipment in new energy field is usually very bad, such as photovoltaic and wind power equipment is often built in coastal area, even in offshore. At this time, moisture is easy to enter the capacitor core inside along the defect of the capacitor epoxy resin of driving equipment under high temperature, and the moisture and metallized film have oxidation reaction, which finally leads to the failure of capacitor, and the performance of capacitor is absolutely related to the stable operation of equipment.
[0003] The defect of the epoxy resin of the capacitor is usually generated in the potting process of the capacitor. When potting, due to the small gap between the lead-out wire of the capacitor and the side wall of the shell, the epoxy resin is difficult to completely fill the gap, and air is easily retained to form small bubbles at the connection between the lead-out wire and the epoxy resin, causing defects, and also easily causing the liquid epoxy resin to climb along the lead-out wire or the side wall. The epoxy resin that climbs is irregular after solidification, which increases the positioning deviation rate of the subsequent automatic assembly process. SUMMARY
[0004] The utility model provides a kind of capacitor shell and capacitor, solve the technical problems that the gap between the lead-out wire of existing capacitor and shell side wall is too small to cause potting to produce small bubble defect and irregular edge.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] In a first aspect, the utility model provides a kind of capacitor shell, comprising:
[0007] A shell is provided with an opening at one end, and the inside of the shell is used to install a core; and
[0008] A compression part is arranged on the side wall of the shell, the compression part is arranged corresponding to the lead-out wire of the core, and the compression part can compress the lead-out wire away from the side wall of the shell.
[0009] In one embodiment, the contact surface of the compression part and the lead-out wire is configured as an arc convex surface structure.
[0010] In one embodiment, the compression part includes a first clamping block protruding from the side wall of the shell away from the side wall of the shell, and a first arc chamfer is arranged on the first clamping block.
[0011] In one embodiment, the width of the pressing part is greater than the diameter of the lead-out wire, and the pressing part is provided with a notch extending along the length direction of the lead-out wire, the notch being matched with the lead-out wire to limit the movement of the lead-out wire along the width direction of the pressing part.
[0012] In one embodiment, the side wall of the shell with the pressing part is provided with a groove extending along the length direction of the lead-out wire, and the lead-out wire is provided with a protruding part, the groove and the protruding part of the lead-out wire being matched with each other.
[0013] In one embodiment, the shell of the capacitor further comprises a limiting part, the limiting part being arranged on the inner side of the side wall of the shell and being arranged in the length direction of the lead-out wire away from the pressing part, the lead-out wire being provided with a protruding part, and the limiting part limiting the protruding part of the lead-out wire.
[0014] In one embodiment, the limiting part comprises a second clamping block protruding from the side wall of the shell away from the side wall of the shell, and the second clamping block is provided with a second arc-shaped chamfered part close to the opening and a limiting right-angled part away from the opening.
[0015] In one embodiment, the shell of the capacitor further comprises a supporting part, the supporting part being arranged on the inner side of the bottom wall of the shell, and the supporting part being connected with the core part to support the core part and form a gap between the core part and the inner side of the bottom wall of the shell.
[0016] In one embodiment, the supporting part is configured as a convex rib protruding from the inner side of the bottom wall of the shell away from the inner side of the bottom wall of the shell, and the convex rib is provided with a channel penetrating through both sides of the convex rib.
[0017] In the second aspect, the utility model provides a kind of capacitor, including the shell of capacitor as described above, further include core part, the lead-out wire of the core part is installed at the pressing part.
[0018] Compared with prior art, the utility model has the advantages that by setting the pressing part on the inner side of the side wall of the shell of the shell of capacitor corresponding to the position of the lead-out wire of the core part, the lead-out wire of the core part is away from the side wall of the shell, the gap between the lead-out wire and the side wall is increased, so that the epoxy resin can completely fill the gap between the lead-out wire and the side wall, thereby solving the technical problems of small gap between the lead-out wire and the side wall of the existing capacitor, small air bubble defect and irregular edge caused by pouring, improving the pouring quality, and the lead-out wire is pressed tightly, which assists in clamping and fixing the core part. BRIEF DESCRIPTION OF DRAWINGS
[0019] The utility model will be based on the embodiment and refer to the drawings to carry out more detailed description in the following.
[0020] Figure 1 The three-dimensional structure schematic view of the capacitor shell provided for the embodiment of the utility model is provided.
[0021] Figure 2 The three-dimensional structure perspective view of the capacitor shell provided for the embodiment of the utility model is provided.
[0022] Figure 3 The top view of the capacitor shell provided for the embodiment of the utility model is provided.
[0023] Figure 4 The side view of the capacitor shell provided for the embodiment of the utility model is provided.
