Adjustable capacitor

Abstract

The utility model discloses an adjustable capacitor, which comprises a shell, a connecting terminal and a plurality of capacitor cores, and the capacitor cores and the connecting terminal are fixed on the shell. A conductive block and a through hole are also arranged in the shell, one end of the conductive block is connected with the pole end of the capacitor core, and the other end of the conductive block extends out of the shell through the through hole; a pressing block is arranged on the side, away from the conductive block, in the through hole. The connecting terminal is provided with a first conducting strip matched with the through hole and a second conducting strip used for being connected with external equipment. The second conducting strip is inserted between the conducting block and the pressing block through the first conducting strip and is electrically connected with the capacitor core. According to the adjustable capacitor, the connecting terminal and the capacitor core are arranged, the capacitor core extends out of the shell through the conductive block, the adjustable capacitor can be connected with different external devices through the connecting terminal, and the use convenience of the adjustable capacitor is improved; by arranging the conductive block and the through hole, the connecting terminal can be inserted between the conductive block and the pressing block through the first conductive sheet to be fixedly connected with the shell, and the working stability of the capacitor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to capacitor technical field especially, it is a kind of adjustable capacitor. BACKGROUND

[0002] Insulated Gate Bipolar Transistor (IGBT), is by bipolar junction transistor (bipolar junction transistor, BJT) and metal oxide semiconductor field effect transistor (Meta l Oxide Semiconductor, MOS) the composite full-control type voltage drive type power semiconductor device, has the advantages of both MOSFET's high input impedance and giant transistor's low on-voltage two aspects.Thin-film capacitor is with metal foil as electrode, it and polyethylene, polypropylene, polystyrene or polycarbonate plastic film, from two ends overlap, winding into the structure of cylindrical capacitor.When needing to adjust IGBT, different capacitors need to be replaced to adapt to different use environment, greatly increase the use cost of capacitor. SUMMARY

[0003] To solve the above problems, the utility model aims at providing a kind of adjustable capacitor, the performance parameter of capacitor is adjusted by using different connecting terminal, the use convenience of capacitor is improved.

[0004] The technical scheme that the utility model solves its problem is as follows:

[0005] A kind of adjustable capacitor, comprising: shell, connecting terminal and multiple capacitor core, the capacitor core and the connecting terminal are all fixed on the shell;The shell is further provided with conductive block and through-hole, one end of the conductive block is connected with the pole end of the capacitor core, the other end of the conductive block extends to the outside of the shell by the through-hole;The side of the through-hole away from the conductive block is provided with pressing block;The connecting terminal is provided with the first conductive sheet matched with the through-hole, the second conductive sheet for connecting external device;The second conductive sheet is inserted between the conductive block and the pressing block and is electrically connected with the capacitor core by the first conductive sheet.

[0006] The adjustable capacitor has at least the following beneficial effects: by arranging the connecting terminal and the capacitor core, the capacitor core extends to the outside of the shell through the conductive block and is connected to the external device through the connecting terminal, different external devices can be connected by adapting connecting terminals of different shapes, frequent replacement of the capacitor body is avoided, and the use convenience of the adjustable capacitor is improved; by arranging the conductive block and the through hole, the connecting terminal can be fixedly connected with the shell by being inserted between the conductive block and the pressing block through the first conductive sheet, and the working stability and service life of the capacitor are improved.

[0007] Further, one side of the shell is provided with an opening, and the conductive block and the capacitor core are fixed in the shell through the opening. By arranging the opening, the capacitor core and the conductive block can be quickly and stably installed and fixed in the shell, and the production efficiency of the adjustable capacitor is improved.

[0008] Further, the through holes are located on the end of the shell away from the opening. This structure ensures that the connecting terminal can be stably and quickly fixed on the through hole, simplifies the structure of the connecting terminal, and improves the integrity of the adjustable capacitor.

[0009] Further, a connecting table is arranged below the through hole, and the pressing block is fixed on the connecting table. By arranging the connecting table, the length of the pressing block is increased, the contact area of the pressing block and the connecting terminal is improved, and the connection stability of the connecting terminal and the shell is ensured.

[0010] Further, the height of the pressing block gradually decreases in the direction away from the capacitor core. This structure ensures that the first conductive sheet can be accurately and stably inserted between the conductive block and the pressing block, avoids damage to the connecting terminal, and improves the use convenience of the adjustable capacitor.

