Series-parallel connection combined tantalum electrolytic capacitor

Abstract

The invention discloses a series-parallel connection combined tantalum electrolytic capacitor, and belongs to the technical field of electronics, limiting sleeves are distributed on a bottom plate, limiting blocks are installed around the inner rings of the limiting sleeves, capacitors are placed in the limiting sleeves and the limiting blocks, and limiting partition plates are installed at the positive and negative ends of the capacitors. Limiting holes for leading out the positive and negative ends of the capacitor are formed in the limiting partition plates, wire limiting pieces are installed at the corresponding positions of the limiting holes, an assembling cavity is formed in the capacitor containing piece, placing frames are symmetrically installed at the upper end of the assembling cavity, the limiting partition plates are placed and connected through the placing frames, and the capacitor in the cavity is accurately pressed and positioned through the limiting partition plates. The capacitor is ensured to be stable and displacement-free in subsequent assembling and using processes, meanwhile, the influence of contact friction and electric field interference on the service life of wires is effectively reduced, circuit faults caused by early aging of the wires are avoided, and the operation stability and the service life of the whole device are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a tantalum electrolytic capacitor, in particular to a series-parallel combination tantalum electrolytic capacitor, and belongs to the technical field of electronics. BACKGROUND

[0002] At present, none of the tantalum electrolytic capacitors on the market can meet the demand of "200 DEG C high temperature, 1000V rated voltage, 564 mu F capacity".

[0003] When the existing product is connected in series to increase the voltage, the capacity is inversely proportional and attenuated in series, so high-capacity products need to be connected in parallel to compensate for the high capacity of 564 mu F.

[0004] The prior art such as application No. 201911100965.7 discloses a combination capacitor, which comprises a busbar and a capacitor body composed of capacitor cores, wherein the capacitor body is at least two, and each positive electrode lead-out end of the capacitor body is connected with one busbar, and the negative electrode lead-out ends of all the capacitor bodies are connected with the same busbar. The capacitor connecting structure in the prior art is relatively complicated, the line and the capacitor are assembled together, which can cause high temperature, and the connected line is not fixed, which can cause internal disorder.

[0005] In order to overcome the above-mentioned problems of "the capacitor connecting structure in the prior art is relatively complicated, the line and the capacitor are assembled together, which can cause high temperature, and the connected line is not fixed, which can cause internal disorder", a series-parallel combination tantalum electrolytic capacitor is needed to optimize the above-mentioned shortcomings. SUMMARY

[0006] The main purpose of the present application is to overcome the above-mentioned problems of "the capacitor connecting structure in the prior art is relatively complicated, the line and the capacitor are assembled together, which can cause high temperature, and the connected line is not fixed, which can cause internal disorder", and to provide a series-parallel combination tantalum electrolytic capacitor to achieve the following functions: The capacitors are placed one by one in the assembly cavities of the capacitor receiving member, and after the capacitors are placed in place, the capacitors in the cavities are precisely pressed and positioned by the limiting partition plate, so as to ensure that the capacitors are stable and have no displacement during subsequent assembly and use.

[0007] Then, according to the actual circuit design requirements, at least two groups of capacitors are connected in series and parallel by wires, and the capacitor receiving member can realize physical separation of the capacitor body and the connecting wire by means of the isolation structure of the limiting partition plate, so as to achieve reliable electrical separation effect; The electrically isolated design of the application eliminates the problems of wire wear and insulation layer damage caused by direct contact between the wire and the capacitor body from the root cause by physically isolating them. At the same time, this isolation design can reduce the interference of contact friction and capacitor electric field on the wire, reduce the aging rate of the wire, and avoid circuit failure caused by premature aging of the wire. The above effects can be directly derived from the structural isolation design feature, and through comparative test verification, the wire wear degree, aging rate and circuit failure rate of the design are significantly lower than those of the traditional contact design, which can effectively improve the operation stability and service life of the overall device. In addition, the connecting wires can be fixed one by one through the wire limiting pieces on the limiting partition plates, realizing the standardized arrangement of the wire layout.

[0008] This design completely solves the problems of messy winding and disordered arrangement of wires in traditional assembly, greatly reduces the difficulty of wire arrangement during early assembly, and is convenient for later equipment maintenance, fault diagnosis and component replacement, improves the overall assembly efficiency and operation convenience, and ensures the maintainability of the device after long-term operation.

[0009] After completing the basic assembly of the capacitor and the wire, the limiting partition plate is placed one by one into the limiting sleeve, and is fixed by the limiting block of the limiting sleeve, so as to ensure that the limiting partition plate does not move after installation, and to provide stable support for the subsequent capacitor limiting.

