Current collector capacitor

Abstract

The current collector capacitor comprises an aluminum shell, a battery cell, inclined rib bonding pads arranged at the two ends of the battery cell, an anode cover plate and a cathode cover plate, wherein the anode cover plate and the cathode cover plate are installed at the two ends of the aluminum shell respectively. The aluminum shell is provided with an accommodating space for accommodating the battery cell, one end of the aluminum shell is open, and the other end is provided with a through hole; an annular stop part is arranged on the inner wall of the opening end of the aluminum shell; the cathode cover plate is arranged at the opening end and is stopped by the stopping part so as to lead out a capacitor cathode; the anode cover plate is mounted at the through hole end so as to lead out a capacitor anode; the inclined rib bonding pad is circular, and the diameter of the inclined rib bonding pad is equal to that of the anode cover plate or the cathode cover plate; a central circular hole is formed in the center of the inclined rib bonding pad, and a plurality of inclined ribs are radially arranged from the central circular hole along the radial direction of the inclined rib bonding pad. According to the current collector capacitor, the safety problems of local thermal runaway or local short circuit, obvious heating and the like caused by the capacitor can be avoided, and the reliability and the service life of a capacitor product are further improved.

Description

Technical Field

[0001] This invention belongs to the field of electronic device technology, and in particular relates to a current collector capacitor. Background Technology

[0002] As a highly efficient energy storage component, capacitors have a wide range of applications and are gradually showing a diversified trend in use. In addition to common scenarios such as low-voltage power storage and power supply for microwave transmission and scanning data, they are also beginning to be used in replacing lithium batteries and breaking through the lifespan bottleneck of traditional batteries. In particular, supercapacitor modules have been deployed on a large scale in the power supply links of new energy power systems and energy storage power supply.

[0003] However, there is currently a lack of unified standards for the internal structure of supercapacitors on the market. Different manufacturers have significant differences in current collector design and quantity layout, resulting in large fluctuations in performance of products of the same size. For example, supercapacitors used in power bus circuits often need to withstand charging and discharging currents as high as 5C-10C. Traditional current collector structures are prone to premature aging in such high-power scenarios, leading to problems such as current concentration and significant heat generation at current collector connection nodes.

[0004] Currently, some manufacturers use a "retaining the edge and exposing the white" coating process. This involves leaving uncoated metal foil areas (exposed white areas) at the edges of the positive and negative electrodes. These areas are then laser-processed into distributed tabs, which are subsequently wound into cylindrical cells. Finally, the tabs are bent and flattened using a flattening machine. While this process improves current distribution uniformity to some extent, it easily generates metal dust and burr residue during processing. If these impurities exist inside the cell, they not only affect electrochemical performance but may also cause safety hazards such as localized short circuits and thermal runaway, thus limiting the product's reliability and lifespan.

[0005] The above background information is provided only to aid in understanding the inventive concept and technical solution of this invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0006] The purpose of this invention is to provide a current collector capacitor to solve at least one of the problems mentioned above in the background art.

[0007] To achieve the above objectives, the technical solution of this invention is implemented as follows: A current collector capacitor includes an aluminum shell, a battery cell placed inside the aluminum shell, inclined rib pads disposed at both ends of the battery cell, and an anode cover plate and a cathode cover plate respectively installed at both ends of the aluminum shell; the aluminum shell has a receiving space for accommodating the battery cell, one end of the aluminum shell is open and the other end has a through hole; the inner wall of the open end of the aluminum shell is provided with an annular stop portion; the cathode cover plate is installed at the open end and stops the cathode of the capacitor through the stop portion; the anode cover plate is installed at the through hole end to lead out the anode of the capacitor; the inclined rib pads are circular, and the diameter of the inclined rib pads is equal to the diameter of the anode cover plate or the cathode cover plate; a central circular hole is provided at the center of the inclined rib pads, and multiple inclined ribs are arranged radially from the central circular hole along the radial direction of the inclined rib pads.

[0008] In some embodiments, the battery cell includes an inner layer of electrolytic paper, a positive electrode aluminum foil, an intermediate layer of electrolytic paper, and a negative electrode aluminum foil; the positive electrode aluminum foil and the negative electrode aluminum foil are respectively provided with exposed edges, and the exposed edges form positive and negative tabs at both ends of the battery cell.

[0009] In some embodiments, the anode cover is circular, with a cylindrical anode integrally formed on one side and a smooth plane on the side facing away from the cylindrical anode.

