Aluminum electrolytic capacitor for new energy automobile

Abstract

The invention belongs to the technical field of aluminum electrolytic capacitors, and particularly discloses an aluminum electrolytic capacitor for a new energy automobile, which comprises an aluminum capacitor shell, a support ring is fixed at the bottom of the aluminum capacitor shell close to the edge of the outer surface, a sealing cover plate is arranged between the inner walls of the support ring, and a cylindrical cavity is formed in the sealing cover plate; according to the invention, through the drainage assembly, when high pressure is generated in the aluminum capacitor shell, corrosive liquid in the aluminum capacitor shell can be led out to a neutralizing solution to be neutralized and then discharged, meanwhile, the high pressure is released, explosion and combustion are avoided, meanwhile, the electric lap joint assembly is triggered to cut off the electric connection part of the pin, and the alarm lamp is triggered to give an alarm; the position of a fault capacitor can be rapidly determined subsequently for maintenance and overhaul, the feedback protection assembly can be triggered to position the aluminum capacitor shell while the electrical connection part of the pin is cut off, and the aluminum capacitor shell is prevented from inclining and falling off due to instability caused by expansion.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aluminum electrolytic capacitor, and particularly to an aluminum electrolytic capacitor for new energy vehicles. BACKGROUND

[0002] The aluminum electrolytic capacitor is generally composed of a core package of positive and negative aluminum foils and electrolytic paper, a cylindrical aluminum shell and a sealing cover plate with positive and negative terminal posts, wherein the cover plate is provided with positive and negative terminal post lead-out holes, and the positive and negative terminal posts are installed on the cover plate through the through holes.

[0003] When the aluminum electrolytic capacitor is used as a power supply in a new energy vehicle, the internal corrosive electrolytic material in the aluminum electrolytic capacitor can easily cause harm to the surrounding facilities and cause a fire when the vehicle is hit to cause the capacitor to break or the capacitor itself fails. SUMMARY

[0004] The present application provides an aluminum electrolytic capacitor for new energy vehicles to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: an aluminum electrolytic capacitor for new energy vehicles, comprising an aluminum capacitor shell, a support ring is fixed at the bottom of the aluminum capacitor shell near the outer surface edge, a sealing cover plate is arranged between the inner walls of the support ring, a cylindrical cavity is formed in the inside of the sealing cover plate, a through hole penetrating into the cylindrical cavity is formed in the top of the aluminum capacitor shell, a buffer cavity is formed in the inside of the aluminum capacitor shell near the top edge, a drainage assembly is arranged in the inside of the buffer cavity, and a plurality of strip-shaped grooves are formed in the inside bottom surface of the buffer cavity. An annular cavity is formed in the inside of the aluminum capacitor shell, an action cavity is formed in the inside of the aluminum capacitor shell at the bottom, an electrically connected assembly is arranged in the inside of the action cavity, and a feedback protection assembly is arranged in the inside of the sealing cover plate.

[0006] Preferably, a cathode foil is arranged in the inside of the annular cavity, an electrolytic paper is arranged on one side of the cathode foil, an anode foil is arranged on one side of the electrolytic paper, the cathode foil, the electrolytic paper and the anode foil are arranged in a coiled manner in the inside of the annular cavity, and a heat shrink tube sleeve is arranged on the outer surface of the aluminum capacitor shell.

[0007] Preferably, the electrical jumper assembly includes a guide rod, which is slidably connected to the inside of the through hole, an alarm light is fixed to the top of the aluminum capacitor shell, and jumper contacts are fixed on the inner walls of both sides of the through hole near the top edge, and connecting wires are provided on one side of the two jumper contacts, and one end of the two connecting wires is correspondingly connected to the alarm light, and copper patches are fixed on the outer surfaces of both sides of the guide rod near the top edge, and the outer surfaces of one side of the two copper patches are correspondingly in contact with the outer surfaces of the jumper contacts.

[0008] Preferably, an anode electrode is provided on the inner bottom surface of the annular cavity, and a cathode electrode is provided on the inner bottom surface of the annular cavity close to the anode electrode. The bottoms of the anode electrode and the cathode electrode are both extended to the inner top surface of the action cavity. Two pins extending into the action cavity are fixed to the bottom of the sealing cover plate, the top of one of the pins is fixed to the bottom of the anode electrode, and the top of the other pin is fixed to a contact block. A constraint ring is fixed to the outer surface of the guide rod located inside the action cavity, and copper spring sheets are fixed to the outer surfaces of both sides of the constraint ring, one end of one of the copper spring sheets is fixed to the bottom of the cathode electrode, and one end of the other copper spring sheet is in contact with the top of the contact block. Lapping wires are fixed to one side of the bottom of the cathode electrode and one side of the bottom of the anode electrode, and one end of the two lapping wires are respectively connected to the copper patches.