[0010] After the capacitor is fixed by the method described above, the limiting partition plate with the assembled capacitor is placed on the placing rack of the storage part. Through the layered installation structure, independent partition limiting of multiple capacitors can be realized, effectively avoiding mutual extrusion and position deviation between the capacitors, and ensuring the assembly precision. At the same time, in this structure design, the placing rack region forms a through channel with the internal cavity of the capacitor storage part through the heat dissipation port. The heat dissipation port is located at the symmetrical two ends of the capacitor storage part, and the size of the heat dissipation port is "1.0mm to 6.0mm". The size of the heat dissipation port is set according to the diameter of the capacitor. The distribution of the heat dissipation port is at least two groups vertically and at least one group horizontally, which forms an efficient heat dissipation circuit. During the operation of the device, the heat generated by the capacitor will naturally rise, and the through heat dissipation channel can accelerate air circulation and quickly discharge heat outside the storage part, significantly improving the heat dissipation efficiency. In addition, the capacitors are installed in an independent and separate layout, and are placed independently in parallel or series through the wires, which completely solves the problem of heat concentration caused by traditional integrated installation, avoids the influence of local high temperature on the performance and service life of the capacitor, and further ensures the long-term stable operation of the overall device.

[0011] The application realizes one-to-one fixing structure of the capacitor, and the capacitor and the wire are separated by the partition plate and fixed by the bundle structure, so as to avoid the scattered winding of the wire and realize the function of separate heat dissipation, and a plurality of capacitors are connected in parallel or series to improve the distribution, and the total capacity after parallel connection is equal to the sum of the capacities of the capacitors, when a single large-capacity capacitor cannot meet the requirement, or the volume of the single large-capacity capacitor is too large and the price is too high, the parallel connection of a plurality of small capacitors can be used to realize the large-capacity capacitor, the parallel connection of the plurality of capacitors can disperse the current, reduce the ripple current burden of the single capacitor, reduce the heat generation, and prolong the service life, at the same time, if one of the capacitors fails, the other capacitors can still work, and the risk of complete circuit failure is reduced. In the power supply circuit, a large-capacity electrolytic capacitor and a small-capacity ceramic capacitor are often connected in parallel, the large capacitor is responsible for filtering low-frequency ripples, and the small capacitor is responsible for filtering high-frequency noise due to its excellent high-frequency characteristics, so as to realize good filtering in the whole frequency band and make the power supply output more pure.

[0012] The object of the application can be achieved by adopting the following technical scheme: A series-parallel combined tantalum electrolytic capacitor, comprising a capacitor receiving part for limiting, and a bottom plate covering the bottom of the capacitor receiving part; A limiting sleeve is distributed on the bottom plate, an inner ring of the limiting sleeve surrounds a limiting block, and the limiting sleeve and the limiting block are internally placed with a capacitor; A limiting partition plate is installed on the positive and negative poles of the capacitor, limiting holes leading out the positive and negative poles of the capacitor are formed in the limiting partition plate, and a wire limiting part is installed at the corresponding position of the limiting hole.

[0013] Preferably, an assembly cavity is formed in the capacitor receiving part, a placing rack is symmetrically installed at the upper end of the assembly cavity, and the limiting partition plate is placed and connected by the placing rack.

[0014] Preferably, the wire connected to the capacitor is fixedly connected by the wire limiting part and a screw.

[0015] Preferably, an enclosing plate covers the top of the capacitor receiving part, and the enclosing plate is fixedly connected with the capacitor receiving part by a fixing screw.

[0016] Preferably, the outer ends of the capacitor receiving part are respectively provided with a coupling part one and a coupling part two connected in series and parallel with at least two groups of capacitors.

[0017] Preferably, a connecting plate is installed at the outer lower section of the capacitor receiving part.

[0018] Preferably, the wire limiting part is fixedly connected with the limiting partition plate by a screw.

[0019] Preferably, the limiting partition plate is press-connected by the enclosing plate.

[0020] Preferably, the capacitor receiving member is symmetrically provided with a heat dissipation opening, and the heat dissipation opening is in communication with the capacitor receiving member.

[0021] The beneficial technical effects of the present application are as follows: The present application provides a series-parallel combination tantalum electrolytic capacitor, which is placed in the pre-set assembly cavity of the capacitor receiving member one by one, and after the capacitor is placed in position, the capacitor in the cavity is precisely pressed and positioned by the limiting partition plate, so as to ensure the stability of the capacitor during subsequent assembly and use.