[0010] In some embodiments, the cathode cover plate is in the shape of a second frustum, comprising a first frustum and a second frustum, wherein a cylindrical cathode is disposed at the center of the side of the first frustum away from the second frustum.

[0011] In some embodiments, the inclined rib pad is circular, and the diameter of the inclined rib pad is equal to the diameter of the anode cover plate or the cathode cover plate 5.

[0012] In some embodiments, the positive electrode aluminum foil includes a positive electrode base aluminum foil and an exposed white edge extending from one end edge in the longitudinal direction of the positive electrode base aluminum foil; the negative electrode aluminum foil includes a negative electrode base aluminum foil and an exposed white edge extending from one end edge in the longitudinal direction of the negative electrode base aluminum foil.

[0013] In some embodiments, the side of the inclined rib pad with the inclined rib presses against the battery cell and contacts the battery cell, while the side away from the inclined rib contacts the smooth surface of the anode cover plate or the cathode cover plate.

[0014] In some embodiments, the diameter of the first frustum is greater than the diameter of the second frustum, the diameter of the second frustum is equal to the inner diameter of the aluminum shell, and the periphery of the first frustum abuts against the stop portion at the opening end of the aluminum shell.

[0015] In some embodiments, the cathode cover is a metal cover, and the cylindrical cathode is integrally formed with the first frustum and the second frustum.

[0016] In some embodiments, an explosion-proof valve is provided parallel to the cylindrical cathode and close to the edge of the cathode cover plate.

[0017] The beneficial effects of the technical solution of this invention are: Compared with existing technologies, the current collector capacitor of this invention can avoid safety problems such as local thermal runaway or local short circuit and significant heat generation caused by the capacitor, thereby improving the reliability and service life of the capacitor product; and greatly reducing the production and maintenance costs of the capacitor. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional schematic diagram of a current collector capacitor according to an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of a current collector capacitor according to an embodiment of the present invention from another angle; Figure 3 This is a partially exploded schematic diagram of a current collector capacitor according to an embodiment of the present invention; Figure 4 This is a three-dimensional schematic diagram of the cell of a current collector capacitor according to an embodiment of the present invention; Figure 5 This is a three-dimensional schematic diagram of the current collector capacitor cell from another angle according to an embodiment of the present invention; Figure 6 This is a cross-sectional view of the cell of a current collector capacitor according to an embodiment of the present invention; Figure 7 yes Figure 6 A magnified view of part A in the diagram; Figure 8 This is a magnified view of part B in diagram 6; Figure 9 This is a cross-sectional schematic diagram of the aluminum shell of a current collector capacitor according to an embodiment of the present invention; Figure 10 This is a three-dimensional schematic diagram of the cathode cover plate and the inclined rib pad of a current collector capacitor according to an embodiment of the present invention; Figure 11 This is a three-dimensional schematic diagram of the anode cover plate and the inclined rib pad of a current collector capacitor according to an embodiment of the present invention; Figure 12 This is another perspective view of the anode cover plate and the inclined rib pad of the current collector capacitor according to an embodiment of the present invention; Figure 13This is a partial cross-sectional view of the slanted rib pad of a current collector capacitor according to an embodiment of the present invention; Figure 14 This is another perspective view of the slanted rib pad of the current collector capacitor according to an embodiment of the present invention; Figure 15 yes Figure 14 A partial cross-sectional diagram. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of the embodiments of the present invention clearer and more understandable, and to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0021] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be for both fixing and circuit connection purposes.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, unless otherwise expressly specified and limited, "a plurality of" means two or more. Terms such as "installed," "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Reference Figures 1-3 , Figure 9 As shown in the figure, as an embodiment of the present invention, a current collector capacitor is provided, including an aluminum shell, a battery cell 2 placed inside the aluminum shell 1, inclined rib pads 3 disposed at both ends of the battery cell 2, and an anode cover plate 4 and a cathode cover plate 5 respectively installed at both ends of the aluminum shell 1; the aluminum shell 1 is provided with a receiving space to accommodate the battery cell 2, one end of the aluminum shell 1 is open and the other end is provided with a through hole, and an annular stop portion 12 is provided on the inner wall of the open end of the aluminum shell 1; the cathode cover plate 5 is installed at the open end and is stopped by the stop portion 12 to lead out the capacitor. Cathode; the anode cover plate 4 is installed at the through hole end to lead out the capacitor anode; the inclined rib pad 3 is circular, and the diameter of the inclined rib pad 3 is equal to the diameter of the anode cover plate 4 or the cathode cover plate 5; a central circular hole 32 is provided in the center of the inclined rib pad 3, and multiple inclined ribs 31 are arranged radially from the central circular hole 32 along the radial direction of the inclined rib pad 3, and the area between each two inclined ribs 31 is a flat fan-shaped surface, and the multiple inclined ribs divide the inclined rib pad 3 into multiple flat fan-shaped surfaces.