[0011] Further, the first conductive sheet and the second conductive sheet are fixedly connected through a connecting block, and the cross section of the connecting block is L-shaped. By arranging the connecting block, the connection stability between the first conductive sheet and the second conductive sheet is ensured, and the connecting terminal can stably lead the pole end of the capacitor core to the outside of the shell, and the structural stability of the adjustable capacitor is improved.

[0012] Further, the number of the first conductive sheets is consistent with the number of the capacitor cores, and the number of the second conductive sheets is greater than or equal to the number of the first conductive sheets. This structure ensures that the connecting terminal can lead the pole end of the capacitor core to the outside of the shell, and it is convenient for the connecting terminal to adapt different external devices and circuit boards through multiple second conductive sheets, and the compatibility and use convenience of the adjustable capacitor are improved.

[0013] Further, the connecting terminal is fixed on the shell through the first conductive sheet inserted into the through hole, and the second conductive sheets on different connecting terminals are distributed in staggered positions. This structure ensures that the second conductive sheet can be stably mounted on the external device and the circuit board, avoids short circuit connection between different connecting terminals, and improves the working stability of the adjustable capacitor.

[0014] Further, the first conductive sheet, the second conductive sheet and the connecting block are integrally formed from a copper bar. The copper bar is an indispensable conductive material for power distribution installation, and the first conductive sheet, the second conductive sheet and the connecting block are integrally formed from the copper bar, which ensures the conductive performance of the conductive part and reduces the production cost of the adjustable capacitor.

[0015] Further, a plurality of the capacitor cores are fixed in the shell in parallel through the pouring part. By providing the pouring part, the plurality of capacitor cores can be stably fixed in the shell, and the inclination installation of the connecting terminal is avoided, thereby affecting the use convenience of the adjustable capacitor.

[0016] The adjustable capacitor has the following beneficial effects: by providing the connecting terminal and the capacitor core, the capacitor core extends out of the shell through the conductive block and is connected to the external device through the connecting terminal, different external devices can be connected by adapting connecting terminals of different shapes, frequent replacement of the capacitor body is avoided, and the use convenience of the adjustable capacitor is improved; by providing the conductive block and the through hole, the connecting terminal can be fixedly connected with the shell through the first conductive sheet inserted between the conductive block and the pressing block, the working stability and service life of the capacitor are improved; by providing the opening, the capacitor core and the conductive block can be quickly and stably mounted and fixed in the shell, and the production efficiency of the adjustable capacitor is improved; by providing the connecting table, the length of the pressing block is increased, the contact area of the pressing block and the connecting terminal is increased, and the connection stability of the connecting terminal and the shell is ensured; by providing the connecting block, the connection stability between the first conductive sheet and the second conductive sheet is ensured, the connecting terminal can stably connect the pole of the capacitor core to the shell, and the structural stability of the adjustable capacitor is improved.

[0017] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic view of an adjustable capacitor according to an embodiment of the present application;

[0019] Figure 2 FIG. 2 is an exploded view of the adjustable capacitor according to the embodiment of the present application;

[0020] Figure 3 FIG. 3 is a structural schematic view of another adjustable capacitor according to an embodiment of the present application;Figure 2 An enlarged view of the structure of the middle shell;

[0021] Figure 4 Another angle structural schematic view of the adjustable capacitor;

[0022] Figure 5 Another angle exploded view of the adjustable capacitor. DETAILED DESCRIPTION

[0023] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0024] With reference to Figures 1 to 5 The embodiment of the present application provides a kind of adjustable capacitor, comprising: shell 100, connecting terminal 200 and multiple capacitor core 300, capacitor core 300 and connecting terminal 200 are all fixed on shell 100;Shell 100 is also provided with conductive block 110 and through hole 120, one end of conductive block 110 is connected with the pole end of capacitor core 300, another end of conductive block 110 extends to outside shell 100 by through hole 120;Through hole 120 is provided with pressing block 121 away from one side of conductive block 110;Connecting terminal 200 is provided with the first conductive sheet 210 matched with through hole 120, the second conductive sheet 220 for connecting external device;Second conductive sheet 220 is inserted between conductive block 110 and pressing block 121 and is electrically connected with capacitor core 300 by first conductive sheet 210.

