A combined tantalum capacitor

Abstract

The utility model discloses a combined tantalum capacitor, including shell casing, install multiple single body capacitor in shell casing, still be equipped with positive pole copper sheet and negative pole copper sheet in shell casing, the positive pole of single body capacitor is connected with positive pole copper sheet, the negative pole of single body capacitor is connected with negative pole copper sheet, the positive pole copper sheet is connected with the positive pole lead -out post, the negative pole copper sheet is connected with the negative pole lead -out post, and the opening end of shell casing is equipped with shell cover plate, and one end of positive pole lead -out post and negative pole lead -out post respectively passes shell cover plate and places in shell casing outside, make the whole combined capacitor whole capacity become big, can also guarantee the independent connection of every single body capacitor simultaneously, and the internal structure of combined capacitor is more stable, and the installation reliability is strong, and the line is stable, and the installation operation is simple and easy.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, and in particular to a combined tantalum capacitor. Background Technology

[0002] Today, various electronic devices and equipment are widely used in all aspects of people's daily lives and work. These devices require a large number of electronic components, and capacitors are a common type of electronic component. With the development and deepening of modern industry, the requirements for the voltage withstand capability and capacitance of non-solid electrolyte tantalum capacitors are becoming increasingly stringent, mainly moving towards miniaturization, lightweighting, high voltage, and large capacitance. This poses a greater challenge to the technological breakthrough of tantalum capacitors. Combined non-solid electrolyte tantalum capacitors are widely used in various civilian and military electronic products due to their many excellent properties, such as small size, high voltage, large capacitance, low leakage current, low loss (low ESR), long life, good storage stability, excellent frequency characteristics, and ability to withstand large ripple currents.

[0003] Existing technology, Chinese patent document CN104916442A, discloses a combined high-energy composite tantalum capacitor and its manufacturing method. The capacitor includes: each tantalum capacitor has an insulating layer on its surface and top end; the tantalum capacitors are electrically connected by wires to form a series or parallel structure and are housed within a metal casing; a positive lead is connected to the positive terminal of each connected tantalum capacitor; a negative lead is connected to the negative terminal of each connected tantalum capacitor; a thermally conductive silicone encapsulator is encapsulated within the metal casing to fix each tantalum capacitor and its connecting wires; a top cover seals the opening of the metal casing, sealing the thermally conductive silicone encapsulator, each tantalum capacitor, and their connecting wires within the metal casing; the positive and negative leads pass through the thermally conductive silicone encapsulator and pre-drilled holes in the metal casing to extend to the outside of the metal casing. This capacitor has higher reliability, better thermal stability, lower leakage current, wider temperature range, and increases capacitance by 30% or voltage by 20% for the same package size, and can withstand discontinuous 3V reverse voltage.

[0004] According to the aforementioned patent, using wires to install multiple capacitors can lead to messy wiring connections as the number of capacitors increases, and can also cause instability in the installation wiring. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides a combined tantalum capacitor.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides a combined tantalum capacitor, including a housing, inside which multiple individual capacitors are installed. The housing also contains a positive copper plate and a negative copper plate. The positive terminal of each individual capacitor is connected to the positive copper plate, and the negative terminal of each individual capacitor is connected to the negative copper plate. The positive copper plate is connected to a positive lead-out post, and the negative copper plate is connected to a negative lead-out post. The open end of the housing is provided with a housing cover plate, and one end of each of the positive and negative lead-out posts passes through the housing cover plate and is placed outside the housing.

[0008] Preferably, a first connecting plate is fixedly connected to the bottom of the positive electrode lead-out post, and the positive electrode lead-out post is connected to the positive electrode copper plate through the first connecting plate.

[0009] Preferably, a second connecting plate is fixedly connected to the bottom of the negative electrode lead-out post, and the negative electrode lead-out post is connected to the negative electrode copper plate through the second connecting plate.

[0010] Preferably, the positive copper plate and the negative copper plate are located on both sides of the positive and negative electrodes of the individual capacitors, respectively. The positive copper plate has multiple positive connection slots, and the positive terminals of the multiple individual capacitors are connected to the multiple positive connection slots. The negative copper plate has multiple negative connection slots, and the negative terminals of the multiple individual capacitors are connected to the multiple negative connection slots.

[0011] Preferably, the length of the positive electrode lead-out post is greater than the length of the negative electrode lead-out post.

[0012] Preferably, the positive electrode lead-out post has a positive electrode mounting groove at one end extending outside the outer casing, and the negative electrode lead-out post has a negative electrode mounting groove at one end extending outside the outer casing.

[0013] Preferably, the interior of the outer casing is filled with an epoxy resin layer.

[0014] Preferably, the positive electrode lead-out post has a first notch at one end near its bottom.

[0015] Preferably, the negative electrode lead-out post has a second notch at one end near its bottom.