[0025] The positive and negative aluminum foils 21 and 22 of the battery cell 2 are respectively provided with exposed edges, which form positive and negative tabs 231 and 232 at both ends of the battery cell 2. The inclined rib pad 3 includes a flat area 30 and an inclined rib 31 protruding from the flat area 30. There are two inclined rib pads 3, which are respectively installed at both ends of the battery cell 2. The inclined rib 31 axially presses the positive and negative tabs 231 and 232 formed by the exposed edges into the battery cell 2, so that the positive and negative tabs at both ends of the battery cell 2 form a pressure-collapsed area 233. The inclined rib is laser-welded to the pressure-collapsed area 233, while the other areas of the positive and negative tabs abut against the flat area 30 of the inclined rib pad 3. One side of the inclined rib pad is welded to the pressure-collapsed area through the inclined rib, while the other side abuts against the anode cover plate 4 or the cathode cover plate 5, so as to lead out the positive and negative electrodes from both ends of the battery cell 2. By pressing the positive and negative tabs at both ends of the battery cell 2 with the inclined rib pad 3, the investment in the battery cell 2 flattening tab equipment is reduced, and the adverse effects of elemental metal dust and burrs generated during the flattening machine operation on the battery cell 2 can be avoided.

[0026] Reference Figure 4-8 As shown, the battery cell 2 includes an inner layer of electrolytic paper 20, a positive electrode aluminum foil 21, an intermediate layer of electrolytic paper 23, and a negative electrode aluminum foil 22. The positive electrode aluminum foil 21 includes a positive electrode base aluminum foil 210 and an exposed edge extending longitudinally from one end of the positive electrode base aluminum foil 210. The negative electrode aluminum foil 22 includes a negative electrode base aluminum foil 220 and an exposed edge extending longitudinally from one end of the negative electrode base aluminum foil 220. The exposed edge is a pure aluminum layer with a thickness of 30-50 μm and an aluminum purity of 99.999% or higher. The exposed edge of the positive electrode aluminum foil 21 extends in the opposite direction to the exposed edge of the negative electrode aluminum foil 22. The thickness of the positive electrode base aluminum foil 210 is greater than the thickness of the exposed edge, and / or the thickness of the negative electrode base aluminum foil 220 is greater than the thickness of the exposed edge.

[0027] In some embodiments, the thickness of the positive electrode base aluminum foil 210 is greater than or equal to twice the thickness of the exposed edge; the thickness of the positive electrode pure aluminum layer is greater than or equal to the thickness of the inner electrolytic paper 20 or the middle electrolytic paper 23.

[0028] Reference Figures 3-8 As shown, the inner layer electrolytic paper 20, positive electrode aluminum foil 21, middle layer electrolytic paper 23, and negative electrode aluminum foil 22 are wound together to form the battery cell 2. The exposed edges of the positive electrode aluminum foil 21 and the exposed edges of the negative electrode aluminum foil 22 do not overlap. One end of the battery cell 2 is the exposed edge of the wound multi-layer positive electrode aluminum foil 21, and the other end of the battery cell 2 is the exposed edge of the wound multi-layer negative electrode aluminum foil 22. (Refer to...) Figure 6-8As shown, in some embodiments, the outer surface of the wound cell 2 consists of a positive aluminum foil 21 layer, a ring of electrolytic paper, and a ring of exposed white edge of negative aluminum foil 22. With this arrangement, the positive electrode is led out at one end of the cell 2 and the negative electrode is led out at the other end, thereby placing the current collectors at both ends of the capacitor, which facilitates capacitor design, reduces costs, and improves the performance of the aluminum electrolytic capacitor.

