Novel supercapacitor structure

Abstract

The utility model belongs to the field of super capacitors, and particularly relates to a novel super capacitor structure which comprises a cover plate assembly, an upper current collector, a roll core assembly, a lower current collector, a shell, a sleeve, a rubber plug and an aluminum plug, the upper current collector is welded at the bottom of the cover plate assembly, and two ends of the roll core assembly are respectively connected with the upper current collector and the lower current collector in a welding mode. The shell is arranged outside the roll core assembly in a sleeving manner and is connected with the lower current collector in a welding manner, and the sleeve is arranged outside the shell in a sleeving manner; a liquid injection hole is formed in the bottom of the shell, the rubber plug and the aluminum plug are sequentially plugged into the liquid injection hole, and the aluminum plug is connected with the edge of the bottom of the liquid injection hole in a welded mode. According to the super capacitor, the cylindrical structure is adopted, laser welding is adopted for internal connection, the internal resistance of the super capacitor can reach below 0.8 milliohm, the produced heat is less, the safety is higher, and compared with a curled edge sealing plugboard type structure, the super capacitor is better in vibration resistance and not prone to liquid leakage.

Description

Technical Field

[0001] This utility model belongs to the field of supercapacitor technology, specifically relating to a novel supercapacitor structure. Background Technology

[0002] Currently, most supercapacitors have a horn-shaped rolled edge sealing structure. Although this structure has low manufacturing cost, it is only suitable for use in environments with low vibration and temperature requirements. It is prone to leakage when used in harsh environments. Moreover, the internal electrical connection is a non-full-tab structure, which has high internal resistance and generates a lot of heat, making it unsuitable for some fields with high heat dissipation requirements. Therefore, in high-end fields such as automotive and military applications, there is an urgent need to develop a brand-new supercapacitor structure to meet the stringent requirements of high heat dissipation and strong vibration.

[0003] In view of this, the present invention provides a novel supercapacitor structure to meet the above requirements. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel supercapacitor structure, comprising a cover plate assembly, an upper current collector, a core assembly, a lower current collector, a shell, a sleeve, a rubber stopper, and an aluminum stopper. The upper current collector is welded to the bottom of the cover plate assembly. The two ends of the core assembly are welded to the upper current collector and the lower current collector, respectively. The shell is fitted over the core assembly and welded to the lower current collector. The sleeve is fitted over the shell.

[0005] The bottom of the outer shell is provided with a liquid injection hole, and the rubber plug and aluminum plug are inserted into the liquid injection hole in sequence. The aluminum plug is welded to the bottom edge of the liquid injection hole.

[0006] In a preferred embodiment of the novel supercapacitor structure of this utility model, the cover plate assembly includes a substrate, a through stepped hole is provided at the center of the substrate, a sealing ring is provided inside the stepped hole, a negative electrode post is sleeved inside the sealing ring, an insulating pad is attached to the bottom surface of the substrate, an adapter piece is attached to the bottom surface of the insulating pad, a gasket is also sleeved on the outer wall of the negative electrode post, and a pin is connected to the top surface of the substrate.

[0007] As a preferred embodiment of the novel supercapacitor structure of this utility model, the substrate is a plate-shaped structure with a first step at its edge that matches the opening end of the outer shell, and a chamfer is provided along the lower edge of the first step.

[0008] Preferably, as a novel structure of a supercapacitor of the present utility model, the insulating pad is in a disc-shaped structure, and a through hole adapted to the negative electrode column is provided at the center thereof. The transfer piece is in a plate-shaped structure, and a second step adapted to the upper current collector is provided at the edge thereof, and a first through hole adapted to the negative electrode column is provided at the center thereof, and a second through hole is further provided around the first through hole.

[0009] Preferably, as a novel structure of a supercapacitor of the present utility model, the cross section of the negative electrode column is in an "丄" shape, and a riveting portion is provided along the edge of the protruding end thereof, and a third step is further provided along the bottom edge thereof for pressing the sealing ring and connecting with the transfer piece.

[0010] Preferably, as a novel structure of a supercapacitor of the present utility model, a first groove is provided on the top surface of the substrate. The pin is in a "ji" shaped structure, and a welding foot for welding with the PCB board is provided on the top surface thereof. A boss for supporting the PCB board is further provided between adjacent welding feet. A convex block adapted to the first groove is further provided at the bottom of the pin, and the convex block is connected in the first groove.

[0011] Preferably, as a novel structure of a supercapacitor of the present utility model, the pin is in a triangular structure, the top angle thereof is bent inward to form a vertical welding foot, and a through hole for the negative electrode column to pass through is further provided at the center thereof. Bosses for supporting the PCB board are further provided on both sides of the welding foot.

[0012] Preferably, as a novel structure of a supercapacitor of the present utility model, the core assembly includes a core body and an isolation film. The core body is a cylindrical structure formed by winding a positive electrode sheet and a negative electrode sheet, and a high-temperature tape is wound on the outer wall thereof. The isolation film is arranged between the positive electrode sheet and the negative electrode sheet.