[0025] By setting connecting terminal 200 and capacitor core 300, capacitor core 300 extends to outside shell 100 by conductive block 110, and is connected to external device by connecting terminal 200, different external devices can be connected by adapting different shapes of connecting terminal 200, avoid frequent replacement capacitor main body, improve the use convenience of adjustable capacitor;By setting conductive block 110 and through hole 120, connecting terminal 200 can be fixedly connected with shell 100 by inserting first conductive sheet 210 between conductive block 110 and pressing block 121, improve the working stability and service life of capacitor.

[0026] Another embodiment, one side of shell 100 is provided with opening 130, and conductive block 110 and capacitor core 300 are fixed in shell 100 through opening 130. By setting opening 130, capacitor core 300 and conductive block 110 can be quickly and stably installed and fixed in shell 100, improve the production efficiency of adjustable capacitor.

[0027] In another embodiment, the through holes 120 are located on the end of the shell 100 far from the opening 130. This structure ensures that the connecting terminal 200 can be stably and quickly fixed on the through hole 120, simplifies the structure of the connecting terminal 200, and improves the integrity of the adjustable capacitor.

[0028] In another embodiment, a connecting platform 140 is arranged below the through hole 120, and the pressing block 121 is fixed on the connecting platform 140. By arranging the connecting platform 140, the length of the pressing block 121 is increased, the contact area between the pressing block 121 and the connecting terminal 200 is improved, and the connection stability of the connecting terminal 200 and the shell 100 is ensured.

[0029] In another embodiment, the height of the pressing block 121 gradually decreases in the direction away from the capacitor core 300. This structure ensures that the first conductive sheet 210 can be accurately and stably inserted between the conductive block 110 and the pressing block 121, avoids the damage of the connecting terminal 200, and improves the use convenience of the adjustable capacitor.

[0030] In another embodiment, the first conductive sheet 210 and the second conductive sheet 220 are fixedly connected through the connecting block 230, and the cross section of the connecting block 230 is L-shaped. By arranging the connecting block 230, the connection stability between the first conductive sheet 210 and the second conductive sheet 220 is ensured, and the connecting terminal 200 can stably lead the pole end of the capacitor core 300 to the outside of the shell 100, and the structural stability of the adjustable capacitor is improved.

[0031] In another embodiment, the number of the first conductive sheet 210 is consistent with the number of the capacitor core 300, and the number of the second conductive sheet 220 is greater than or equal to the number of the first conductive sheet 210. This structure ensures that the connecting terminal 200 can lead the pole end of the capacitor core 300 to the outside of the shell 100, and it is convenient for the connecting terminal 200 to adapt to different external devices and circuit boards through multiple second conductive sheets 220, and the compatibility and use convenience of the adjustable capacitor are improved.

[0032] In another embodiment, the connecting terminal 200 is inserted into the through hole 120 to be fixed on the shell 100 through the first conductive sheet 210, and the positions of the second conductive sheets 220 on different connecting terminals 200 are staggered. This structure ensures that the second conductive sheet 220 can be stably mounted on the external device and the circuit board, avoids the short circuit connection between different connecting terminals 200, and improves the working stability of the adjustable capacitor.

[0033] In another embodiment, the first conductive sheet 210, the second conductive sheet 220, and the connecting block 230 are integrally formed from copper busbars. Copper busbars are an indispensable conductive material for power distribution installation wires. The integral forming of the first conductive sheet 210, the second conductive sheet 220, and the connecting block 230 from copper busbars ensures the conductivity of the conductive parts and also reduces the production cost of the adjustable capacitor.

[0034] In another embodiment, multiple capacitor cores 300 are fixed parallel to each other within the housing 100 via potting portions 150. By providing potting portions 150, multiple capacitor cores 300 can be stably fixed within the housing 100, avoiding the connection terminals 200 from being installed at an angle, which would affect the ease of use of the adjustable capacitor.