[0022] Subsequently, according to the actual circuit design requirements, at least two groups of capacitors are connected in series and parallel by wires, and the capacitor receiving member can realize physical separation of the capacitor body and the connecting wire by means of the isolation structure of the limiting partition plate, thereby achieving reliable electrical separation effect; The electrical separation design of the present application forms physical isolation between the wire and the capacitor body, which eliminates the problems of wire wear and tear and insulation layer damage caused by direct contact between the two from the root cause. At the same time, the isolation design can reduce contact friction and the interference of the capacitor electric field on the wire, reduce the aging rate of the wire, and avoid circuit failure caused by premature aging of the wire. The above effects can be directly deduced by the design features of structural isolation, and through comparative test verification, the wire wear and tear degree, aging rate and circuit failure rate of the present design are significantly lower than those of the traditional contact type design, which can effectively improve the operation stability and service life of the overall device. In addition, the connecting wire can be fixed one by one by the wire limiting piece on the limiting partition plate, realizing the standardization of wire layout.

[0023] This design completely solves the problems of messy and disordered wire arrangement in traditional assembly, not only greatly reduces the difficulty of wire arrangement during early assembly, but also facilitates later equipment maintenance, fault troubleshooting and component replacement, improves overall assembly efficiency and operation convenience, and ensures the maintainability of the device after long-term operation.

[0024] After completing the basic assembly of the capacitor and the wire, the limiting partition plate is placed one by one in the limiting sleeve, and the limiting block of the limiting sleeve is used for precise clamping and fixing, so as to ensure that the limiting partition plate does not loosen or deviate after installation, and to provide stable support for subsequent capacitor limiting.

[0025] After the capacitor is fixed by the method described above, the limiting partition plate with the assembled capacitor is placed on the placing rack of the receiving member, and through the layered installation structure, independent partition limiting of multiple groups of capacitors can be realized, effectively avoiding mutual extrusion and position deviation between the groups of capacitors, and ensuring assembly accuracy. Meanwhile, in the structural design, the placing rack region forms a through channel with the internal cavity of the capacitor storage member through the heat dissipation openings, the heat dissipation openings are located at the two symmetrical ends of the capacitor storage member, the size of the heat dissipation openings is 1.0 mm to 6.0 mm, the size of the heat dissipation openings is set according to the diameter of the capacitor, the heat dissipation openings are distributed in at least two groups in the vertical direction and at least one group in the horizontal direction, and the high-efficiency heat dissipation loop is constructed. During the operation of the device, the heat generated by the capacitor rises naturally, the through heat dissipation channel can accelerate air circulation, quickly discharge the heat outside the storage member, and significantly improve the heat dissipation efficiency. In addition, the capacitors are independently arranged, and the heat concentration problem caused by the traditional integrated installation is completely solved through independent placement and parallel or series connection of the wires, so that the influence of the local high temperature on the performance and service life of the capacitor is avoided, and the long-term stable operation of the overall device is further ensured.

[0026] The application realizes one-to-one fixing structure of the capacitor, and the capacitor and the wire are separated and fixed through the beam structure through the partition plate, which avoids the scattered winding of the wire and can separate and dissipate heat. In addition, a plurality of capacitors are connected in parallel or series to improve the distribution, and the total capacity after parallel connection is equal to the sum of the capacities of the capacitors. When a large-capacity capacitor is needed and a single capacitor cannot meet the requirement, or the volume of a single large-capacity capacitor is too large and the price is too high, a plurality of small capacitors can be connected in parallel to achieve the requirement. The parallel connection of the plurality of capacitors can disperse the current, reduce the ripple current burden of a single capacitor, reduce heat generation, and prolong the service life. At the same time, if one of the capacitors fails, the other capacitors can still work, reducing the risk of complete circuit failure. In the power supply circuit, a large-capacity electrolytic capacitor and a small-capacity ceramic capacitor are often connected in parallel. The large capacitor is responsible for filtering low-frequency ripples, and the small capacitor is responsible for filtering high-frequency noise due to its excellent high-frequency characteristics, thereby achieving good filtering in the full frequency band and making the power output more pure. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a preferred embodiment of the device according to the application. The overall three-dimensional structure is exploded and schematically shown. Figure 2 It is a preferred embodiment of the device according to the application. The side view is shown. Figure 3 It is a preferred embodiment of the device according to the application. The partial top view is shown. Figure 4 It is a preferred embodiment of the device according to the application. The wire fixing structure is schematically shown. Figure 5 It is a preferred embodiment of the device according to the application. The internal top view is shown. Figure 6A schematic diagram of the internal structure of a preferred embodiment of a series-parallel combined tantalum electrolytic capacitor according to the present application; Figure 7 A schematic diagram of the base structure of a preferred embodiment of a series-parallel combined tantalum electrolytic capacitor according to the present application; Figure 8 A schematic diagram of the two-group capacitor series circuit of a preferred embodiment of a series-parallel combined tantalum electrolytic capacitor according to the present application; Figure 9 A schematic diagram of the two-group capacitor parallel circuit of a preferred embodiment of a series-parallel combined tantalum electrolytic capacitor according to the present application.