[0009] Preferably, the drainage assembly includes an elastic circular arc piece, which is fixed between the inner walls of the buffer cavity, and the outer surface of the guide rod is provided with an annular limiting opening, and the inner side of the elastic circular arc piece is engaged with the inside of the annular limiting opening, and an annular neutralization cavity is provided inside the aluminum capacitor shell near the bottom edge, and an annular plate is fixed in the middle between the inner walls of the annular neutralization cavity.

[0010] Preferably, guide channels are provided on the inner walls on both sides of the through hole near the top edge, and the bottom ends of the two guide channels pass through the inner bottom surface of the annular neutralization cavity respectively, and bent flow channels are provided on the inside of the guide rod near the edges on both sides, and both ends of the bent flow channels pass through the outer surface of the guide rod.

[0011] Preferably, a conical block is provided inside the cylindrical cavity, the top of the conical block and the top of the guide rod are fixed to each other, side cavities are opened inside the sealing cover near the edges on both sides, side openings that penetrate into the inside of the side cavities are opened on both sides of the cylindrical cavity, and conduits connected to the inside of the annular neutralizing cavity are fixed on the inner walls of both sides of the action cavity near the top edge, the bottoms of the two conduits are correspondingly connected to the internal top surface of the side cavity, and eardrums are provided between the inner walls of the two conduits near the top edge.

[0012] Preferably, a sealing partition is slidably fitted on the inner wall of one side of the side cavity, one side of the sealing partition is opposite to one end of the side opening, and the bottom of the sealing partition extends to the inner bottom surface of the side cavity, and a bending hole is provided on the inner wall of one side of the side cavity at the bottom edge, one end of the bending hole passes through to the outside of the sealing cover plate, and the connecting part between the bending hole and the side cavity is fitted with the sealing partition, a connecting plate is provided inside the side opening, one end of the connecting plate is fixed on the sealing partition, and the other end of the connecting plate is fixed on the outer surface of the conical block.

[0013] Preferably, the feedback protection assembly includes a push rod, a reciprocating cavity is opened inside the sealing cover plate, the push rod is arranged inside the reciprocating cavity, one end of the push rod passes through the interior of the cylindrical cavity, and one end of the push rod is in contact with the inclined outer surface of the conical block, the other end of the push rod is threadedly connected to a positioning rod, one end of the positioning rod passes through the outside of the support ring, a reciprocating ring is fixed to the outer surface of the push rod, the outer surface of the reciprocating ring is in contact with the inner wall of the reciprocating cavity, a reset spring is fixed to one side of the reciprocating ring, and one end of the reset spring is fixed to one side of the inner wall of the reciprocating cavity.