[0016] Preferably, pins are mounted on the outer side wall of the housing.

[0017] The beneficial effects of this utility model are as follows: by using positive and negative copper plates to install and connect multiple capacitors respectively, the overall capacity of the combined capacitor is increased, while ensuring the independent connection of each individual capacitor. The circuit installation is simple, the internal structure of the combined capacitor is more stable, the installation reliability is strong, the circuit is stable, and the installation operation is simple and easy. Attached Figure Description

[0018] Figure 1 This is an exploded view of the structure of this utility model; Figure 2 This is a partial structural schematic diagram of the positive electrode copper plate, positive electrode lead-out post, etc., which is mainly used to show the structure of this utility model; Figure 3 This is a partial structural diagram of the present invention, mainly used to show the negative electrode copper plate, negative electrode lead-out post, and other structures. Figure 4 This is a schematic diagram of the packaged structure of this utility model; Figure 5 This is a top view of the packaged utility model; In the diagram: 1-Outer shell cover; 11-Preset through hole; 12-Perforation; 2-Positive lead-out post; 21-Positive mounting slot; 22-Positive copper plate; 222-Positive connection slot; 3-Negative lead-out post; 31-Negative mounting slot; 32-Negative copper plate; 322-Negative connection slot; 4-Pin; 41-Mounting hole; 5-Outer shell; 51-Threaded hole; 6-Single capacitor; 7-First connecting plate; 8-Second connecting plate; 9-First notch; 10-Second notch. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] In this embodiment, refer to Figure 1 and Figure 4 The device includes an outer shell 5, which is box-shaped. The outer shell 5 has an outer shell cover 1 at its open end. The outer shell cover 1 is made of aluminum alloy. The outer shell 5 has multiple threaded holes 51 along the edge of the open end. The outer shell cover 1 has multiple through holes 12. Screws are passed through the through holes 12 and threadedly connected to the threaded holes 51 to achieve the encapsulation of the outer shell 5 and the outer shell cover 1.

[0022] In this embodiment, refer to Figure 1 and Figure 5The outer shell 5 has pins 4 fixedly installed on both opposite sides. The pins 4 are made of aluminum alloy, are rectangular, and are 5mm thick. Both pins 4 have multiple mounting holes 41 to achieve stable installation of the combined capacitor. The pins 4 have a large contact area with the printed circuit board, resulting in high installation reliability and suitability for installation in various environments.

[0023] In this embodiment, refer to Figure 1 Multiple individual capacitors 6 are installed inside the outer casing 5. Each individual capacitor 6 is a CAK90 type 100V 800μF capacitor, and the multiple individual capacitors 6 are arranged in an array. The outer casing 5 also contains a positive copper plate 22 and a negative copper plate 32. The individual capacitors 6 are located between the positive copper plate 22 and the negative copper plate 32. The positive terminal of the individual capacitor 6 is opposite to the plate surface of the positive copper plate 22, and the negative terminal of the individual capacitor 6 is opposite to the plate surface of the negative copper plate 32. The positive copper plate 22 is provided with multiple positive connection slots 222, and the negative copper plate 32 is provided with multiple negative connection slots 322. The multiple positive connection slots 222 are arranged in an array, and the multiple negative connection slots 322 are also arranged in an array. The positive terminals of multiple individual capacitors 6 are respectively inserted into the multiple positive connection slots 222 to realize the connection between the positive terminal of the individual capacitor 6 and the positive copper plate 22. The multiple individual capacitors 6 are respectively inserted into the multiple negative connection slots 322 to realize the connection between the negative terminal of the multiple individual capacitors 6 and the negative copper plate 32.

[0024] By assembling and connecting the positive and negative electrodes of the individual capacitors 6 with the positive and negative electrodes of the copper plate 22 and the negative electrode 32 respectively, multiple individual capacitors 6 are arranged and distributed inside the outer shell 5, making full use of the space of the outer shell 5, forming a large-capacity combined capacitor in the limited space of the outer shell 5, while ensuring the connection stability of multiple individual capacitors 6 and enhancing vibration resistance.

[0025] In this embodiment, refer to Figure 1 , Figure 2 and Figure 3 The positive electrode copper plate 22 is connected to a positive electrode lead post 2, which is cylindrical. A first connecting plate 7 is welded to the bottom of the positive electrode lead post 2, and the positive electrode lead post 2 is fixedly connected to the positive electrode copper plate 22 through the first connecting plate 7. The negative electrode copper plate 32 is connected to a negative electrode lead post 3, which is cylindrical. A second connecting plate 8 is welded to the bottom of the negative electrode lead post 3, and the negative electrode lead post 3 is fixedly connected to the negative electrode copper plate 32 through the second connecting plate 8. Two preset through holes 11 are provided on the outer casing cover plate 1. One end of the positive electrode lead post 2 and the negative electrode lead post 3 respectively passes through the two preset through holes 11 and is placed outside the outer casing 5.

