A bipolar electrolytic capacitor with modular design

Abstract

The present invention relates to the technical field of energy storage devices, and specifically discloses a bipolar electrolytic capacitor with a modular design, which includes a housing, which includes a shell and a cover connected to the top of the shell, and a wiring electrode is installed on the cover; a plurality of capacitor units arranged in the shell, which include a core body and pins connected to both sides of the core body, and a plurality of pins on the same side are connected through a busbar; and an isolation frame for installing and isolating adjacent capacitor units, which includes a bracket for supporting the core body and connecting sleeves connected to both sides of the bracket, and the end of the connecting sleeve away from the bracket is connected to a positioning frame; In the present invention, a modular design concept is adopted. The capacitor stores charge through the formation of electrolyte and oxide film inside. Multiple capacitor units are combined together to form a larger capacitor module to meet higher capacitance requirements, improve the flexibility and scalability of the capacitor, and enable the capacitor to better adapt to different application scenarios.

Description

Technical Field

[0001] The invention relates to the technical field of energy storage devices, in particular to a bipolar electrolytic capacitor with a modular design. Background Art

[0002] With the rapid advancement of clean energy technology and the booming expansion of the portable electronics market, the demand for high-performance capacitors continues to grow. Although traditional single bipolar electrolytic capacitors have played a certain role in the past, they are limited by their inherent material properties and technical bottlenecks. In terms of energy density and power density, the two key performance indicators, they can no longer fully meet the urgent needs of today's society for efficient and compact energy storage solutions. Furthermore, relying on a single large-capacity capacitor as a means of energy storage not only faces the challenge of high manufacturing costs, but also exposes the defect of easily forming a concentrated point of failure in practical applications. This design limitation often causes a small fault point to affect the entire system, posing a serious threat to the stability and reliability of the entire system, and reducing the overall efficiency and service life of the system.

[0003] There are many improvement measures for improving the performance of capacitors in the current market, but most of them only touch the surface, such as the strategy of forming a capacitor array by connecting multiple small capacitors in parallel or in series, in order to increase the total storage capacity and output power by superimposing the number while maintaining a certain volume. For example, the capacitor unit disclosed in the existing patent announcement number CN102683024B includes: multiple capacitor cells, all capacitor cells are arranged in a matrix form into a capacitor array, and the electrodes of each capacitor cell are bidirectionally led up and down; two upper and lower composite busbars, covering the upper and lower sides of the capacitor array and connected to the electrodes of each capacitor cell.

[0004] Although the above-mentioned prior art can improve certain characteristics to a certain extent, the integration is not high. The electrodes are bidirectionally led up and down, and need to be connected to the flexible plug strip through a long distance path. The external lead ends also require additional support structures, and the joints between the upper and lower lead breaks and the flexible plug strip need to be aligned. After long-term use, local damage occurs, and other components are easily damaged during disassembly. As for its rectangular array arrangement, although the capacitor housing is a heat dissipation housing, there is a lack of heat-conducting components between adjacent ones, and the temperature rise in the center area is higher than that in the edge area. The requirements for environmental compatibility and safety still need to be improved. In response to the above problems, a bipolar electrolytic capacitor with a modular design is proposed. Summary of the invention

[0005] The object of the present invention is to provide a bipolar electrolytic capacitor with a modular design to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A bipolar electrolytic capacitor with a modular design comprises a shell, which comprises a shell and a cover connected to the top of the shell, on which wiring electrodes are installed; a plurality of capacitor units arranged in the shell, which comprise a core and pins connected to both sides of the core, and a plurality of pins located on the same side are connected through a busbar; and an isolation frame for installing and isolating adjacent capacitor units, which comprises a bracket for supporting the core and a connecting sleeve connected to both sides of the bracket, a heat dissipation groove is provided on the outer side of the bracket, the connecting sleeve is connected to a positioning frame away from one end of the bracket, and a plurality of positioning frames located on the same side are connected through a positioning piece, and a limiting piece for limiting the core is installed at a position on the bracket corresponding to the connecting sleeve.