[0014] Preferably, the copper patch is located below the overlap contact, the connection between the guide channel and the through hole is located below the overlap contact, the top of the bent channel is located below the connection between the guide channel and the through hole, the bottom of the bent channel is located below the buffer cavity, and the guide channel and the buffer cavity are connected to each other through the bent channel.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a drainage component to guide the corrosive liquid inside the aluminum capacitor shell to the outside to be neutralized by the neutralizing solution when a high pressure is generated inside the aluminum capacitor shell, and then discharge it, while releasing the high pressure to avoid explosion and combustion. At the same time, the electrical connection component is triggered to cut off the electrical connection part of the pin and trigger the alarm light to alarm, so as to facilitate the subsequent rapid determination of the location of the faulty capacitor for maintenance and repair. When the electrical connection part of the pin is cut off, the feedback protection component is triggered to position the aluminum capacitor shell to prevent the aluminum capacitor shell from tilting and falling due to expansion and instability. 2. When the electric bonding assembly of the present invention is working, in the process of capacitor failure, high pressure is generated in the annular cavity inside the aluminum capacitor shell, and the higher pressure will expand outward. Since a plurality of strip grooves are provided at the bottom of the buffer cavity, and the aluminum capacitor shell is made of metal aluminum, the strength of the strip groove portion at the top of the annular cavity is relatively weak and will be damaged first. After damage, the electrolyte solution and high pressure inside the annular cavity will be released into the buffer cavity. Under the action of the high pressure, the elastic circular arc piece will be tilted upward, thereby driving the guide rod to slide upward. When the guide rod slides upward, it will drive the constraint ring to slide upward, thereby separating the copper spring piece and the contact block from each other. At this time, the connection circuit of the two pins is disconnected. At the same time, the upward sliding of the guide rod will also cause the copper patch and the bonding contact to fit together, thereby conducting the circuit of the alarm light and making the alarm light work. 3. When the drainage assembly of the present invention is working, a neutralizing liquid is first placed inside the annular neutralization cavity, and the annular plate is made of a solid neutralizing material compression-molded and is loose, porous and breathable. When the guide rod slides upward, the bent flow channel slides upward, and the guide channel and the buffer cavity are connected through the bent flow channel. At this time, the high-pressure gas and corrosive liquid inside the buffer cavity can enter the guide channel through the bent flow channel, and then enter the annular neutralization cavity through the guide channel for neutralization. The neutralized liquid and gas enter the side cavity through the catheter and are finally discharged from the bent hole. A tympanic membrane is provided between the tops of the catheters to prevent the neutralizing liquid inside the annular neutralization cavity from entering the catheter during normal use of the capacitor. 4. When the feedback protection assembly of the present invention is working, when the guide rod slides upward, it will drive the conical block to slide upward. When the conical block slides upward, it will drive the sealing partition to slide upward through the connecting plate, thereby opening the connection between the bending hole and the side cavity. At this time, the high-pressure gas and neutralized solution inside the side cavity can be discharged through the bending hole. When the conical block slides upward, it will also push the push rod outward, so that one end of the positioning rod extends to the outside of the support ring to position and strengthen the aluminum capacitor shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention provides a schematic diagram of the main three-dimensional structure of an aluminum electrolytic capacitor for new energy vehicles; Figure 2 The present invention provides a schematic diagram of a bottom-up three-dimensional structure of an aluminum electrolytic capacitor for new energy vehicles; Figure 3 The present invention provides a schematic diagram of a side cross-sectional three-dimensional structure of an aluminum electrolytic capacitor for new energy vehicles; Figure 4 The present invention provides a schematic diagram of a three-dimensional cross-sectional structure from the other side of an aluminum electrolytic capacitor for new energy vehicles; Figure 5 The present invention provides a schematic cross-sectional perspective structural diagram of a feedback protection component in an aluminum electrolytic capacitor for new energy vehicles; Figure 6 The present invention provides a schematic diagram of a cross-sectional three-dimensional structure of a drainage component in an aluminum electrolytic capacitor for new energy vehicles; Figure 7 For the present invention Figure 4 A partial enlarged view of point A in the middle; Figure 8 For the present invention Figure 5 A partial enlarged view of point B in the middle; Figure 9 For the present invention Figure 6 A magnified partial view of point C in the middle.

[0017] Figure: 1. Aluminum capacitor shell; 2. Support ring; 3. Pin; 4. Warning light; 5. Heat shrink tubing; 6. Sealing cover; 7. Action chamber; 8. Buffer chamber; 9. Annular chamber; 10. Lap wire; 11. Strip groove; 12. Elastic circular arc piece; 13. Flow guide; 14. Annular neutralization chamber; 15. Annular plate; 16. Anode; 17. Cathode; 18. Cathode foil; 19. Electrolytic paper; 20. Anode foil; 21. Contact block; 22. Copper spring piece ; 23. Constraint ring; 24. Guide rod; 25. Through hole; 26. Bend flow channel; 27. Annular limit port; 28. Overlap contact; 29. ​​Connecting wire; 30. Copper patch; 31. Cylindrical cavity; 32. Conical block; 33. Reciprocating cavity; 34. Reciprocating ring; 35. Push rod; 36. Return spring; 37. Positioning rod; 38. Catheter; 39. Tympanic membrane; 40. Side port; 41. Connecting plate; 42. Side cavity; 43. Sealing partition; 44. Bend hole. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] See also Figure 1-9 The present invention provides a technical solution: an aluminum electrolytic capacitor for new energy vehicles, comprising an aluminum capacitor shell 1, a support ring 2 fixed to the bottom of the aluminum capacitor shell 1 near the outer edge, a sealing cover plate 6 provided between the inner walls of the support ring 2, a cylindrical cavity 31 defined within the sealing cover plate 6, a through hole 25 penetrating into the cylindrical cavity 31 defined at the middle of the top of the aluminum capacitor shell 1, a buffer cavity 8 defined within the aluminum capacitor shell 1 near the top edge, a drainage assembly provided within the buffer cavity 8, and a plurality of strip-shaped grooves 11 defined on the inner bottom surface of the buffer cavity 8; An annular cavity 9 is provided inside the aluminum capacitor shell 1, an action cavity 7 is provided at the bottom inside the aluminum capacitor shell 1, an electrical connection component is provided inside the action cavity 7, a feedback protection component is provided inside the sealing cover plate 6, a cathode foil 18 is provided inside the annular cavity 9, an electrolytic paper 19 is provided on one side of the cathode foil 18, and an anode foil 20 is provided on one side of the electrolytic paper 19. The cathode foil 18, the electrolytic paper 19 and the anode foil 20 are arranged in a winding shape inside the annular cavity 9, and a heat shrink tube sleeve 5 is provided on the outer surface of the aluminum capacitor shell 1.