[0035] In the production process of the adjustable capacitor in this embodiment, firstly, according to the specifications of the capacitor core 300, a shell 100 and connecting terminals 200 of corresponding sizes are selected. The shell 100 has openings 130 and through holes 120 on both sides, with a pressure block 121 inside the through hole 120. Next, conductive blocks 110 are installed at the extreme ends of the capacitor core 300, with one end of each conductive block 110 connected to an extreme end of the capacitor core 300, and the other end of the conductive block 110 extending outside the shell 100 through the through hole 120. Then, potting material is introduced into the opening 130, forming a seal between the capacitor core 300 and the shell 100 through potting. Figure 2 and Figure 5 The potting section 150 shown precisely fixes and mounts the capacitor core 300 and the conductive block 110, ensuring the accurate positioning of the conductive block 110 and the capacitor core 300 and improving the production yield of the capacitor. Finally, the first conductive sheet 210 is inserted between the conductive block 110 and the pressure block 121 to ensure that the connection terminal 200 is accurately mounted on the through hole 120. This completes the production of the adjustable capacitor. The entire process is controllable and efficient, ensuring the production efficiency of the adjustable capacitor. During use, it can be flexibly mounted onto an IGBT via the second conductive sheet 220. When the IGBT design changes, only the different connection terminals 200 can be replaced according to the IGBT connection method. This allows the first conductive piece 210 to be inserted between the conductive block 110 and the pressure block 121 and connected to the extreme end of the capacitor core 300. At the same time, the second conductive piece 220 with different designs on the connection terminal 200 can be adapted to different IGBT designs. This avoids frequent replacement of the entire capacitor or capacitor core 300, which would affect the assembly efficiency of the IGBT, improve the compatibility of the adjustable capacitor, and reduce the production cost of the IGBT.

[0036] From the above description, it can be seen that the adjustable capacitor of the utility model can connect different external devices by adapting different shapes of the connecting terminal 200, avoid frequently replacing the capacitor body, and improve the use convenience of the adjustable capacitor; the connecting terminal 200 can be fixedly connected with the shell 100 by being inserted between the conductive block 110 and the pressing block 121 through the first conductive sheet 210, thereby improving the working stability and service life of the capacitor; the opening 130 is arranged, so that the capacitor core 300 and the conductive block 110 can be quickly and stably installed and fixed in the shell 100, thereby improving the production efficiency of the adjustable capacitor; the connecting platform 140 is arranged, thereby increasing the length of the pressing block 121, improving the contact area of the pressing block 121 and the connecting terminal 200, and ensuring the connection stability of the connecting terminal 200 and the shell 100; the connecting block 230 is arranged, thereby ensuring the connection stability between the first conductive sheet 210 and the second conductive sheet 220, and ensuring that the connecting terminal 200 can stably lead the pole end of the capacitor core 300 to the outside of the shell 100, thereby improving the structural stability of the adjustable capacitor.

[0037] The utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. A type of adjustable capacitor, characterized in that, include: The device comprises a housing, connecting terminals, and multiple capacitor cores, all of which are fixed to the housing. The housing also contains a conductive block and a through-hole. One end of the conductive block is connected to the extreme end of each capacitor core, and the other end extends out of the housing through the through-hole. A pressure block is located on the side of the through-hole away from the conductive block. The connecting terminal includes a first conductive piece that mates with the through-hole and a second conductive piece for connecting to external devices. The second conductive piece is inserted between the conductive block and the pressure block through the first conductive piece and is electrically connected to the capacitor core.

2. The adjustable capacitor according to claim 1, characterized in that, An opening is provided on one side of the housing, through which the conductive block and the capacitor core are fixed inside the housing.

3. The adjustable capacitor according to claim 2, characterized in that, All the through holes are located on the outer casing at the end away from the opening.

4. The adjustable capacitor according to claim 1, characterized in that, A connecting platform is provided below the through hole, and the pressure block is fixed on the connecting platform.

5. A regulated capacitor according to claim 4, characterized in that, The height of the pressure block gradually decreases in the direction away from the capacitor core.

6. A regulated capacitor according to claim 1, characterized in that, The first conductive sheet and the second conductive sheet are fixedly connected by a connecting block, the connecting block having an L-shaped cross-section.

7. A regulated capacitor according to claim 6, characterized in that, The number of the first conductive sheets is the same as the number of the capacitor cores, and the number of the second conductive sheets is greater than or equal to the number of the first conductive sheets.

8. A regulated capacitor according to claim 7, characterized in that, The connecting terminal is fixed to the outer casing by inserting the first conductive piece into the through hole, and the second conductive pieces on different connecting terminals are staggered.

9. A regulated capacitor according to claim 6, characterized in that, The first conductive sheet, the second conductive sheet, and the connecting block are integrally formed from copper busbars.

10. A regulated capacitor according to claim 1, characterized in that, Multiple capacitor cores are fixed parallel to each other within the housing via potting sections.

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