[0008] When voltage is applied, the impregnated electrolyte in each capacitor unit will produce a chemical reaction to generate charge carriers, which will produce opposite electric field effects at both ends, thereby accumulating charges to achieve the purpose of power storage. By reasonably arranging the number of capacitor units and their connection mode, the total capacitance and smooth output voltage curve can be flexibly adjusted to better match the actual load requirements.

[0009] In an optional solution: anode foils are arranged bi-directionally and symmetrically in the core, and a dense oxide film is formed on the surface of the anode foils as a dielectric layer; an isolation electrolytic paper is arranged between the two anode foils, and an impregnating electrolyte is also arranged in the core.

[0010] The anode foil is symmetrically designed, and both ends can be used as the "positive electrode" or "negative electrode". The pins can be aluminum or copper and connected to the internal anode layer by welding. The anode foil is high-purity aluminum foil or tantalum foil, and the surface is electrochemically corroded to form a porous structure to increase the surface area. The impregnated electrolyte is impregnated in the porous anode and the isolation electrolytic paper. The isolation electrolytic paper is located between the two anode foils to prevent direct contact short circuit and absorb the impregnated electrolyte at the same time. The cathode of the bipolar capacitor is directly acted by the impregnated electrolyte, and a capacitor structure is formed with the anodes on both sides through the oxide layer. When the voltage flows from one terminal to the other, the oxide layer of one anode foil acts as a dielectric layer and the electrolyte acts as a cathode; conversely, when the voltage is reversed, the oxide layer of the other anode foil plays a role.

[0011] In an optional solution: the busbar includes a busbar, the pin is connected to a pin ring at one end away from the core, and the busbar passes through the pin ring; a conductive rubber ring is connected to the busbar, a group of pin rings corresponds to a group of conductive rubber rings; and a lead is connected to one end of the busbar.

[0012] In an optional solution: two groups of wiring electrodes are installed on the cover, and the bottom ends of the wiring electrodes extend to the bottom of the cover and are connected to the bus bar through a protective resistor.

[0013] In an optional solution: an insulating oil input pipe is provided on the cover, and a sealing plug is installed on the insulating oil input pipe; four groups of limit rods are connected to the bottom of the cover, two groups of limit rods are provided on one side of the core, and the pin is located between the two groups of limit rods.

[0014] Insulating oil is injected, which can isolate the insulating material inside the capacitor from contact with the air and prevent oxidation of the insulating material, thereby extending the service life of the capacitor. At the same time, the insulating oil can also prevent moisture from invading the interior of the capacitor and avoid the degradation of insulation performance due to moisture.

[0015] In an optional solution: the positioning member includes a positioning bar, the outer wall of which is in contact with the inner wall of the positioning frame; end plates arranged at both ends of the positioning bar; and positioning screws for fixing the end plates to the ends of the positioning bar.

[0016] Select positioning strips of corresponding lengths according to actual needs. The positioning strips pass through multiple positioning frames. After the positioning frames are installed, fixed end plates can be installed at both ends of the positioning frames to limit the movement of the positioning strips. Multiple isolation frames can be fixed after modular splicing. The operation is convenient and quick, reducing the number of fixing steps and component settings, and is also easy to disassemble and assemble later.

[0017] In an optional scheme: four groups of limit members are installed on the same group of the brackets, and the limit members include a limit block slidably set on the bracket, the limit block extends to the side of the inner wall of the bracket close to the core body, and the bracket is provided with a storage groove for slidingly accommodating the limit block; a guide rod connected to one side of the limit block and slidingly matched with the bracket, and the bracket is provided with a rectangular hole for the guide rod to slide; and two groups of springs connected to the side of the limit block close to the guide rod, and the springs are connected to the inner wall of the storage groove.