[0029] Reference Figures 5-8 As shown, the positive electrode base aluminum foil 210 and the negative electrode base aluminum foil 220 have the same structure. The following description will only take the positive electrode base aluminum foil 210 as an example. The positive electrode base aluminum foil 210 includes a thick pure aluminum foil layer 2101 and an aluminum foil surface layer 2102 symmetrically arranged on both sides of the thick pure aluminum foil layer 2101. In some embodiments, the thickness of the aluminum foil surface layer 2102 is 120-200 μm. The aluminum foil surface layer 2102 adopts a polymer conductive polymer network conductive link to obtain a physical model of a super low impedance composite discharge circuit. Specifically, by uniformly dispersing and coating the thick pure aluminum foil layer 2101 with a conductive polymer powder material solvent and drying the solvent, the surface of the thick pure aluminum foil layer 2101 is covered with a molecular film capillary interface, resulting in a conductive composite aluminum foil with an extremely conductive interface. Then, a capacitance storage factor material is coated on the interface film, so that the capacitance storage factor material contacts the molecular capillary interface, resulting in an extremely low coating contact resistance and an extremely high discharge composite electrode. Through verification using actual products obtained in production, the method of this invention has achieved a discharge current significantly higher than that of conventional coating processes. The threshold of the discharge current varies depending on the thickness of the thick pure aluminum foil layer 2101, thereby enabling customized design of the discharge current and safe control of charge-discharge life. In some embodiments, the capacitance storage factor material is a mixture of activated carbon and flocculant, wherein the activated carbon accounts for 95% or more of the mixture.

[0030] Experiments were conducted using a wound capacitor with a capacitance of 700F, a voltage of 2.7V, a diameter of 35mm, and a height of 70mm. Using the technical solution of this invention, when the total length of the thick pure aluminum foil layer 2101 is 1.2~1.5 meters, the axial conductivity of the 30μm thick pure aluminum foil layer is 65~110A, which can withstand short-term transient discharge of approximately 65~110A, greatly improving the charging and discharging capability.

[0031] Reference Figure 3 , Figure 9As shown, the aluminum shell 1 has a receiving space for accommodating the battery cell 2. One end of the aluminum shell 1 is open, and the other end has a through hole 11. An annular stop portion 12 is provided on the inner wall of the open end of the aluminum shell 1. The cathode cover plate 5 is installed at the open end and is stopped by the stop portion 12. An insulating pad (not shown) is provided at the through hole end of the aluminum shell 1. The anode cover plate 4 is installed at the through hole end and is insulated from the aluminum shell 1 by the insulating pad. It should be noted that the inner wall of the open end of the aluminum shell 1 of a general aluminum electrolytic capacitor is smooth, and the cover plate is fixed at the open end by a rolled edge. An explosion-proof gasket is generally provided at the end opposite the open end. The annular stop portion 12 on the inner wall of the open end and the insulating pad at the other end of the aluminum shell 1 in this invention are the result of the inventor's creative labor. There is no known technology and it is not a conventional design in this field. This design of the present invention can achieve a perfect combination with the cover plate, ultimately improving the electrical performance and safety of the capacitor.

[0032] Reference Figure 3 , Figure 10 As shown, the cathode cover plate 5 is in the shape of a second frustum, comprising a first frustum 51 and a second frustum 52. A cylindrical cathode 53 is disposed at the center of the side of the first frustum 51 away from the second frustum 52. An explosion-proof valve 6 is disposed parallel to the cylindrical cathode 53 and near the edge of the cathode cover plate 5. The diameter of the first frustum 51 is larger than the diameter of the second frustum 52, and the diameter of the second frustum 52 is equal to the inner diameter of the aluminum shell 1. The periphery of the first frustum 51 abuts against the stop portion 12 at the opening end of the aluminum shell 1, and the periphery of the first frustum 51 is welded to the opening position of the aluminum shell 1 by laser welding, thereby encapsulating the cathode cover plate 5 on the aluminum shell 1. In some embodiments, the cathode cover plate 5 is a metal cover plate, and the cylindrical cathode 53 is integrally formed with the first frustum 51 and the second frustum 52. The side of the first frustum 51 away from the second frustum 52 is a smooth plane. The cathode cover 5 designed in this invention will greatly save costs and enhance the sealing performance of the cover, improve the safety of the capacitor, and enhance the electrical performance of the capacitor.