[0020] The effect achieved is that, by setting up a drainage component, when a high pressure is generated inside the aluminum capacitor shell 1, the corrosive liquid inside it can be discharged to the outside to the neutralizing solution for neutralization, and then discharged, and the high pressure is released at the same time to avoid explosion and combustion. At the same time, the electrical connection component is triggered to cut off the electrical connection part of pin 3, and the alarm light 4 is triggered to alarm, so as to facilitate the subsequent rapid determination of the location of the faulty capacitor for maintenance and repair. When the electrical connection part of pin 3 is cut off, the feedback protection component will be triggered to position the aluminum capacitor shell 1 to prevent expansion from causing instability and causing the aluminum capacitor shell 1 to tilt and fall.

[0021] like Figure 2 、 Figure 3 、 Figure 4 and Figure 7 As shown, the electrical bonding assembly includes a guide rod 24, which is slidably connected to the inside of the through hole 25. An alarm light 4 is fixed to the top of the aluminum capacitor shell 1. Bonding contacts 28 are fixed to the inner walls of both sides of the through hole 25 near the top edge. A connecting wire 29 is provided on one side of the two bonding contacts 28. One end of the two connecting wires 29 is correspondingly connected to the alarm light 4. Copper patches 30 are fixed to the outer surfaces of both sides of the guide rod 24 near the top edge. The outer surfaces of one side of the two copper patches 30 are correspondingly fitted with the outer surfaces of the bonding contacts 28. An anode electrode 16 is provided on the inner bottom surface of the annular cavity 9. A cathode electrode 17 is provided on the inner bottom surface of the annular cavity 9 near the anode electrode 16. The anode electrode 16 and the cathode electrode 17 are The bottom of each of the guide rods 24 extends through the inner top surface of the action chamber 7. Two pins 3 extending into the interior of the action chamber 7 are fixed to the bottom of the sealing cover plate 6, wherein the top of one of the pins 3 is fixed to the bottom of the anode electrode 16, and the top of the other pin 3 is fixed with a contact block 21. The outer surface of the guide rod 24 is located inside the action chamber 7 and is fixed with a constraint ring 23. Copper spring sheets 22 are fixed to the outer surfaces of both sides of the constraint ring 23, wherein one end of one of the copper spring sheets 22 is fixed to the bottom of the cathode electrode 17, and one end of the other copper spring sheet 22 is in contact with the top of the contact block 21. A jumper wire 10 is fixed to one side of the bottom of the cathode electrode 17 and one side of the bottom of the anode electrode 16, and one end of the two jumpers 10 are connected to the copper patch 30 accordingly.

[0022] The effect achieved is that, during the process of capacitor failure, the high pressure generated in the annular cavity 9 inside the aluminum capacitor shell 1 will expand outward. Since a plurality of strip grooves 11 are provided at the bottom of the buffer cavity 8, and the aluminum capacitor shell 1 is made of metal aluminum, the strength of the strip groove 11 at the top of the annular cavity 9 is weak and will be damaged first. After damage, the electrolyte solution and high pressure inside the annular cavity 9 will be released into the buffer cavity 8. Under the action of the high pressure, the elastic circular arc piece 12 will be tilted upward, thereby driving the guide rod 24 to slide upward. When the guide rod 24 slides upward, it will drive the constraint ring 23 to slide upward, thereby separating the copper spring piece 22 and the contact block 21 from each other. At this time, the connection circuit of the two pins 3 is disconnected. At the same time, the upward sliding of the guide rod 24 will also cause the copper patch 30 and the landing contact 28 to fit together, thereby turning on the circuit of the alarm light 4 and making the alarm light 4 work.