[0018] In an optional solution: the rectangular hole is connected to the inner cavity of the connecting sleeve, the end of the connecting sleeve away from the rectangular hole is connected to the through hole set on the positioning frame, and the end of the guide rod away from the limit block is provided with a guiding inclined surface that cooperates with the positioning strip.

[0019] When the limit block is stored in the storage groove, the guide rod extends through the through hole to the positioning frame. If the limit block is not completely reset to fix the core body, when the positioning strip passes through the positioning frame, the bottom contacts the guide slope, and when pressed down, the guide rod is squeezed to slide and be stored in the through hole and the rectangular hole, thereby stabilizing the position of the limit block. At the same time, after the positioning strip is installed, the sliding of the limit block can also be restricted, thereby fixing the stable core body of the limit block, thereby playing a multiple fixing role.

[0020] In an optional scheme: the conductive rubber ring includes a rubber ring body 1 arranged at the top of the pin ring and a rubber ring body 2 arranged at the bottom of the pin ring, the bottom of the rubber ring body 1 is connected to two groups of symmetrically arranged extension strips, the bottom of the extension strips is connected to the docking buckles, and the rubber ring body 2 is provided with two groups of docking grooves corresponding to the docking buckles, one side of the docking groove is connected to the outside, and the inner wall of the rubber ring body 1 is provided with a contact area that contacts the bus bar.

[0021] In an optional solution: a grounding terminal installed on the cover is provided between the two groups of wiring electrodes.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention adopts a modular design concept. The capacitor unit is installed on the isolation frame. The adjacent isolation frames are spliced. The isolation frames are spliced ​​and fixed by connecting the positioning pieces to several positioning frames. The isolation frames play the role of insulation isolation and heat dissipation. The capacitor unit is modularly assembled. At the same time, the core can be stably installed on the bracket through the limiter, which is also convenient for subsequent disassembly and maintenance. The capacitor stores charge through the formation of electrolyte and oxide film. Multiple capacitor units are combined together to form a larger capacitor module to meet higher capacitance requirements, thereby improving the flexibility and scalability of the capacitor, so that the capacitor can better adapt to different application scenarios and improve environmental compatibility.

[0024] The present invention improves the energy density and power density of the capacitor by optimizing the internal layout and connection mode of the module, which can reduce the overall volume and weight, while improving the reliability and maintenance convenience of the capacitor, increasing the service life, and being more suitable for supporting use with high-performance electrical equipment through a stable and reliable connection and fixing mode;

[0025] Insulating oil is injected into the inner and outer shells of the present invention, and the insulating oil can isolate the insulating material inside the capacitor from contact with the air, preventing the insulating material from oxidation reaction, thereby extending the service life of the capacitor. At the same time, the heat conduction and heat dissipation grooves of the isolation frame can evenly distribute the heat of the capacitor, reduce problems caused by high local temperature, and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a schematic diagram of the structure inside the shell of the present invention.

[0028] Figure 3 It is a schematic diagram of the structure of the shell in the present invention.

[0029] Figure 4 It is a schematic diagram of the structure of the capacitor unit and the isolation frame in the present invention.

[0030] Figure 5 It is a schematic diagram of the structure of the positioning member in the present invention.

[0031] Figure 6 It is a structural schematic diagram of the isolation frame in the present invention.

[0032] Figure 7 It is a schematic diagram of the local structure of the isolation frame in the present invention.

[0033] Figure 8 It is a schematic diagram of the structure of the conductive rubber ring in the present invention.

[0034] Fig. 9 It is a schematic diagram of the split structure of the conductive rubber ring in the present invention.