[0028] In the figure: 1, capacitor receiving member; 101, connecting plate; 102, coupling member one; 103, coupling member two; 104, assembly cavity; 105, heat dissipation opening; 106, placement rack; 107, bottom plate; 2, capacitor; 3, limiting partition; 301, limiting hole; 302, wire limiting member; 4, sealing plate; 401, fixing screw; 5, limiting sleeve; 501, limiting block. DETAILED DESCRIPTION

[0029] In order to make the technical solution of the present application more clear and explicit to those skilled in the art, the present application will be described in further detail below in combination with embodiments and drawings, but the embodiments of the present application are not limited thereto.

[0030] Embodiment 1

[0031] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , and Figure 9 indicated, the series-parallel combined tantalum electrolytic capacitor provided in the present embodiment includes a capacitor receiving member 1 for limiting, the bottom of the capacitor receiving member 1 is covered with a bottom plate 107; The positive and negative poles of the capacitor 2 are provided with a limiting partition 3, the limiting partition 3 is provided with limiting holes 301 leading out the positive and negative poles of the capacitor 2, and the corresponding positions of the limiting holes 301 are provided with wire limiting members 302.

[0032] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 ,Figure 8 And Figure 9 As shown in

[0033] Subsequently, according to the actual circuit design requirements, at least two groups of capacitors 2 are connected in series and parallel by wires, and the capacitor receiving part 1 can realize physical separation of the capacitor body and the connecting wire by means of the isolation structure of the limiting partition plate 3, thereby achieving reliable electrical separation effect; This electrical separation design can avoid the problems of wire wear and tear and insulation layer damage caused by direct contact between the wire and the capacitor body, effectively reduce the influence of contact friction and electric field interference on the service life of the wire, avoid circuit failure caused by premature aging of the wire, and significantly improve the operation stability and service life of the overall device; In addition, the connecting wire can be fixed one by one through the wire limiting part 302 on the limiting partition plate 3 to realize the standardization of wire layout.

[0034] This design completely solves the problems of messy and tangled wires and disordered arrangement in traditional assembly, not only greatly reduces the difficulty of wire arrangement in the early assembly, but also facilitates equipment maintenance, fault diagnosis and component replacement in the later period, improves the overall assembly efficiency and operation convenience, and ensures the maintainability of the device after long-term operation.

[0035] Embodiment 2

[0036] The scheme in embodiment 1 will be further introduced in combination with specific working modes, as described below: As shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 And Figure 9 As a preferred embodiment, on the basis of the above mode, further, the bottom plate 107 is distributed with a limiting sleeve 5, the inner circle of the limiting sleeve 5 is surrounded by a limiting block 501, and the limiting sleeve 5 and the limiting block 501 are placed with capacitors 2. The capacitor receiving part 1 is provided with an assembly cavity 104, the upper end of the assembly cavity 104 is symmetrically provided with a placing rack 106, and the limiting partition plate 3 is placed and connected by the placing rack 106.

[0037] The wire connected to the capacitor 2 is fixedly connected by the wire limiting part 302 and the screw.

[0038] The top of the capacitor storage component 1 is covered with a sealing plate 4, which is fixedly connected to the capacitor storage component 1 by a fixing screw 401.

[0039] The outer end of the capacitor storage component 1 is respectively equipped with a connector 102 and a connector 103 that are connected in series and parallel with at least two sets of capacitors 2.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, after the basic assembly of capacitor 2 and wires is completed, the limiting partitions 3 are placed into the limiting sleeves 5 one by one. The limiting blocks 501 on the limiting sleeves 5 are used to achieve precise locking and fixing (the limiting blocks 501 are elastic structures, and after the capacitor 2 is placed into the limiting sleeves 5, they are elastically squeezed by the limiting blocks 501, and it is a one-to-one placement limiting structure). The limiting partitions 3 are placed on the placement frame 106 and then fixed with screws, which effectively ensures that the limiting partitions 3 do not loosen or shift after installation, and provides stable support for the subsequent capacitor limiting.