[0024] Figure 5 The front view of the capacitor shell provided for the embodiment of the utility model is provided.
[0025] Figure 6 The partial structure sectional view of the capacitor provided for the embodiment of the utility model is provided.
[0026] Figure 7 The structure schematic view of the compression part provided with the notch provided for the embodiment of the utility model is provided.
[0027] Figure 8 The structure schematic view of the capacitor shell provided with the groove on the side wall provided for the embodiment of the utility model is provided.
[0028] Figure 9 The top view of the capacitor shell provided with the boss on the inner side of the bottom wall provided for the embodiment of the utility model is provided.
[0029] Reference signs:
[0030] 1, shell; 11, groove; 12, leg; 13, arc bottom; 14, support bump;
[0031] 2, compression part;
[0032] 3, limiting part;
[0033] 4, support part; 41, passage;
[0034] 5, core part; 51, lead-out wire;
[0035] 6, epoxy resin;
[0036] 7, boss. Specific implementation
[0037] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0039] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements, it can be wireless connection, or it can be wired connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0040] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.
[0041] Embodiment one
[0042] The present application provides a capacitor shell for forming a capacitor, which solves the technical problem of small gap between the lead-out wire of the existing capacitor and the side wall of the shell, causing small bubble defects and irregular edges during pouring, and improves the pouring quality.
[0043] As Figures 1 to 6 As shown in the figure, a capacitor shell includes a shell 1 and a compression part 2, the shell 1 has an opening at one end, the shell 1 is used to install the core part 5 inside, the compression part 2 is arranged on the side wall of the shell 1, the compression part 2 is arranged corresponding to the lead-out wire 51 of the core part 5, and the compression part 2 can compress the lead-out wire 51 away from the side wall of the shell 1. The capacitor shell is usually made of plastic material.
[0044] By setting the pressing part 2 at the position corresponding to the installation position of the lead-out wire 51 of the core 5 inside the side wall of the shell 1 of the capacitor shell, the lead-out wire 51 is pressed towards the core 5 by the pressing part 2, the lead-out wire 51 is separated from the inside of the side wall of the shell 1, the gap between the lead-out wire 51 and the inside of the side wall of the shell 1 is kept large enough, the problem of small bubbles and irregular edges caused by the small gap between the lead-out wire 51 and the inside of the side wall of the shell 1 is avoided, and the pressing part 2 also plays a role in assisting the clamping and fixing of the core 5, so that the problem of poor product pouring quality caused by the core 5 floating after being extruded by the epoxy resin 6 during pouring is solved.
[0045] In the existing production process, especially when the capacitor manufacturer wants to improve the production rate by using one-time pouring process instead of two-time pouring process, because the amount of liquid epoxy resin 6 poured at one time is large and the pouring speed is fast, it is more likely to cause small bubbles and floating of the core 5 due to the small gap between the lead-out wire 51 and the inside of the side wall of the shell 1, resulting in defects.
[0046] In view of the above technical problems, the capacitor shell provided by the utility model can reduce the problems of small bubbles, irregular edges and floating of the core 5 at the lead-out wire 51, and is beneficial to improve the product quality of one-time pouring process.
[0047] It should be noted that, as shown in Figure 2 and Figure 6 , the conventional capacitor usually has two lead-out wires 51, i.e. one positive and one negative, and the two lead-out wires 51 are usually arranged at the center positions of the left and right sides of the core 5, therefore, the pressing part 2 is also arranged at the center of the inside of the left and right side walls of the shell 1, and the left and right pressing parts 2 press the lead-out wires 51 on the left and right sides of the core 5 respectively, to ensure that the gap between the two lead-out wires 51 and the inside of the side wall is large enough, and the left and right opposite pressing parts 2 also play a role in assisting the clamping and fixing of the core 5, so that the floating of the core 5 during grouting is avoided.
[0048] Preferably, as shown in Figure 6 , the pressing part 2 is arranged at the middle upper part of the lead-out wire 51, close to the top surface of the core 5, which can better limit the free end of the lead-out wire 51 and is more conducive to the positioning of the subsequent automatic assembly process.
[0049] Preferably, as shown in Figure 6As shown, the contact surface of the pressing part 2 and the lead-out wire 51 is configured as an arc convex surface structure, specifically, the contact surface of the pressing part 2 and the lead-out wire 51 is arc convex along the length direction of the lead-out wire 51. By setting the contact surface of the pressing part 2 and the lead-out wire 51 as arc convex along the length direction of the lead-out wire 51, if the deformation amount is not considered, the contact between the pressing part 2 and the lead-out wire 51 is point contact at this time, which can make the core part 5 more smoothly installed into the shell 1, more labor-saving, and reduce the area of the contact surface of the pressing part 2 and the lead-out wire 51, which is more conducive to avoiding the generation of small bubbles at the contact surface during pouring. At the same time, by designing the arc convex surface, the wear of the surface of the lead-out wire 51 by the pressing part 2 during the installation of the core part 5 is reduced.