[0026] This ensures a good connection between the positive and negative terminals of multiple individual capacitors 6 and the positive lead-out post 2 and the negative lead-out post 3, respectively, to enhance the overall connectivity of the structure and minimize the occurrence of poor circuit contact.

[0027] To further strengthen the connection between the positive electrode lead-out post 2 and the negative electrode lead-out post 3 and the printed circuit board, in this embodiment, referring to... Figure 1 and Figure 4 The positive lead post 2 has a positive mounting groove 21 at one end extending out of the outer casing 5, and the negative lead post 3 has a negative mounting groove 31 at one end extending out of the outer casing 5. The positive mounting groove 21 is threadedly connected to the printed circuit board by screws, and the negative mounting groove 31 is also threadedly connected to the printed circuit board by screws. This strengthens the connection stability between the combined capacitor and the printed circuit board, making the structure vibration resistant and preventing poor contact at the connection point.

[0028] In this embodiment, refer to Figure 1 and Figure 4 The length of the positive electrode lead-out post 2 is greater than the length of the negative electrode lead-out post 3, so as to distinguish between the positive and negative electrodes.

[0029] In this embodiment, refer to Figure 2 and Figure 3 The positive electrode lead-out post 2 has a first notch 9 near its bottom end, and the negative electrode lead-out post 3 has a second notch 10 near its bottom end. The outer casing 5 is filled with an epoxy resin layer to further strengthen the stable installation of the positive electrode lead-out post 2 and the negative electrode lead-out post 3.

[0030] The working principle of this utility model is as follows: Multiple individual capacitors 6 are arranged in parallel, and the positive and negative terminals of the individual capacitors 6 are connected by a positive copper plate 22 and a negative copper plate 32, respectively. The positive and negative terminals of the combined capacitor are then connected by the positive copper plate 22 to the positive lead-out post 2 and the negative copper plate 32 to the negative lead-out post 3, thereby realizing the lead-out of the positive and negative terminals of the combined capacitor and realizing the layout and installation of the overall structure. This combined capacitor has the characteristics of large capacity, strong vibration resistance, and stable structural connection, which is suitable for market demand.

[0031] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A combined tantalum capacitor, characterized in that: The device includes an outer casing (5), which contains multiple individual capacitors (6). The outer casing (5) also contains a positive copper plate (22) and a negative copper plate (32). The positive terminal of the individual capacitor (6) is connected to the positive copper plate (22), and the negative terminal of the individual capacitor (6) is connected to the negative copper plate (32). The positive copper plate (22) is connected to a positive lead post (2), and the negative copper plate (32) is connected to a negative lead post (3). The opening end of the outer casing (5) is provided with an outer casing cover plate (1). One end of the positive lead post (2) and the negative lead post (3) pass through the outer casing cover plate (1) and are placed outside the outer casing (5).

2. The combined tantalum capacitor as described in claim 1, characterized in that: The bottom of the positive lead-out post (2) is fixedly connected to a first connecting plate (7), and the positive lead-out post (2) is connected to the positive copper plate (22) through the first connecting plate (7).

3. The combined tantalum capacitor as described in claim 1, characterized in that: The bottom of the negative lead-out post (3) is fixedly connected to a second connecting plate (8), and the negative lead-out post (3) is connected to the negative copper plate (32) through the second connecting plate (8).

4. The combined tantalum capacitor as described in claim 1, characterized in that: The positive copper plate (22) and the negative copper plate (32) are located on the positive and negative sides of the single capacitor (6), respectively. The positive copper plate (22) has multiple positive connection slots (222), and the positive terminals of the multiple single capacitors (6) are connected to the multiple positive connection slots (222). The negative copper plate (32) has multiple negative connection slots (322), and the negative terminals of the multiple single capacitors (6) are connected to the multiple negative connection slots (322).

5. The combined tantalum capacitor as described in claim 1, characterized in that: The length of the positive electrode lead-out post (2) is greater than the length of the negative electrode lead-out post (3).

6. The combined tantalum capacitor as described in claim 1, characterized in that: The positive lead-out post (2) has a positive electrode mounting groove (21) at one end extending out of the outer shell (5), and the negative lead-out post (3) has a negative electrode mounting groove (31) at one end extending out of the outer shell (5).

7. The combined tantalum capacitor as described in claim 1, characterized in that: The outer shell (5) is filled with an epoxy resin layer.

8. The combined tantalum capacitor as described in claim 7, characterized in that: The positive lead-out post (2) has a first notch (9) at one end near its bottom.

9. The combined tantalum capacitor as described in claim 7, characterized in that: The negative electrode lead-out post (3) has a second notch (10) at one end near its bottom.

10. The combined tantalum capacitor as described in claim 1, characterized in that: Pins (4) are mounted on the outer side wall of the outer casing (5).

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