[0035] In the figure: 1, shell; 2, capacitor unit; 3, isolation frame; 11, shell; 12, cover; 13, wiring electrode; 14, grounding terminal; 15, sealing plug; 16, limit rod; 21, core; 22, pin; 23, bus; 24, pin ring; 31, bracket; 32, connecting sleeve; 33, positioning frame; 34, positioning piece; 35, limit piece; 36, through hole; 231, bus bar; 232, conductive rubber ring; 233, lead; 341, positioning strip; 342, end plate; 343, positioning screw; 351, limit block; 352, guide rod; 353, spring; 354, guide ramp; 2321, rubber ring body one; 2322, rubber ring body two; 2323, extension strip; 2324, docking buckle; 2325, docking groove; 2326, contact area. DETAILED DESCRIPTION

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-Figure 9In this embodiment, a bipolar electrolytic capacitor of modular design includes a housing 1, which includes a housing 11 and a cover 12 connected to the top of the housing 11. The housing 1 and the cover 12 can be connected by welding to firmly connect the edge parts of the housing and the cover together; or connected by using existing sealants; or the housing and the cover are fixed together by fasteners such as bolts and nuts; the cover 12 is provided with a wiring electrode 13; the wiring electrode 13 is used for connecting the capacitor to an external circuit;

[0039] A plurality of capacitor units 2 are arranged in the housing 11, comprising a core 21 and pins 22 connected to both sides of the core 21, the pins 22 on both sides can be arranged symmetrically, and a plurality of pins 22 on the same side are connected through a busbar 23; and

[0040] An isolation frame 3 for installing and isolating adjacent capacitor units 2, comprising a bracket 31 for supporting the core 21 and a connecting sleeve 32 connected to both sides of the bracket 31, wherein a heat dissipation groove is provided on the outer side of the bracket 31, and the setting of the heat dissipation groove is conducive to the outflow of heat, and the end of the connecting sleeve 32 away from the bracket 31 is connected to a positioning frame 33, and a plurality of positioning frames 33 located on the same side are connected by a positioning member 34, and a position corresponding to the connecting sleeve 32 on the bracket 31 is provided with a limiting member 35 for limiting the core 21;

[0041] By adopting the above scheme, the capacitor unit 2 is installed on the isolation frame 3, and the adjacent isolation frames 3 are spliced. The isolation frames 3 are spliced ​​and fixed by connecting the positioning members 34 to several positioning frames 33, and the capacitor unit 2 is assembled modularly. At the same time, the core 21 can be stably installed on the bracket 31 through the limiting member 35, which is also convenient for subsequent disassembly and maintenance;

[0042] When voltage is applied, the impregnated electrolyte in each capacitor unit 2 will produce a chemical reaction to generate charge carriers, which will produce opposite electric field effects at both ends, thereby accumulating charges and achieving the purpose of storing electricity. By reasonably arranging the number of capacitor units 2 and the connection mode between them, the total capacitance of the entire capacitor group can be flexibly adjusted. At the same time, this design can also smooth the output voltage curve, ensuring that the capacitor group can better match various load requirements in actual applications. The configuration of the capacitor unit 2 can be optimized according to the requirements of large-capacity energy storage or stable voltage output.

[0043] Furthermore, the core 21 is provided with anode foils arranged symmetrically in both directions, and a dense oxide film is formed on the surface of the anode foils as a dielectric layer; an isolation electrolytic paper is provided between the two anode foils, and an impregnated electrolyte is also provided in the core 21;

[0044] The anode foil is symmetrically designed, and both ends can be used as "positive" or "negative", and the pin 22 can be aluminum or copper and connected to the internal anode layer by welding;

[0045] The anode foil is a high-purity aluminum foil or tantalum foil, and the surface is electrochemically corroded to form a porous structure to increase the surface area; the impregnation electrolyte is impregnated in the porous anode and the isolation electrolytic paper, and the isolation electrolytic paper is located between the two anode foils to prevent direct contact short circuit and absorb the impregnation electrolyte at the same time; the cathode of the bipolar capacitor is directly served by the impregnation electrolyte, and a capacitor structure is formed with the anodes on both sides through the oxide layer;

[0046] When voltage flows from one terminal to the other, the oxide layer (Al 2 O 3 ) as the dielectric layer, and the electrolyte as the cathode; conversely, when the voltage is reversed, the oxide layer of the other anode foil plays a role;

[0047] It should be noted that the oxide layer thickness of the two anode foils must be strictly consistent to ensure bidirectional voltage balance, the isolation layer must be fully infiltrated with electrolyte to ensure cathode conductivity, and the core 21 must be stably packaged. The packaging structure of the core 21 is an aluminum shell.