[0041] After the capacitor 2 is fixed in the manner described above, the limiting partition 3 with the assembled capacitor 2 is placed on the placement rack 106 of the storage component 1. Through this layered installation structure, the independent partitioning and limiting of multiple sets of capacitors 2 can be realized, effectively avoiding mutual squeezing and positional displacement between the sets of capacitors, and ensuring assembly accuracy. Meanwhile, in this structural design, the placement rack 106 area forms a through channel with the internal cavity of the capacitor storage component 1 through the heat dissipation vent, creating an efficient heat dissipation circuit. During the operation of the device, the heat generated by the capacitor 2 will naturally rise. With the help of the through heat dissipation channel, air circulation can be accelerated, and the heat can be quickly discharged to the outside of the storage component, significantly improving the heat dissipation efficiency. In addition, the capacitor 2 adopts an independent and separate installation layout, which completely solves the problem of heat concentration caused by traditional integrated installation, avoids the impact of excessive local temperature on the performance and service life of the capacitor, and further ensures the long-term stable operation of the overall device.

[0042] The application realizes one-to-one fixing structure of the capacitor, and the capacitor and the wire are separated by the partition plate and fixed through the beam structure, which avoids the scattered winding of the wire and can realize the function of separate heat dissipation, and a plurality of capacitors are connected in parallel or series to improve the distribution, and the total capacity after parallel connection is equal to the sum of the capacities of the capacitors, when a single large-capacity capacitor cannot meet the requirement, or the volume of the single large-capacity capacitor is too large and the price is too high, a plurality of small capacitors can be connected in parallel to realize the large-capacity capacitor, the plurality of capacitors connected in parallel can disperse the current, reduce the ripple current burden of the single capacitor, reduce the heat generation, prolong the service life, at the same time, if one of the capacitors fails, the other capacitors can still work, which reduces the risk of complete circuit failure. In the power supply circuit, a large-capacity electrolytic capacitor and a small-capacity ceramic capacitor are often connected in parallel, the large-capacity capacitor is responsible for filtering low-frequency ripple, and the small-capacity capacitor is responsible for filtering high-frequency noise due to its excellent high-frequency characteristics, so as to realize good filtering in the whole frequency band, and make the power output more pure.

[0043] The above is only further embodiments of the application, but the protection scope of the application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and concept of the application within the scope disclosed by the application, which belongs to the protection scope of the application.

Claims

1. A series-parallel combined tantalum electrolytic capacitor, comprising a capacitor housing (1) for limiting position, the bottom of the capacitor housing (1) being covered by a base plate (107). Its features are: The base plate (107) is distributed with limiting sleeves (5), and the inner ring of the limiting sleeves (5) is surrounded by limiting blocks (501). Capacitors (2) are placed inside the limiting sleeves (5) and the limiting blocks (501). Limiting partitions (3) are installed on the positive and negative terminals of the capacitor (2). Limiting holes (301) are provided on the limiting partitions (3) to guide the positive and negative terminals of the capacitor (2). A wire limiting component (302) is installed at the corresponding position of the limiting hole (301).

2. The series-parallel combined tantalum electrolytic capacitor according to claim 1, characterized in that: The capacitor storage component (1) has an assembly cavity (104) inside. A placement rack (106) is symmetrically installed on the upper end of the assembly cavity (104). The limiting partition (3) is placed and connected by the placement rack (106).

3. A series-parallel combined tantalum electrolytic capacitor according to claim 1, characterized in that: The wires connected to the capacitor (2) are fixedly connected by wire limiting member (302) and screws.

4. A series-parallel combined tantalum electrolytic capacitor according to claim 3, characterized in that: The top of the capacitor storage component (1) is covered with a sealing plate (4), which is fixedly connected to the capacitor storage component (1) by a fixing screw (401).

5. A series-parallel combined tantalum electrolytic capacitor according to claim 1, characterized in that: The outer end of the capacitor storage component (1) is respectively equipped with a connector one (102) and a connector two (103) that are connected in series and parallel with at least two sets of capacitors (2).

6. A series-parallel combined tantalum electrolytic capacitor according to claim 5, characterized in that: A connecting plate (101) is installed on the lower outer section of the capacitor storage component (1).

7. A series-parallel combined tantalum electrolytic capacitor according to claim 4, characterized in that: The wire limiting component (302) is fixedly connected to the limiting partition (3) with screws.

8. A series-parallel combined tantalum electrolytic capacitor according to claim 7, characterized in that: The limiting partition (3) is pressed and connected by the sealing plate (4).

9. A series-parallel combined tantalum electrolytic capacitor according to claim 8, characterized in that: The capacitor storage component (1) is provided with symmetrical heat dissipation vents (105), and the heat dissipation vents (105) are connected to the capacitor storage component (1).

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