[0023] like Figure 4 、 Figure 6 、 Figure 7 and Figure 9 As shown, the drainage component includes an elastic circular arc piece 12, which is fixed between the inner walls of the buffer cavity 8, and an annular limit opening 27 is provided on the outer surface of the guide rod 24. The inner side of the elastic circular arc piece 12 is engaged with the inner part of the annular limit opening 27. An annular neutralization cavity 14 is provided inside the aluminum capacitor shell 1 near the bottom edge, and an annular plate 15 is fixed in the middle between the inner walls of the annular neutralization cavity 14. Guide channels 13 are provided on the inner walls of both sides of the through hole 25 near the top edge, and the bottom ends of the two guide channels 13 pass through the inner bottom surface of the annular neutralization cavity 14 respectively. A bent flow channel 26 is provided inside the guide rod 24 near the two side edges, and both ends of the bent flow channel 26 pass through the outer surface of the guide rod 24. A conical block 32 is provided inside the cylindrical cavity 31, and the top of the conical block 32 is fixed to the top of the guide rod 24. Side cavities 42 are provided inside the sealing cover plate 6 near the two side edges. The cylindrical cavity 31 The closure 42 is provided with a circumferential edge portion thereof, and a circumferential edge portion thereof is provided on each side of the closure 42 so as to allow the closure 42 to pass through the closure 42. The circumferential edge portion thereof is provided with a circumferential edge portion thereof, and a circumferential edge portion thereof is provided on each side of the closure 42 so as to allow the closure 42 to pass through the closure 42.

[0024] The effect achieved is that, first, a neutralizing liquid is placed inside the annular neutralization chamber 14, and the annular plate 15 is made of compression-molded solid neutralizing material, and is loose, porous and breathable. In the process of the guide rod 24 sliding upward, the bending channel 26 will slide upward, and the guide channel 13 and the buffer chamber 8 will be connected through the bending channel 26. At this time, the high-pressure gas and corrosive liquid inside the buffer chamber 8 can enter the guide channel 13 through the bending channel 26, and then enter the annular neutralization chamber 14 through the guide channel 13 for neutralization. The neutralized liquid and gas enter the side chamber 42 through the conduit 38, and finally are discharged from the bending hole 44. A tympanic membrane 39 is arranged between the top of the conduit 38 to prevent the neutralizing liquid inside the annular neutralization chamber 14 from entering the conduit 38 during normal use of the capacitor.

[0025] like Figure 4 、 Figure 5 、 Figure 7 and Figure 8 As shown, the feedback protection assembly includes a push rod 35, a reciprocating cavity 33 is opened inside the sealing cover plate 6, the push rod 35 is arranged inside the reciprocating cavity 33, one end of the push rod 35 passes through the inside of the cylindrical cavity 31, and one end of the push rod 35 is in contact with the inclined outer surface of the conical block 32, the other end of the push rod 35 is threadedly connected to a positioning rod 37, one end of the positioning rod 37 passes through the outside of the support ring 2, and a reciprocating ring 34 is fixed to the outer surface of the push rod 35, and the outer surface of the reciprocating ring 34 is in contact with the outer surface of the reciprocating cavity 33. The inner walls fit together, and a return spring 36 is fixed to one side of the reciprocating ring 34. One end of the return spring 36 is fixed to the inner wall of one side of the reciprocating cavity 33. The copper patch 30 is located below the overlap contact 28. The connection between the flow guide channel 13 and the through hole 25 is located below the overlap contact 28. The top of the bending flow channel 26 is located below the connection between the flow guide channel 13 and the through hole 25. The bottom of the bending flow channel 26 is located below the buffer cavity 8. The flow guide channel 13 and the buffer cavity 8 are connected to each other through the bending flow channel 26.