[0050] Specifically, the pressing part 2 includes a first clamping block protruding from the side wall of the shell 1 in a direction away from the side wall of the shell 1, and a first arc chamfer is configured on the first clamping block. The first clamping block is usually designed as a plastic structure integrally formed with the shell 1. In the embodiment, two first clamping blocks are oppositely arranged at positions on the center lines of the two sides of the shell 1, and the upper portions thereof are provided with first arc chamfers. In other embodiments, the first clamping blocks on each side can be arranged as multiple ones along the length direction of the lead-out wire 51 to achieve multi-point pressing.
[0051] In other embodiments, the upper portion of the contact surface of the pressing part 2 and the lead-out wire 51 can also be provided with a circular arc chamfer to facilitate the installation of the core part 5, and the contact position of the pressing part 2 and the lead-out wire 51 is provided as a plane parallel to the length direction of the lead-out wire 51. At this time, the contact position of the pressing part 2 and the lead-out wire 51 is linear contact along the length direction of the lead-out wire 51. Such arrangement is more uniform in stress than point contact, and is not easy to cause deformation and damage of the lead-out wire 51 due to excessive pressure of point contact.
[0052] Preferably, as shown in the drawings, Figure 7 As shown, the width of the pressing part 2 is greater than the diameter of the lead-out wire 51, and a notch extending along the length direction of the lead-out wire 51 is arranged on the pressing part 2, which cooperates with the lead-out wire 51 to limit the movement of the lead-out wire 51 along the width direction of the pressing part 2.
[0053] The width of the pressing part 2 is greater than the diameter of the lead-out wire 51, which is to facilitate installation and pressing. When the core part 5 is installed into the shell 1, it is not necessary to specially align the position of the lead-out wire 51 of the core part 5 and the pressing part 2. Even if the installation position of the lead-out wire 51 of the core part 5 deviates in the width direction of the pressing part 2 during installation, the width of the pressing part 2 is greater than the diameter of the lead-out wire 51, which can still ensure the close contact between the pressing part 2 and the lead-out wire 51.
[0054] For the sake of clarity, here Figure 7The lead wire 51 is made transparent, and the notch restricts the movement of the lead wire 51 along the width direction of the clamping part 2. By providing a notch on the clamping part 2 that extends along the length direction of the lead wire 51, the movement of the lead wire 51 along the width direction of the clamping part 2 can be restricted during installation, ensuring the consistency of the positioning of the lead wire 51, which is beneficial to the positioning of the capacitor in the subsequent automatic assembly process on the circuit board.
[0055] Preferred, such as Figure 8 As shown, the side wall of the housing 1 with the clamping part 2 is provided with a groove 11 extending along the length direction of the lead wire 51, and the lead wire 51 is provided with a protrusion. For clarity, this is shown here. Figure 8 The lead wire 51 is made transparent, and the groove 11 cooperates with the protrusion of the lead wire 51. The groove 11 limits and guides the protrusion of the lead wire 51. By providing a groove 11 along the length of the lead wire 51 on the side wall of the housing 1 below the clamping part 2, the groove 11 can limit and guide the protrusion of the lead wire 51, and further increase the gap between the lead wire 51 and the inner side wall of the housing 1, thereby improving the potting quality.
[0056] Figure 8 The groove 11 is located below the pressing part 2. In other embodiments, the groove 11 can be flexibly located above or below the pressing part 2 or on both sides of the pressing part 2, depending on the different positions of the protrusions of the pressing part 2 and the lead wire 51.
[0057] It should be noted that, as Figure 6 and Figure 8 As shown, some core 5 leads 51 have protrusions, and such as Figure 7 As shown, some core parts 5 have no protrusions in their lead wires 51. Even if the lead wires 51 of the core parts 5 do not have protrusions, by using this structure, it can at least further increase the gap between the lead wires 51 and the inner side wall of the housing 1. When installing core parts 5 with protrusions in their lead wires 51, since the housing 1 is made of plastic and the lead wires 51 are made of metal wire, both of which have a certain amount of deformability, the protrusions of the lead wires 51 can pass through the clamping part 2 from top to bottom. If the clamping part 2 has a rounded convex surface or a rounded chamfer at its top, the protrusions of the lead wires 51 can pass through the clamping part 2 more smoothly.
