A high-performance supercapacitor with an aluminum electrolytic capacitor structure

Abstract

This invention relates to the field of capacitors and discloses a high-performance supercapacitor with an aluminum electrolytic capacitor structure. The supercapacitor includes a capacitor shell, a capacitor top cover mounted on the top of the shell, a cover body mounted on the top of the shell, a central positioning component mounted on the bottom of the cover body, and a support mounting component at the bottom of the central positioning component. The central positioning component includes a fixedly mounted positioning post, with symmetrically formed longitudinal flow grooves inside the positioning post. A connecting groove is formed at the bottom of the longitudinal flow grooves, extending to the bottom of the positioning post. In this invention, after the battery cell body is fitted onto the outside of the positioning post, the two tabs are electrically connected to the two leads respectively. Simultaneously, a support mounting component is installed at the bottom of the positioning post to limit the positioning of the battery cell body. Then, the cover body is installed on top of the shell. Installation can be completed in three steps, improving ease of installation.

Description

Technical Field

[0001] This invention belongs to the field of capacitors, specifically a high-performance supercapacitor with an aluminum electrolytic capacitor structure. Background Technology

[0002] With the rapid development of new energy, power electronics, and electric vehicles, the performance requirements for energy storage devices are constantly increasing. High-performance supercapacitors, due to their advantages of fast charging and discharging speed, long cycle life, and high power density, have become one of the core energy storage devices in this field. Among them, high-performance supercapacitors with aluminum electrolytic capacitor structures combine the structural stability and low cost advantages of traditional aluminum electrolytic capacitors with the high energy storage characteristics of supercapacitors. Through the winding assembly of anode aluminum foil, cathode aluminum foil, separator, and electrolyte, they achieve efficient energy storage and rapid release, and are widely used in various scenarios requiring high-frequency charging and discharging and instantaneous high-power output. Due to the interaction between electrode materials, electrolyte, and separator, electrical energy is converted into heat energy. Especially under high-frequency charging and discharging and high-power output conditions, a large amount of heat will accumulate rapidly inside, causing the internal temperature of the device to rise. To solve the above heat dissipation problem, existing technologies usually use heat dissipation equipment on the outside of the capacitor shell. Common external heat dissipation structures mainly include adding heat dissipation fins to the outer wall of the shell, attaching heat dissipation fins, or setting cooling fans and cooling pipes on the outside of the shell. However, the following defects still exist:

[0003] The heat of a supercapacitor is mainly generated in the internal wound core, such as the contact area between the anode aluminum foil, cathode aluminum foil and the electrolyte. In the existing external heat dissipation methods, the heat needs to be transferred from the internal core to the inner wall of the capacitor's aluminum shell, then conducted through the aluminum shell to the external heat dissipation equipment, and finally dissipated into the surrounding environment. The entire heat transfer process involves multiple layers of dielectric conduction, resulting in a large thermal resistance. This causes the heat in the internal core area to be unable to be quickly dissipated, and the heat tends to accumulate inside the core, forming a "hot inside, cool outside" phenomenon, which fails to achieve effective cooling of the core area. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a high-performance supercapacitor with an aluminum electrolytic capacitor structure, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-performance supercapacitor with an aluminum electrolytic capacitor structure, comprising a capacitor shell, wherein a capacitor top cover is installed on the top of the capacitor shell;

[0006] The capacitor top cover includes a cover body installed on the top of the capacitor shell, a central positioning component installed at the bottom of the cover body, and a support mounting component provided at the bottom of the central positioning component.

[0007] The central positioning component includes a positioning pin that is fixedly installed. The positioning pin has longitudinal flow grooves symmetrically opened inside. A connecting groove is opened at the bottom end of the longitudinal flow groove and extends through to the bottom end of the positioning pin.

[0008] The support mounting component includes a support base plate located below the positioning pin. A support heat-conducting plate is installed at an equal angle on the top of the support base plate. Two fixing tubes are symmetrically installed on the top of the support base plate. The two fixing tubes are inserted into two connecting slots respectively. A spiral heat dissipation groove is opened inside the support base plate. The two ends of the spiral heat dissipation groove are connected to the two fixing tubes respectively. A battery cell assembly is set on the top of the support heat-conducting plate.

[0009] Preferably, the bottom end of the positioning pin has two symmetrically formed connecting screw grooves, and two connecting screws are symmetrically installed on the support base plate, with the connecting screws threadedly connected to the connecting screw grooves.