[0013] Preferably, as a novel structure of a supercapacitor of the present utility model, the core body is a full-pole-ear structure. The positive pole ear is located at the lower end of the core body and is welded and connected to the lower current collector. The negative pole ear is located at the upper end of the core body and is welded and connected to the upper current collector.

[0014] Preferably, as a novel structure of a supercapacitor of the present utility model, the outer shell is a single-pass cylindrical structure, a pressure relief valve is provided on the side surface thereof, and a third groove is provided at the bottom thereof.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The supercapacitor of the present utility model adopts a cylindrical structure, and all internal connections are made by laser welding. Its internal resistance can reach below 0.8 milliohms, with less heat generation and higher safety. At the same time, compared with the crimped-sealing plug-in plate structure, it has better vibration resistance and is not prone to liquid leakage. Description of the Drawings

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 4 This is a schematic cross-sectional view of the cover plate assembly of this utility model;

[0022] Figure 5 This is an exploded view of the cover plate assembly of this utility model;

[0023] Figure 6 This is a schematic diagram of the core assembly structure of this utility model;

[0024] Figure 7 This is a schematic diagram of the second shape structure of the pin of this utility model.

[0025] In the diagram: 1. Cover plate assembly; 11. Substrate; 111. First step; 112. Chamfer; 113. Stepped hole; 114. First groove; 12. Insulating pad; 13. Adapter piece; 131. First through hole; 132. Second through hole; 133. Second step; 14. Sealing ring; 141. Third through hole; 142. Second groove; 15. Negative electrode post; 151. Riveting part; 152. Third step; 16. Gasket; 17. Pin; 171. Boss; 172. Welding foot; 173. Protrusion; 2. Upper current collector; 3. Core assembly; 31. Positive electrode sheet; 32. Negative electrode sheet; 33. Separator; 34. High-temperature tape; 4. Lower current collector; 5. Housing; 51. Pressure relief valve; 52. Third groove; 53. Injection hole; 6. Sleeve; 7. Rubber stopper; 8. Aluminum stopper. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The utility model relates to a novel supercapacitor structure, as Figures 1-2 shown, which includes a cover plate assembly 1, an upper current collector 2, a wound core assembly 3, a lower current collector 4, a housing 5, a sleeve 6, a rubber plug 7 and an aluminum plug 8.

[0028] Among them, as Figures 4-5 shown, the cover plate assembly 1 is a combined structure, including a substrate 11, an insulating pad 12, a transfer piece 13, a sealing ring 14, a negative electrode post 15, a gasket 16 and a pin 17. The substrate 11 is a plate-like structure made of aluminum or steel. A through stepped hole 113 is opened at the center thereof for the installation of the negative electrode post 15 and the sealing ring 14. Three first grooves 114 are also opened at the top thereof for connection with the pin 17. At the same time, a first step 111 for assembling with the housing 5 is provided at the edge of the substrate 11, and a chamfer 112 is provided along the lower edge of the first step 111 to facilitate assembly into the housing 5.

[0029] Figure 5 shown, the insulating pad 12 is a circular sheet structure made of special engineering plastics such as PPS, PEEK, PI, etc. A through hole is opened at the center thereof, and the through hole is adapted to the negative electrode post 15 for the penetration of the negative electrode post 15; the transfer piece 13 is a plate-like structure, a second step 133 adapted to the upper current collector 2 is opened at the edge thereof, a first through hole 131 is opened at the center, and a second through hole 132 is also opened around the first through hole 131;

[0030] As Figure 4 shown, the sealing ring 14 is circular, sleeved on the negative electrode post 15, a third through hole 141 is opened at the center thereof, and an annular second groove 142 is opened around its circular outer surface; the negative electrode post 15 is a columnar structure, and its cross section is in an "丄" shape. A riveting part 151 is provided along the edge of its protruding end, and a third step 152 is also provided along the bottom edge thereof for pressing the sealing ring 14 and connecting with the transfer piece 13; the gasket 16 is a circular sheet structure made of steel or aluminum, a through hole is opened in the middle, and it is sleeved between the riveting part 151 and the sealing ring 14.

[0031] In addition, as Figure 5 shown, the pin 17 is in a "ㄥ" shape structure. Three welding feet 172 for welding with the PCB board are provided on the top surface thereof. A boss 171 for supporting the PCB board is provided between adjacent welding feet 172. A convex block 173 for connecting with the first groove 114 is also provided at the bottom of the pin 17; in addition to being in a "ㄥ" shape structure, the pin 17 can also be triangular, as Figure 7 shown, the triangular top angle is bent inward to form a vertical welding foot 172 for PCB board welding. A through hole for the negative electrode post 15 to pass through is opened at the center thereof to avoid the negative electrode post 15. Bosses 171 for supporting the PCB board are provided on both sides of the welding foot 172.

[0032] Secondly, the upper current collector 2 is a bowl-shaped structure made of aluminum or copper, and has openings. Its upper edge is laser-welded to the second step 133 of the adapter piece 13; for example... Figure 6 As shown, the core assembly 3 includes a core body and a separator 33. The core body is a cylindrical structure, consisting of a positive electrode sheet 31 and a negative electrode sheet 32 ​​wound together by a winding method. The core assembly 3 has a full tab structure. The positive electrode tab is located at the lower end of the core body and is connected to the lower current collector 4 by laser welding. The negative electrode tab is located at the upper part of the core body and is also connected to the upper current collector 2 by laser welding. A separator 33 is provided between the positive and negative electrode sheets of the core body 3. High-temperature tape 34 is wound around the upper part of the core assembly.