[0033] Reference Figure 3 , Figure 11 , Figure 12 As shown, the anode cover plate 4 is circular, and both sides of the circular anode cover plate 4 are flat surfaces. A cylindrical anode 41 is integrally formed on one side, and the side facing away from the cylindrical anode 41 is a smooth plane.

[0034] Reference Figure 3 , Figure 10-15As shown, the inclined rib pad 3 is circular, and its diameter is equal to that of the anode cover plate 4 or the cathode cover plate 5. A central circular hole 32 is provided at the center of the inclined rib pad 3. Multiple inclined ribs 31 are arranged radially from the central circular hole 32 along the radial direction of the inclined rib pad 3. Between every two inclined ribs 31 is a flat fan-shaped surface, dividing the inclined rib pad 3 into multiple flat fan-shaped surfaces. Each fan-shaped surface has a racetrack-shaped opening 33 corresponding to the multiple inclined ribs 31, and the racetrack-shaped openings 33 are arranged radially. (Refer to...) Figure 13 As shown, the inclined rib 31 forms a groove 34 at a corresponding position on the other side of the inclined rib pad 3; refer to Figure 14 , 15 As shown, in some embodiments, the diagonal rib 31 is arched in an arc shape. Through this design, the heat generated by the battery cell 2 can be transferred outward through multiple racetrack-shaped openings 33. Furthermore, the radially arranged racetrack-shaped openings 33 ensure more uniform heat dissipation, preventing heat from concentrating excessively in a single area of ​​the battery cell 2. Simultaneously, the racetrack-shaped openings prevent the explosion-proof valve on the cover from being blocked by the diagonal rib pad 3. In the event of an explosion of the battery cell 2, the explosive force can be transferred to the explosion-proof valve through the racetrack-shaped openings 33. It should be noted that the diagonal rib pad of this invention is the result of the inventor's creative labor and is not common knowledge in the art or a technical means conventionally used by those skilled in the art.

[0035] Reference Figure 13 , Figure 15 As shown, the inclined rib pad 3 has one side that presses against the battery cell 2 and contacts the battery cell 2, while the side facing away from the inclined rib is in close contact with the smooth surface of the anode cover plate 4 or the cathode cover plate 5.

[0036] Reference Figure 1 , Figure 3 , Figure 9-11 As shown, an insulating pad is placed at one end of the aluminum shell 1 with a through hole. The cylindrical anode of the anode cover plate 4 protrudes from the surface of the aluminum shell 1 through the through hole. The anode cover plate 4 is insulated from the aluminum shell 1 by the insulating pad. The smooth surface of the anode cover plate 4 is in close contact with the inclined rib pad 3 and is connected to the battery cell 2 through the inclined rib pad 3.

[0037] Reference Figure 3 , Figure 6 , Figure 9The battery cell 2 has a central hole 24 extending through it along its central axis. This central hole 24 is collinear with a through hole at one end of the aluminum shell 1, and the central axis of the central hole 24 coincides with the central axis of the cylindrical electrodes 53 of the anode cover plate 4 and the cathode cover plate 5. This design prevents the battery cell 2 from directly impacting the sidewall of the aluminum shell 1 in the event of an explosion, ensuring the safety of the capacitor. Furthermore, the alignment of the central hole with the through hole of the aluminum shell 1 and the cylindrical electrodes 53 of the cathode cover plate 5 and the anode cover plate 4 facilitates heat dissipation through the cylindrical electrodes 53. Simultaneously, this design ensures overall balance in the capacitor design, facilitating production and reducing costs.

[0038] Another embodiment of the present invention is a method for manufacturing a current collector capacitor, comprising the following steps: Step S1: The coated foil is wound into a roll using a winding device to form a battery cell; wherein the foil has an edge extending beyond the edge of the battery cell. Step S2: The edge foil extending from the edge of the battery cell is pressed into the inside of the battery cell through the inclined rib pad. The pressed-in and collapsed form a tile-shaped overlapping slope. The inclined rib of the inclined rib pad is welded firmly to the slope by laser welding. The edge foil area that has not collapsed is directly pressed into contact with the planar area of ​​the inclined rib pad. Step S3: The side of the inclined rib pad away from the battery cell contacts the anode cover plate or cathode cover plate, and the capacitor electrode is led out through the anode cover plate or cathode cover plate.

[0039] In some embodiments, there are two inclined rib pads, which are respectively disposed at both ends of the battery cell; the anode cover plate and the cathode cover plate respectively abut against the inclined rib pads to lead out positive and negative electrodes from both ends of the battery cell.