[0010] Preferably, the top ends of the two longitudinal flow channels extend to the top of the cover, a micro fan is fixedly installed on the top of the cover, the micro fan is connected to the top of one of the longitudinal flow channels, an exhaust pipe is fixedly installed on the top of the cover, the exhaust pipe is connected to the top of the other longitudinal flow channel, and an auxiliary fixing component is connected to the other end of the exhaust pipe.

[0011] Preferably, a sealing ring is installed at the bottom of the cover, positioning screws are provided at equal angles on the cover, and two pins are symmetrically installed at the top of the cover.

[0012] Preferably, the auxiliary fixing component includes an annular box sleeved outside the capacitor shell, one end of the exhaust pipe is fixedly connected to the top of the annular box, a piston ring is movably installed inside the annular box, a support spring is installed at the bottom end of the piston ring at equal angles, the bottom end of the support spring is fixedly connected to the inner bottom wall of the annular box, and an exhaust hole is opened at equal angles on the side of the annular box away from the capacitor shell, and the exhaust hole is connected to the inner cavity of the annular box.

[0013] Preferably, the inner side of the annular box is provided with guide grooves at equal angles. The guide grooves are located below the piston rings. A guide groove is movably installed on the inner side of the guide groove. A connecting rod is hinged to one end of the guide groove inside the annular box. The top end of the connecting rod is hinged to the bottom wall of the piston ring.

[0014] Preferably, the capacitor housing includes a housing, a sealing groove is provided at the top of the housing, a sealing ring is installed inside the sealing groove, and a positioning screw groove is provided at equal angles on the inner bottom wall of the sealing groove. The positioning screw corresponds to the positioning screw groove one by one, and the positioning screw is threadedly connected to the positioning screw groove.

[0015] Preferably, the annular box is sleeved and installed on the outside of the housing, and the housing has slots at equal angles on its circumference, with each slot corresponding to a locking rod.

[0016] Preferably, the battery cell assembly includes a battery cell body, which is sleeved and installed on the outside of the central positioning member. Each supporting heat-conducting plate supports the battery cell body and completes heat conduction. Two tabs are symmetrically installed on the top of the battery cell body. The battery cell body is formed by winding the anode aluminum foil, separator paper, cathode aluminum foil, and separator paper at intervals. The two tabs are respectively connected to the anode aluminum foil and the cathode aluminum foil to form the anode tab and the cathode tab, respectively. Two pins are respectively electrically connected to the anode tab and the cathode tab to form the positive and negative terminals of the capacitor.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) In this invention, after the battery cell body is sleeved on the outside of the positioning post, the two tabs are electrically connected to the two pins respectively. At the same time, a support mounting piece is installed at the bottom of the positioning post to limit the battery cell body. Then the cover is installed on the top of the housing. The installation can be completed in three steps, which improves the ease of installation.

[0019] (2) In this invention, multiple support heat-conducting plates arranged at equal angles support the cell body. On the one hand, the support heat-conducting plates conduct heat to the cell body, which facilitates cooling of the cell body during the capacitor process. On the other hand, it facilitates contact between the bottom of the cell body and the electrolyte, thereby improving the electrolysis effect.

[0020] (3) In this invention, when the support base plate is installed, two fixed tubes are inserted into the two connecting slots respectively, so that the two longitudinal flow slots, the two fixed tubes and the spiral heat dissipation slots form a heat dissipation flow channel. The air is driven by a micro fan to flow along the heat dissipation flow channel, which facilitates heat dissipation and cooling from inside the capacitor and improves the heat dissipation effect.

[0021] (4) In this invention, hot air is discharged from the exhaust pipe and enters the annular box, pushing the piston ring inside the annular box to move downward, exposing the exhaust hole and facilitating exhaust. The downward movement of the piston ring pushes each locking rod toward the housing and into the corresponding locking groove, improving the installation stability of the equipment during the heat dissipation process. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0023] In the attached diagram:

[0024] Figure 1 This is a schematic diagram of the high-performance supercapacitor structure of the aluminum electrolytic capacitor structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the capacitor shell and capacitor top cover structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the capacitor shell structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the battery cell assembly structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the capacitor top cover structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the support and mounting structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the supporting base plate structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the auxiliary fastener structure of the present invention;

[0032] Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle;