[0033] Furthermore, such as Figures 2-3 As shown, the outer shell 5 is a single-through cylindrical structure made of aluminum or steel. Its outer side is provided with a linear pressure relief valve 51. A third groove 52 and a liquid injection hole 53 are opened at its bottom. A rubber stopper 7 made of EPDM or fluororubber and an aluminum stopper 8 are sequentially inserted into the upper and lower parts of the liquid injection hole 53. Then, the aluminum stopper 8 is welded to the bottom edge of the liquid injection hole 53. The lower manifold 4 is a plate-shaped structure made of aluminum with an opening in its center. Its lower surface is laser-welded to the third groove 52 of the outer shell 5. The sleeve 6 is made of PVC, PET, PI or UV-coated materials and is fitted onto the surface of the outer shell 5.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel supercapacitor structure, comprising a cover plate assembly (1), an upper current collector (2), a core assembly (3), a lower current collector (4), a housing (5), a sleeve (6), a rubber stopper (7), and an aluminum stopper (8), characterized in that: The upper current collector (2) is welded to the bottom of the cover plate assembly (1). Both ends of the core assembly (3) are respectively welded and connected to the upper current collector (2) and the lower current collector (4). The outer shell (5) is sleeved outside the core assembly (3) and is welded and connected to the lower current collector (4). The sleeve (6) is sleeved outside the outer shell (5). A liquid injection hole (53) is provided at the bottom of the outer shell (5). The rubber plug (7) and the aluminum plug (8) are sequentially inserted into the liquid injection hole (53). The aluminum plug (8) is welded and connected to the bottom edge of the liquid injection hole (53).

2. The novel supercapacitor structure according to claim 1, characterized in that: The cover plate assembly (1) includes a substrate (11). A through stepped hole (113) is formed at the center of the substrate (11). A sealing ring (14) is provided inside the stepped hole (113). A negative electrode column (15) is sleeved inside the sealing ring (14). An insulating pad (12) is adhesively disposed on the bottom surface of the substrate (11). A transfer piece (13) is adhesively disposed on the bottom surface of the insulating pad (12). A gasket (16) is further sleeved on the outer wall of the negative electrode column (15). A lead (17) is connected to the top surface of the substrate (11).

3. The novel supercapacitor structure according to claim 2, characterized in that: The substrate (11) is in a plate-like structure. A first step (111) adapted to the open end of the outer shell (5) is formed at its edge, and a chamfer (112) is further provided along the lower edge of the first step (111).

4. The novel supercapacitor structure according to claim 2, characterized in that: The insulating pad (12) is in a circular plate-like structure. A through hole adapted to the negative electrode column (15) is formed at its center. The transfer piece (13) is in a plate-like structure. A second step (133) adapted to the upper current collector (2) is formed at its edge, and a first through hole (131) adapted to the negative electrode column (15) is formed at its center. A second through hole (132) is further formed around the first through hole (131).

5. A novel supercapacitor structure according to claim 2, characterized in that: The cross section of the negative electrode column (15) is in an "丄” shape. A riveting portion (151) is provided along the edge of its protruding end, and a third step (152) is further provided along the bottom edge thereof for pressing the sealing ring (14) and connecting to the transfer piece (13).

6. The novel supercapacitor structure according to claim 2, characterized in that: A first groove (114) is formed on the top surface of the substrate (11). The lead (17) is in a "几” shape structure. A welding foot (172) for welding to the PCB board is provided on its top surface. A boss (171) for supporting the PCB board is provided between adjacent welding feet (172). A convex block (173) adapted to the first groove (114) is further provided at the bottom of the lead (17). The convex block (173) is connected in the first groove (114).

7. A novel supercapacitor structure according to claim 2, characterized in that: The lead (17) is in a triangular structure. Its top angle is bent inward to form a vertical welding foot (172). A through hole for the negative electrode column (15) to pass through is formed at its center. Bosses (171) for supporting the PCB board are provided on both sides of the welding foot (172).

8. A novel supercapacitor structure according to claim 1 or 2, characterized in that: The core assembly (3) includes a core body and a separator (33). The core body is a cylindrical structure formed by winding a positive electrode sheet (31) and a negative electrode sheet (32), and its outer wall is wrapped with high-temperature tape (34). The separator (33) is disposed between the positive electrode sheet (31) and the negative electrode sheet (32).

9. A novel supercapacitor structure according to claim 8, characterized in that: The core body has a full tab structure, with its positive tab located at the lower end of the core body and welded to the lower current collector (4), and its negative tab located at the upper end of the core body and welded to the upper current collector (2).

10. A novel supercapacitor structure according to claim 9, characterized in that: The outer shell (5) is a single-pass cylindrical structure with a pressure relief valve (51) on its side and a third groove (52) at its bottom.

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