[0058] Preferred, such as Figure 6 As shown, the capacitor housing also includes a limiting part 3, which is disposed on the inner side of the side wall of the housing 1 and spaced apart from the pressing part 2 along the length direction of the lead wire 51. The lead wire 51 is provided with a protrusion, and the limiting part 3 limits the protrusion of the lead wire 51.
[0059] The protruding part of the lead-out wire 51 is designed to cooperate with the limiting part 3 to prevent the core part 5 from floating up; the connection mode is that a part of the lead-out wire 51 is connected to the body of the core part 5 by spot welding.
[0060] Specifically, as shown in Figure 6 , the limiting part 3 includes a second clamping block protruding from the side wall of the shell 1 in a direction away from the side wall of the shell 1, and a second arc-shaped chamfer part close to the opening of the shell 1 and a limiting right-angle part away from the opening of the shell 1 are configured on the second clamping block. The second arc-shaped chamfer part is arranged at the upper edge of the second clamping block to facilitate the protruding part of the lead-out wire 51 to pass through the second clamping block when being installed downward, and the limiting right-angle part arranged at the lower edge of the second clamping block is conducive to clamping the lead-out wire 51 after entering from the upper edge of the second clamping block, thereby playing a role of clamping and fixing the core part 5, and solving the problem that the core part 5 is easily floated up after being extruded by the epoxy resin 6 during pouring, thereby causing poor pouring quality of the product. The second clamping block is usually designed as a plastic structure integrally formed with the shell 1.
[0061] In this embodiment, when assembling the capacitor, the lead-out wire 51 of the core part 5 is perpendicular to the bottom surface of the shell 1, and the pressing part 2 and the limiting part 3 are located on the same straight line perpendicular to the bottom surface of the shell 1, and the pressing part 2 is located above the limiting part 3.
[0062] In other embodiments, corresponding to the different setting positions of the protruding part of the lead-out wire 51, the upper and lower positional relationship between the limiting part 3 and the pressing part 2 can also be reversed.
[0063] As shown in Figure 2 , a groove 11 is arranged on the inner side of the side wall of the shell 1, the pressing part 2 is arranged at the center of the opening above the groove 11, the limiting part 3 is arranged at the middle and lower part of the groove 11, and the side walls on both sides of the groove 11 are protruding.
[0064] Preferably, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 6 , the shell of the capacitor further includes a supporting part 4, the supporting part 4 is arranged on the inner side of the bottom wall of the shell 1, and the supporting part 4 is connected to the core part 5 to support the core part 5, so that a gap is generated between the core part 5 and the inner side of the bottom wall of the shell 1. By arranging the supporting part 4 to support the core part 5, a gap is generated between the core part 5 and the inner side of the bottom wall of the shell 1, which facilitates the core part 5 to be completely covered by the epoxy resin 6 during pouring, thereby preventing water vapor from entering.
[0065] Specifically, in this embodiment, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 6 , the shell of the capacitor further includes a supporting part 4, the supporting part 4 is arranged on the inner side of the bottom wall of the shell 1, and the supporting part 4 is connected to the core part 5 to support the core part 5, so that a gap is generated between the core part 5 and the inner side of the bottom wall of the shell 1. By arranging the supporting part 4 to support the core part 5, a gap is generated between the core part 5 and the inner side of the bottom wall of the shell 1, which facilitates the core part 5 to be completely covered by the epoxy resin 6 during pouring, thereby preventing water vapor from entering.As shown, the support part 4 is constructed as a protruding ridge extending from the inner side of the bottom wall of the housing 1 away from the inner side of the bottom wall of the housing 1, and a channel 41 is provided on the protruding ridge to pass through both sides of the protruding ridge. By providing a channel 41 to pass through both sides of the protruding ridge, the flow of liquid epoxy resin 6 during potting is facilitated, and the generation of air bubbles is reduced. The protruding ridge is usually designed as a plastic structure integrally molded with the housing 1.
[0066] It should be noted that, as Figures 1 to 6 As shown, the bottom of the shell 1 in this embodiment is an arc-shaped bottom 13. This design is more conducive to the flow of liquid epoxy resin 6 during potting and reduces the generation of air bubbles. Correspondingly, the protruding ridges are also set to arc shape.
[0067] To save materials, the bottom outer side of the casing 1 is also made into an arc shape, and to facilitate the placement of the capacitor, a support leg 12 is provided at the lower part of the arc-shaped bottom 13. Specifically, as shown... Figure 2 As shown, a support leg 12 is provided near each of the four corners of the arc-shaped base 13.