[0033] In the diagram: 1. Capacitor shell; 11. Shell; 12. Sealing groove; 13. Positioning screw groove; 14. Slot; 2. Capacitor top cover; 21. Cover body; 22. Sealing ring; 23. Positioning screw; 24. Pin; 25. Central positioning component; 251. Positioning post; 252. Longitudinal flow groove; 253. Connecting groove; 254. Miniature fan; 255. Exhaust pipe; 26. Support mounting component; 261. Support base plate; 262. Support heat conduction plate; 263. Connecting screw groove; 264. Connecting screw; 265. Fixing tube; 266. Spiral heat dissipation groove; 27. Auxiliary fixing component; 271. Annular box; 272. Piston ring; 273. Support spring; 274. Guide groove; 275. Locking rod; 276. Connecting rod; 277. Exhaust hole; 3. Cell assembly; 31. Cell body; 32. Tab. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] Example 1, by Figures 1-2 The present invention relates to a high-performance supercapacitor with an aluminum electrolytic capacitor structure, comprising a capacitor shell 1, and a capacitor top cover 2 mounted on the top of the capacitor shell 1.

[0036] Depend on Figures 5-9As shown, the capacitor top cover 2 includes a cover body 21 installed on the top of the capacitor shell 1. A central positioning member 25 is installed at the bottom of the cover body 21. A support mounting member 26 is provided at the bottom of the central positioning member 25. A sealing ring 22 is installed at the bottom of the cover body 21. Positioning screws 23 are provided at equal angles on the cover body 21. Two pins 24 are symmetrically installed at the top of the cover body 21.

[0037] The central positioning component 25 includes a positioning pin 251 fixedly installed. The positioning pin 251 has symmetrically opened longitudinal flow grooves 252 inside. The bottom end of the longitudinal flow groove 252 has a connecting groove 253. The connecting groove 253 extends to the bottom end of the positioning pin 251. The top ends of the two longitudinal flow grooves 252 extend to the top of the cover 21. A micro fan 254 is fixedly installed on the top end of the cover 21. The micro fan 254 is connected to the top end of one of the longitudinal flow grooves 252. An exhaust pipe 255 is fixedly installed on the top end of the cover 21. The exhaust pipe 255 is connected to the top end of the other longitudinal flow groove 252. An auxiliary fixing component 27 is connected to the other end of the exhaust pipe 255.

[0038] The support mounting component 26 includes a support base plate 261 disposed below the positioning pin 251. A support heat-conducting plate 262 is installed at an equal angle on the top of the support base plate 261. Two fixing pipes 265 are symmetrically installed on the top of the support base plate 261, and the two fixing pipes 265 are respectively inserted into two connecting slots 253. A spiral heat dissipation groove 266 is formed inside the support base plate 261. During installation, the two fixing pipes 265 are inserted into the two connecting slots 253, so that the two longitudinal flow grooves 252, the two fixing pipes 265, and the spiral heat dissipation groove 266 form a heat dissipation channel. A micro fan 254 drives air to circulate along the heat dissipation channel, facilitating... To dissipate heat and cool the capacitor, the two ends of the spiral heat dissipation groove 266 are connected to two fixed tubes 265 respectively. The top of the supporting heat-conducting plate 262 is provided with the cell assembly 3. The bottom end of the positioning plug 251 is symmetrically provided with two connecting screw grooves 263. Two connecting screws 264 are symmetrically installed on the supporting base plate 261. The connecting screws 264 are threadedly connected to the connecting screw grooves 263. Multiple supporting heat-conducting plates 262 arranged at equal angles support the cell assembly 3. On the one hand, the supporting heat-conducting plates 262 conduct heat to the cell assembly 3, which facilitates the cooling of the cell assembly 3 during the capacitor process. On the other hand, it facilitates the contact between the bottom of the cell assembly 3 and the electrolyte, improving the electrolysis effect.

[0039] The auxiliary fixing component 27 includes an annular box 271 sleeved on the outside of the capacitor shell 1. One end of the exhaust pipe 255 is fixedly connected to the top of the annular box 271. A piston ring 272 is movably installed inside the annular box 271. A support spring 273 is installed at equal angles at the bottom end of the piston ring 272. The bottom end of the support spring 273 is fixedly connected to the inner bottom wall of the annular box 271. An exhaust hole 277 is opened at equal angles on the side of the annular box 271 away from the capacitor shell 1. The exhaust hole 277 communicates with the inner cavity of the annular box 271. A guide groove 274 is opened at equal angles on the inner side of the annular box 271. The guide groove 274 is located on the movable side of the annular box 271. Below the piston ring 272, a guide groove 274 is movably installed on the inner side of the guide groove 274. A connecting rod 276 is hinged to one end of the guide groove 274 inside the annular box 271. The top end of the connecting rod 276 is hinged to the bottom wall of the piston ring 272. When hot air is discharged from the exhaust pipe 255, it enters the annular box 271 and pushes the piston ring 272 inside the annular box 271 to move downward, so that the exhaust hole 277 is exposed to facilitate exhaust. The downward movement of the piston ring 272 pushes each locking rod 275 to move towards the housing 11 and engage into the corresponding locking groove 14, thereby improving the installation stability of the equipment during heat dissipation.