[0048] See also Figure 4 and Figure 5 The busbar 23 includes a busbar 231, the pin 22 is connected to a pin ring 24 at one end away from the core 21, and the busbar 231 passes through the pin ring 24; a conductive rubber ring 232 connected to the busbar 231, and a group of the pin rings 24 corresponds to a group of the conductive rubber rings 232; and a lead 233 connected to one end of the busbar 231;

[0049] Specifically, the capacitor unit 2 is an aluminum substrate, and its operating voltage range is recommended to be set between 5V-400V. The capacitance can be selected in the range of 1uF to 1mF to meet the requirements of different application scenarios. Multiple pins 22 are connected in parallel through the bus bar 231 to ensure good current transmission efficiency while also ensuring mechanical strength.

[0050] When the bus bar 231 is installed, it passes through multiple pin rings 24. The bus bar 231 contacts the pin rings 24 and is fixed by the conductive rubber ring 232. The bus bar 231 serves as a channel for transmitting electric energy. When the bus bar 231 is connected to the pin rings 24, the capacitor can participate in the electric energy storage and release process in the circuit. In practice, it is necessary to pay attention to selecting appropriate bus bar 231 and capacitor specifications to meet the actual needs of the circuit system.

[0051] The pins 22 on the same side are isolated from each other. Meanwhile, the conductive rubber ring 232 installed on the bus bar 231 can also play a role in isolating adjacent pins 22 . In actual use, a voltage-equalizing resistor can also be connected in series to the pins 22 .

[0052] See also Figure 3 and Figure 4, two groups of wiring electrodes 13 are installed on the cover 12, and the bottom ends of the wiring electrodes 13 extend to the bottom of the cover 12 and are connected to the bus bar 231 through a protective resistor;

[0053] Specifically, the two groups of wiring electrodes 13 can connect the positive and negative lines in the circuit. The electrodes without distinction between positive and negative make the capacitor more flexible when connected externally. There is no need to consider the positive and negative polarity of the capacitor during the circuit design stage or the actual installation process, thereby simplifying the circuit design and installation steps.

[0054] See also Figure 1 or Figure 3 The cover 12 is provided with an insulating oil input pipe, and a sealing plug 15 is installed on the insulating oil input pipe; four groups of limit rods 16 are connected to the bottom of the cover 12, two groups of limit rods 16 are provided on one side of the core 21, and the pin 22 is located between the two groups of limit rods 16;

[0055] Specifically, insulating oil can be injected into the shell 11. The insulating oil can isolate the insulating material inside the capacitor from contact with the air and prevent the insulating material from undergoing oxidation reaction, thereby extending the service life of the capacitor. At the same time, the insulating oil can also prevent moisture from invading the interior of the capacitor and avoid the degradation of insulation performance due to moisture. The insulating oil can evenly distribute heat and reduce problems caused by high local temperatures. For some capacitors that require heat dissipation, the insulating oil can provide a good thermal circulation loop.

[0056] The hot oil can be cooled through the radiator and then returned to the inside of the capacitor, thereby achieving cooling and heat dissipation of the capacitor. In this application, additional components can be added to the capacitor according to actual needs.

[0057] See also Figure 4 and Figure 5 The positioning member 34 includes a positioning bar 341, the outer wall of which contacts the inner wall of the positioning frame 33; end plates 342 disposed at both ends of the positioning bar 341; and positioning screws 343 for fixing the end plates 342 to the ends of the positioning bar 341;

[0058] Specifically, a positioning bar 341 of corresponding length is selected according to actual needs. The positioning bar 341 passes through multiple positioning frames 33. After the positioning frames 33 are installed, fixed end plates 342 can be installed at both ends of the positioning frames 33 to limit the movement of the positioning bar 341. Multiple isolation frames 3 can be fixed after modular splicing.