[0068] In other embodiments, the support 4 may also be in other structural forms, as long as it can support the core 5 and create a gap between it and the inner side of the bottom wall of the housing 1.
[0069] Preferred, such as Figure 9 As shown, the support 4 can also be a protruding post 7. For structural stability, specifically, four protruding posts 7 are provided on the inner side of the bottom wall of the housing 1. This arrangement not only provides stable support for the core 5 with the protruding posts 7, but also increases the gap between the protruding posts 7, which is more conducive to the flow of liquid epoxy resin 6 during potting, reduces the generation of air bubbles, ensures that the bottom of the core 5 is completely covered by epoxy resin 6, prevents moisture from entering, and improves product quality. The protruding posts 7 are usually designed as a plastic structure integrally molded with the housing 1.
[0070] Preferred, such as Figures 1 to 6 As shown, support protrusions 14 are provided at the four corners of the top of the housing 1. By providing support protrusions 14, the problem of increased positioning deviation rate in subsequent automatic assembly processes caused by irregular edges resulting from the epoxy resin 6 climbing along the lead wire 51 after grouting can be avoided.
[0071] As described above, the capacitor housing proposed by this utility model has a pressing part 2 provided on the inner side of the side wall of the housing 1, which can press the lead wire 51 of the core 5 in a direction away from the side wall of the housing 1. This can solve the technical problem that the lead wire 51 of the existing capacitor has too small a gap with the side wall of the housing, resulting in small air bubble defects and irregular edges in the potting process.
[0072] Example 2
[0073] like Figure 6As shown, the utility model provides a kind of capacitor, including the shell of above-mentioned capacitor, still include core part 5, the lead-out wire 51 of core part 5 is installed at the compression part 2.
[0074] To sum up, the utility model provides a kind of capacitor's shell and capacitor, by being provided with compression part 2 in the position of the lead-out wire 51 of core part 5 in the side wall in the shell 1 of capacitor's shell, make the lead-out wire 51 of core part 5 away from the side wall of shell 1, increase the gap between lead-out wire 51 and side wall, so that epoxy resin 6 can completely fill the gap between lead-out wire 51 and side wall, to be able to solve the technical problem that the gap of the lead-out wire 51 of existing capacitor and shell side wall is too small and causes the defect of small air bubble and irregular edge of pouring, improve the pouring quality, simultaneously, the lead-out wire 51 is compressed, auxiliary clamping and fixing core part 5, solve the problem that core part 5 is easily floated after being extruded by epoxy resin 6 when pouring, leading to the problem of poor product pouring quality.
[0075] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made and equivalent parts can be substituted without departing from the scope of the utility model. In particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A housing for a capacitor, characterized by The application relates to a capacitor shell. The shell is internally provided with a core. The compression part is arranged on the side wall of the shell and corresponds to the lead-out wire of the core. The contact surface of the compression part and the lead-out wire is in arc convex surface structure.
2. The capacitor housing of claim 1, wherein The compression part comprises a first clamping block protruding from the side wall of the shell in a direction away from the side wall of the shell, and a first arc chamfer part is arranged on the first clamping block.
3. The capacitor housing of claim 2, wherein The width of the compression part is greater than the diameter of the lead-out wire, and a notch extending along the length direction of the lead-out wire is arranged on the compression part.
4. The capacitor housing of claim 1, wherein The notch cooperates with the lead-out wire to limit the movement of the lead-out wire along the width direction of the compression part.
5. The capacitor housing of claim 1, wherein A groove extending along the length direction of the lead-out wire is arranged on the side wall of the shell with the compression part.
6. The capacitor housing of claim 1, wherein A limiting part is arranged on the inner side of the side wall of the shell and is spaced apart from the compression part along the length direction of the lead-out wire.
7. The capacitor housing of claim 6, wherein, The limiting part comprises a second clamping block protruding from the side wall of the shell in a direction away from the side wall of the shell, and a second arc chamfer part close to the opening and a limiting right-angle part away from the opening are arranged on the second clamping block.
8. The housing for a capacitor according to any one of claims 1 to 7, wherein A supporting part is arranged on the inner side of the bottom wall of the shell.
9. The capacitor housing of claim 8, wherein, The supporting part is connected with the core to support the core and form a gap between the core and the inner side of the bottom wall of the shell.
10. A capacitor characterized by The supporting part is in a convex rib protruding from the inner side of the bottom wall of the shell in a direction away from the inner side of the bottom wall of the shell, and a channel penetrating through both sides of the convex rib is arranged on the convex rib. The capacitor shell of any one of claims 1-9 is further provided with a core, and the lead-out wire of the core is arranged at the compression part.