[0040] Depend on Figure 2 As shown, the capacitor housing 1 includes a housing 11, a sealing groove 12 is provided at the top of the housing 11, a sealing ring 22 is installed inside the sealing groove 12, a positioning screw groove 13 is provided at equal angles on the inner bottom wall of the sealing groove 12, a positioning screw 23 corresponds to the positioning screw groove 13 one by one, and the positioning screw 23 is threadedly connected to the positioning screw groove 13, and a retaining groove 14 is provided at equal angles on the circumference of the housing 11, and the retaining groove 14 corresponds to the retaining rod 275 one by one.

[0041] Depend on Figure 4 The battery cell assembly 3 includes a battery cell body 31, which is fitted onto the outside of the central positioning member 25. Each supporting heat-conducting plate 262 supports the battery cell body 31 and completes heat conduction. Two tabs 32 are symmetrically installed on the top of the battery cell body 31. The battery cell body 31 is formed by winding the anode aluminum foil, separator paper, cathode aluminum foil, and separator paper at intervals. The two tabs 32 are respectively connected to the anode aluminum foil and the cathode aluminum foil to form the anode tab and the cathode tab, respectively. Two pins 24 are respectively electrically connected to the anode tab and the cathode tab to form the positive and negative terminals of the capacitor. After the battery cell body 31 is fitted onto the outside of the positioning post 251, the two tabs 32 are electrically connected to the two pins 24, respectively. At the same time, a supporting mounting member 26 is installed at the bottom of the positioning post 251 to limit the battery cell body 31. Then, the cover 21 is installed on the top of the housing 11. The installation can be completed in three steps, which improves the ease of installation.

[0042] Working principle: During assembly, the battery cell body 31 is fitted onto the positioning post 251, and the two tabs 32 on the battery cell body 31 are electrically connected to the two pins 24 respectively.

[0043] Then, a support base plate 261 is installed at the bottom of the positioning pin 251. The two fixing tubes 265 on the support base plate 261 are inserted into the two connecting slots 253 respectively. Then, the positioning pin 251 and the support base plate 261 are fixed by connecting screws 264 and connecting screw slots 263.

[0044] Then, the lower part of the cover 21 is placed into the housing 11, and the sealing ring 22 is inserted into the sealing groove 12. The positioning screw 23 is threaded into the positioning screw groove 13 to complete the fixation, thereby realizing the installation.

[0045] During use, when the capacitor heats up due to operation, the micro fan 254 is turned on, which drives the outside air through the longitudinal flow groove 252 and the fixed pipe 265 on one side into the spiral heat dissipation groove 266, and then discharges it from the fixed pipe 265 and the longitudinal flow groove 252 on the other side. Since the bottom of the cell body 31 is in contact with multiple support heat conduction plates 262 arranged at equal angles, on the one hand, it is convenient to conduct heat and cool down the cell body 31, and on the other hand, it is convenient for the electrolyte inside the shell 11 to contact the bottom of the cell body 31, thereby improving the electrolysis reaction effect.

[0046] When hot air is discharged, it enters the annular box 271 through the exhaust pipe 255, generating a thrust on the piston ring 272 inside the annular box 271, pushing the piston ring 272 downward until the exhaust port 277 is exposed, allowing hot air to be discharged from the guide groove 274. As the piston ring 272 moves downward, it pushes the locking rod 275 towards the housing 11 through the connecting rods 276, causing the locking rod 275 to engage in the locking groove 14, improving the connection strength between the housing 11 and the cover 21 during heat dissipation and improving the stability of use.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-performance supercapacitor with an aluminum electrolytic capacitor structure, comprising a capacitor casing (1), characterized in that: The capacitor casing (1) is fitted with a capacitor top cover (2) at its top. The capacitor top cover (2) includes a cover (21) installed on the top of the capacitor shell (1), a central positioning member (25) is installed at the bottom of the cover (21), and a support mounting member (26) is provided at the bottom of the central positioning member (25). The middle positioning component (25) includes a positioning pin (251) fixedly installed. The positioning pin (251) has longitudinal flow grooves (252) symmetrically opened inside. The bottom end of the longitudinal flow groove (252) has a connecting groove (253) that extends through to the bottom end of the positioning pin (251). The support mounting component (26) includes a support base plate (261) located below the positioning pin (251). A support heat-conducting plate (262) is installed at the top of the support base plate (261) at equal angles. Two fixing tubes (265) are symmetrically installed at the top of the support base plate (261). The two fixing tubes (265) are respectively inserted into the two connecting slots (253). A spiral heat dissipation groove (266) is opened inside the support base plate (261). The two ends of the spiral heat dissipation groove (266) are respectively connected to the two fixing tubes (265). A battery cell assembly (3) is provided at the top of the support heat-conducting plate (262).