[0040] This invention reduces the investment in battery cell flattening equipment by pressing the positive and negative tabs at both ends of the battery cell into the inclined rib pads, and avoids the adverse effects of elemental metal dust and burrs generated during the flattening machine operation on the battery cell.

[0041] It is understood that the above description is a further detailed explanation of the invention in conjunction with specific / preferred embodiments, and it should not be considered that the specific implementation of the invention is limited to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the inventive concept, and all such substitutions or modifications should be considered within the scope of protection of this patent. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the invention.

[0042] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of different embodiments or examples, without contradiction. Although embodiments of the invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications can be made herein without departing from the scope defined by the appended claims.

[0043] Furthermore, the scope of this invention is not intended to be limited to the specific embodiments of the processes, machines, manufactures, compositions of matter, means, methods, and steps described in the specification. Those skilled in the art will readily understand that existing or later-developed disclosures, processes, machines, manufactures, compositions of matter, means, methods, or steps that perform substantially the same function as the corresponding embodiments described herein or obtain substantially the same results as the embodiments described herein can be utilized. Therefore, the appended claims are intended to include such processes, machines, manufactures, compositions of matter, means, methods, or steps within their scope.

Claims

1. A current collector capacitor, characterized in that: The device includes an aluminum shell, a battery cell placed inside the aluminum shell, inclined rib pads disposed at both ends of the battery cell, and an anode cover plate and a cathode cover plate respectively installed at both ends of the aluminum shell. The aluminum shell has a receiving space for accommodating the battery cell, with one end open and the other end having a through hole. An annular stop portion is provided on the inner wall of the open end of the aluminum shell. The cathode cover plate is installed at the open end and stops the capacitor cathode through the stop portion. The anode cover plate is installed at the through hole end to lead out the capacitor anode. The inclined rib pads are circular, and the diameter of the inclined rib pads is equal to the diameter of the anode cover plate or the cathode cover plate. A central circular hole is provided at the center of the inclined rib pads, and multiple inclined ribs are arranged radially from the central circular hole along the radial direction of the inclined rib pads.

2. The current collector capacitor as described in claim 1, characterized in that: The battery cell includes an inner layer of electrolytic paper, a positive electrode aluminum foil, an intermediate layer of electrolytic paper, and a negative electrode aluminum foil; the positive electrode aluminum foil and the negative electrode aluminum foil are respectively provided with exposed edges, and the exposed edges form positive and negative tabs at both ends of the battery cell.

3. The current collector capacitor as described in claim 1, characterized in that: The anode cover plate is circular, with a cylindrical anode integrally formed on one side and a smooth flat surface on the side facing away from the cylindrical anode.

4. The current collector capacitor as described in claim 1, characterized in that: The cathode cover plate is in the shape of a second frustum, which includes a first frustum and a second frustum. A cylindrical cathode is disposed at the center of the side of the first frustum away from the second frustum.

5. The current collector capacitor as described in claim 1, characterized in that: The inclined rib pad is circular, and the diameter of the inclined rib pad is equal to the diameter of the anode cover plate or the cathode cover plate 5.

6. The current collector capacitor as described in claim 2, characterized in that: The positive electrode aluminum foil includes a positive electrode base aluminum foil and an exposed white edge extending from one end edge in the longitudinal direction of the positive electrode base aluminum foil; the negative electrode aluminum foil includes a negative electrode base aluminum foil and an exposed white edge extending from one end edge in the longitudinal direction of the negative electrode base aluminum foil.

7. The current collector capacitor as described in claim 3, characterized in that: The inclined rib pad has one side that presses against the battery cell and contacts the battery cell, while the side facing away from the inclined rib contacts the smooth surface of the anode cover plate or the cathode cover plate.

8. The current collector capacitor as described in claim 4, characterized in that: The diameter of the first frustum is larger than the diameter of the second frustum, the diameter of the second frustum is equal to the inner diameter of the aluminum shell, and the periphery of the first frustum abuts against the stop portion at the opening end of the aluminum shell.

9. The current collector capacitor as described in claim 4, characterized in that: The cathode cover is a metal cover, and the cylindrical cathode is integrally formed with the first frustum and the second frustum.

10. The current collector capacitor as described in claim 4, characterized in that: An explosion-proof valve is provided parallel to the cylindrical cathode and near the edge of the cathode cover plate.

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