[0059] See also Figure 6 and Figure 7Four groups of limit members 35 are installed on the same group of the brackets 31 to improve the stability of the installation of the core 21. The limit members 35 include a limit block 351 slidably arranged on the bracket 31, the limit block 351 extends to the inner wall of the bracket 31 close to the core 21, and a receiving groove for slidingly receiving the limit block 351 is provided in the bracket 31; a guide rod 352 connected to one side of the limit block 351 and slidably matched with the bracket 31, and a rectangular hole for sliding the guide rod 352 is provided on the bracket 31; and two groups of springs 353 connected to the side of the limit block 351 close to the guide rod 352, and the springs 353 are connected to the inner wall of the receiving groove;

[0060] Specifically, when the core body 21 is installed, the limit block 351 is squeezed and stored in the storage groove, and then the core body 21 is placed in the bracket 31, and the limit block 351 is reset due to the force of the spring 353.

[0061] See also Figure 7 The rectangular hole is connected to the inner cavity of the connection sleeve 32, and the end of the connection sleeve 32 away from the rectangular hole is connected to the through hole 36 set on the positioning frame 33. The end of the guide rod 352 away from the limit block 351 is provided with a guide inclined surface 354 that cooperates with the positioning strip 341;

[0062] Specifically, when the limit block 351 is received in the receiving groove, the guide rod 352 extends through the through hole 36 to the positioning frame 33. If the limit block 351 is not completely reset to fix the core body 21, when the positioning strip 341 passes through the positioning frame 33, the bottom contacts the guide slope 354, and when pressed down, the guide rod 352 is squeezed to slide and be received in the through hole 36 and the rectangular hole, thereby stabilizing the position of the limit block 351. At the same time, after the positioning strip 341 is installed, the sliding of the limit block 351 can also be restricted, so that the limit block 351 can stably fix the core body 21.

[0063] See also Figure 8 and Fig. 9 The conductive rubber ring 232 includes a rubber ring body 1 2321 arranged at the top of the pin ring 24 and a rubber ring body 2 2322 arranged at the bottom of the pin ring 24. The bottom of the rubber ring body 1 2321 is connected to two groups of symmetrically arranged extension strips 2323, and the bottom of the extension strip 2323 is connected to a docking buckle 2324. The rubber ring body 2322 is provided with two groups of docking grooves 2325 corresponding to the docking buckles 2324. One side of the docking groove 2325 is connected to the outside. The inner wall of the rubber ring body 1 2321 is provided with a contact area 2326 that contacts the bus bar 231. During operation, the operator needs to pull the rubber ring body 1 2321 to slide on the bus bar 231 with external force, and the contact area 2326 is in close contact with the outer wall of the bus bar 231;

[0064] Specifically, the corresponding conductive rubber ring 232 can be installed on the busbar 231 according to the plug-in installation of the busbar 231 on the pin ring 24, or the rubber ring body 2322 can be arranged at the bottom of the pin ring 24 first, and the rubber ring body 1 2321 is passed through the busbar 231. After the busbar 231 passes through the pin ring 24, the rubber ring body 1 2321 and the rubber ring body 2 2322 are adjusted to be close, and the docking buckle 2324 is docked into the docking groove 2325. The rubber ring body 1 2321 and the rubber ring body 2 2322 cooperate to clamp and fix the pin ring 24, and the contact area 2326 is in close contact with the busbar 231. The conductive rubber ring 232 can provide a stable and firm support for the busbar 231, so that the current can flow smoothly between the busbar 231 and the pin ring 24.

[0065] Furthermore, a grounding terminal 14 installed on the cover 12 is provided between the two groups of wiring electrodes 13 to perform a grounding operation.