2. The high-performance supercapacitor with an aluminum electrolytic capacitor structure according to claim 1, characterized in that: The bottom end of the positioning pin (251) has two symmetrical connecting screw grooves (263), and two connecting screws (264) are symmetrically installed on the support base plate (261). The connecting screws (264) are threadedly connected to the connecting screw grooves (263).

3. A high-performance supercapacitor with an aluminum electrolytic capacitor structure according to claim 1, characterized in that: The top ends of the two longitudinal flow channels (252) extend to the top of the cover (21). A miniature fan (254) is fixedly installed on the top end of the cover (21). The miniature fan (254) is connected to the top end of one of the longitudinal flow channels (252). An exhaust pipe (255) is fixedly installed on the top end of the cover (21). The exhaust pipe (255) is connected to the top end of the other longitudinal flow channel (252). An auxiliary fixing piece (27) is connected to the other end of the exhaust pipe (255).

4. A high-performance supercapacitor with an aluminum electrolytic capacitor structure according to claim 1, characterized in that: A sealing ring (22) is installed at the bottom of the cover (21), and positioning screws (23) are set at equal angles on the cover (21). Two pins (24) are symmetrically installed at the top of the cover (21).

5. A high-performance supercapacitor with an aluminum electrolytic capacitor structure according to claim 3, characterized in that: The auxiliary fixing component (27) includes an annular box (271) sleeved on the outside of the capacitor shell (1). One end of the exhaust pipe (255) is fixedly connected to the top of the annular box (271). A piston ring (272) is movably installed inside the annular box (271). A support spring (273) is installed at the bottom of the piston ring (272) at equal angles. The bottom of the support spring (273) is fixedly connected to the inner bottom wall of the annular box (271). An exhaust hole (277) is opened at equal angles on the side of the annular box (271) away from the capacitor shell (1). The exhaust hole (277) is connected to the inner cavity of the annular box (271).

6. A high-performance supercapacitor with an aluminum electrolytic capacitor structure according to claim 5, characterized in that: The inner side of the annular box (271) is provided with guide grooves (274) at equal angles. The guide grooves (274) are located below the piston ring (272). The guide grooves (274) are movably installed on the inner side of the guide grooves (274). A connecting rod (276) is hinged to one end of the guide grooves (274) inside the annular box (271). The top end of the connecting rod (276) is hinged to the bottom wall of the piston ring (272).

7. A high-performance supercapacitor with an aluminum electrolytic capacitor structure according to claim 1, characterized in that: The capacitor housing (1) includes a housing (11), a sealing groove (12) is provided at the top of the housing (11), a sealing ring (22) is installed inside the sealing groove (12), and a positioning screw groove (13) is provided at equal angles on the inner bottom wall of the sealing groove (12). The positioning screw (23) corresponds to the positioning screw groove (13) one by one, and the positioning screw (23) is threadedly connected to the positioning screw groove (13).

8. A high-performance supercapacitor with an aluminum electrolytic capacitor structure according to claim 7, characterized in that: The annular box (271) is fitted onto the outside of the shell (11). The shell (11) has slots (14) at equal angles on its circumference, and the slots (14) correspond one-to-one with the locking rods (275).

9. A high-performance supercapacitor with an aluminum electrolytic capacitor structure according to claim 1, characterized in that: The battery cell assembly (3) includes a battery cell body (31), which is sleeved and installed on the outside of the central positioning member (25). Each supporting heat conduction plate (262) supports the battery cell body (31) and completes heat conduction. Two tabs (32) are symmetrically installed on the top of the battery cell body (31). The battery cell body (31) is formed by winding the anode aluminum foil, separator paper, cathode aluminum foil and separator paper at intervals. The two tabs (32) are respectively connected to the anode aluminum foil and the cathode aluminum foil to form the anode tab and the cathode tab respectively. The two pins (24) are respectively electrically connected to the anode tab and the cathode tab to form the positive and negative poles of the capacitor.

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