[0066] The working principle of the present invention is:

[0067] The core 21 is placed in the bracket 31, and the limit block 351 is squeezed and stored in the storage groove. Then the core 21 is placed in the bracket 31, and the limit block 351 is reset by the force of the spring 353; the capacitor unit 2 is installed on the isolation frame 3, and the adjacent isolation frames 3 are spliced. The positioning strip 341 of the corresponding length is selected according to actual needs. The positioning strip 341 passes through a plurality of positioning frames 33. After the positioning frame 33 is installed, the fixed end plates 342 can be installed at both ends of the positioning frame 33 to limit the movement of the positioning strip 341. When the positioning strip 341 passes through the positioning frame 33, the bottom contacts the guide slope 354. When pressed down, the guide rod 352 is squeezed to slide and be stored in the through hole 36 and the rectangular hole, thereby stabilizing the position of the limit block 351. At the same time, after the positioning strip 341 is installed, the limit block The sliding of 351 is restricted, so that the limit block 351 can stably fix the core 21; after multiple isolation frames 3 are modularly spliced, the fixed bus bar 231 can be installed, through multiple pin rings 24, the bus bar 231 contacts the pin ring 24, and is fixed by the conductive rubber ring 232. First, the rubber ring body 2322 is arranged at the bottom of the pin ring 24, and the rubber ring body 1 2321 is passed through the bus bar 231. After the bus bar 231 passes through the pin ring 24, the rubber ring body 1 2321 is adjusted to be close to the rubber ring body 2322, and the docking buckle 2324 is docked into the docking groove 2325. The rubber ring body 1 2321 cooperates with the rubber ring body 2 2322 to clamp and fix the pin ring 24, and the contact area 2326 is in close contact with the bus bar 231.

[0068] When voltage is applied, the impregnated electrolyte in each capacitor unit 2 will produce a chemical reaction to generate charge carriers, which will produce opposite electric field effects at both ends, thereby accumulating charges to achieve the purpose of storing electricity. By reasonably arranging the number of capacitor units 2 and their connection mode, the total capacitance and smooth output voltage curve can be flexibly adjusted to better match the actual load requirements.

[0069] Operation steps and precautions:

[0070] 1. Determine the required capacitance and maximum withstand voltage level;

[0071] 2. Select the appropriate number and specifications of capacitor units 2 according to the calculation results;

[0072] 3. Assemble the selected capacitor units 2 in a predetermined series-parallel manner; connect all necessary power input ports and output interfaces;

[0073] 4. Carry out preliminary functional tests and confirm that there is no short circuit or leakage before putting it into use.

[0074] In practical applications, conductive contact sheets of different materials can be selected as connection media according to different customer needs, or capacitor units 2 of different capacities can be replaced to adjust the overall performance;

[0075] In addition to the above basic configuration, it is also possible to consider introducing an intelligent management system to monitor the working status of each capacitor unit 2 in real time and automatically make corresponding control decisions based on this, such as disconnecting the failed unit to prevent damage to the remaining normally operating parts. In addition, it is also possible to explore the use of more advanced nanomaterials to replace the existing ordinary metal foil, which in theory will help significantly improve the charge and discharge rate and cycle life of the battery.

[0076] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A bipolar electrolytic capacitor of modular design, characterized in that: The invention comprises a housing (1), which comprises a housing (11) and a cover (12) connected to the top of the housing (11), wherein a wiring electrode (13) is mounted on the cover (12); a plurality of capacitor units (2) arranged in the housing (11), which comprise a core (21) and pins (22) connected to both sides of the core (21), wherein the plurality of pins (22) located on the same side are connected via a busbar (23); and an isolation frame (3) for mounting and isolating adjacent capacitor units (2), which comprises a bracket (31) for supporting the core (21) and a bracket (32) connected to the bracket ( The bracket (31) has a connecting sleeve (32) on both sides thereof, a heat dissipation groove is provided on the outer side of the bracket (31), the connecting sleeve (32) is connected to a positioning frame (33) at one end away from the bracket (31), and a plurality of positioning frames (33) located on the same side are connected via a positioning member (34), and a limiting member (35) for limiting the position of the core body (21) is installed at a position corresponding to the connecting sleeve (32) on the bracket (31); the positioning member (34) includes a positioning strip (341), the outer wall of the positioning strip (341) is in contact with the inner wall of the positioning frame (33); and a positioning strip (341) is provided at both ends thereof. an end plate (342); and a positioning screw (343) for fixing the end plate (342) to the end of the positioning strip (341); four groups of limiting members (35) are installed on the same group of the brackets (31); the limiting members (35) include a limiting block (351) slidably arranged on the bracket (31), the limiting block (351) extending to a side of the inner wall of the bracket (31) close to the core body (21), and a receiving groove for slidably receiving the limiting block (351) is provided in the bracket (31); a fixing screw (343) is connected to one side of the limiting block (351) and slidably cooperates with the bracket (31) The bracket (31) is provided with a guide rod (352) for the guide rod (352) to slide; and two groups of springs (353) connected to the side of the limit block (351) close to the guide rod (352), the springs (353) being connected to the inner wall of the storage groove; the rectangular hole is communicated with the inner cavity of the connection sleeve (32), the end of the connection sleeve (32) away from the rectangular hole is communicated with a through hole (36) provided on the positioning frame (33), and the end of the guide rod (352) away from the limit block (351) is provided with a guide inclined surface (354) that cooperates with the positioning strip (341).

2. A modular bipolar electrolytic capacitor according to claim 1, characterized in that: Anode foils are arranged in a bidirectional and symmetrical manner in the core body (21), and a dense oxide film is formed on the surface of the anode foil as a dielectric layer; an isolation electrolytic paper is arranged between two anode foils, and an impregnating electrolyte is also arranged in the core body (21).

3. A modular bipolar electrolytic capacitor according to claim 1, characterized in that: The busbar (23) comprises a busbar (231), one end of the pin (22) away from the core (21) is connected to a pin ring (24), the busbar (231) passes through the pin ring (24); a conductive rubber ring (232) connected to the busbar (231), a group of the pin rings (24) corresponding to a group of the conductive rubber rings (232); and a lead wire (233) connected to one end of the busbar (231).

4. A modular bipolar electrolytic capacitor according to claim 3, characterized in that: Two groups of wiring electrodes (13) are mounted on the cover (12), and the bottom ends of the wiring electrodes (13) extend to the bottom of the cover (12) and are connected to the bus bar (231) via a protective resistor.

5. A modular bipolar electrolytic capacitor according to claim 4, characterized in that: An insulating oil input pipe is provided on the cover (12), and a sealing plug (15) is installed on the insulating oil input pipe; four groups of limit rods (16) are connected to the bottom of the cover (12), two groups of limit rods (16) are provided on one side of the core (21), and the pin (22) is located between the two groups of limit rods (16).

6. The modular bipolar electrolytic capacitor according to claim 3, characterized in that: The conductive rubber ring (232) comprises a rubber ring body 1 (2321) arranged at the top of the pin ring (24); a rubber ring body 2 (2322) arranged at the bottom of the pin ring (24); an extension strip (2323) connected to the bottom of the rubber ring body 1 (2321) and arranged symmetrically; a docking buckle (2324) connected to the bottom of the extension strip (2323); two groups of docking grooves (2325) corresponding to the docking buckles (2324) arranged on the rubber ring body 2 (2322), one side of the docking grooves (2325) being connected to the outside, and a contact area (2326) arranged on the inner wall of the rubber ring body 1 (2321) and contacting the bus bar (231).

7. The modular bipolar electrolytic capacitor according to claim 1, characterized in that: A grounding terminal (14) mounted on the cover (12) is provided between the two groups of wiring electrodes (13).

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