[0026] The effect achieved is that when the guide rod 24 slides upward, it will drive the conical block 32 to slide upward. When the conical block 32 slides upward, it will drive the sealing partition 43 to slide upward through the connecting plate 41, thereby opening the connection between the bending hole 44 and the side cavity 42. At this time, the high-pressure gas and neutralized solution inside the side cavity 42 can be discharged through the bending hole 44. When the conical block 32 slides upward, it will also push the push rod 35 outward, so that one end of the positioning rod 37 extends to the outside of the support ring 2 to position and strengthen the aluminum capacitor shell 1.

[0027] Working principle: A neutralizing liquid is placed inside the annular neutralization cavity 14, and the annular plate 15 is made of a solid neutralizing material compressed and formed into a loose, porous and breathable shape. During the failure of the capacitor, a high pressure is generated in the annular cavity 9 inside the aluminum capacitor shell 1. The higher pressure will expand outward. Since a plurality of strip grooves 11 are provided at the bottom of the buffer cavity 8, and the aluminum capacitor shell 1 is made of metal aluminum, the strength of the strip groove 11 at the top of the annular cavity 9 is weak and will be damaged first. After the damage, the electrolyte solution and high pressure inside the annular cavity 9 will be damaged. The pressure will be released into the buffer chamber 8. Under the action of high pressure, the elastic circular arc piece 12 will be tilted upward, thereby driving the guide rod 24 to slide upward. When the guide rod 24 slides upward, it will drive the constraint ring 23 to slide upward, thereby separating the copper spring piece 22 and the contact block 21 from each other. At this time, the connection circuit of the two pins 3 is disconnected. At the same time, the upward sliding of the guide rod 24 will also make the copper patch 30 and the landing contact 28 fit together, turning on the circuit of the alarm light 4 and making the alarm light 4 work. In the process of the guide rod 24 sliding upward, the bending flow channel will be 26 slides upward, and connects the guide channel 13 and the buffer chamber 8 through the bent flow channel 26. At this time, the high-pressure gas and corrosive liquid inside the buffer chamber 8 can enter the guide channel 13 through the bent flow channel 26, and then enter the annular neutralization chamber 14 through the guide channel 13 for neutralization. The neutralized liquid and gas enter the side chamber 42 through the conduit 38 and are finally discharged from the bent hole 44. A tympanic membrane 39 is provided between the tops of the conduits 38 to prevent the capacitor from being located inside the annular neutralization chamber 14 during normal use. The liquid enters the conduit 38. When the guide rod 24 slides upward, it drives the conical block 32 to slide upward. When the conical block 32 slides upward, it drives the sealing partition 43 to slide upward through the connecting plate 41, thereby opening the connection between the bending hole 44 and the side cavity 42. At this time, the high-pressure gas and the neutralized solution inside the side cavity 42 can be discharged through the bending hole 44. When the conical block 32 slides upward, it also pushes the push rod 35 outward, so that one end of the positioning rod 37 extends to the outside of the support ring 2 to strengthen the positioning of the aluminum capacitor shell 1.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An aluminum electrolytic capacitor for new energy vehicles, characterized in that: The invention comprises an aluminum capacitor shell (1), wherein a support ring (2) is fixed to the bottom of the aluminum capacitor shell (1) near the edge of the outer surface, a sealing cover plate (6) is provided between the inner walls of the support ring (2), a cylindrical cavity (31) is provided inside the sealing cover plate (6), a through hole (25) is provided at the middle of the top of the aluminum capacitor shell (1) and penetrates into the cylindrical cavity (31), a buffer cavity (8) is provided inside the aluminum capacitor shell (1) near the top edge, a drainage component is provided inside the buffer cavity (8), and a plurality of strip-shaped grooves (11) are provided on the inner bottom surface of the buffer cavity (8); An annular cavity (9) is provided inside the aluminum capacitor shell (1), an action cavity (7) is provided at the bottom inside the aluminum capacitor shell (1), an electric connection component is provided inside the action cavity (7), and a feedback protection component is provided inside the sealing cover plate (6).

2. The aluminum electrolytic capacitor for new energy vehicles according to claim 1, characterized in that: A cathode foil (18) is provided inside the annular cavity (9), an electrolytic paper (19) is provided on one side of the cathode foil (18), and an anode foil (20) is provided on one side of the electrolytic paper (19). The cathode foil (18), the electrolytic paper (19), and the anode foil (20) are arranged in a coiled shape inside the annular cavity (9), and a heat shrink tubing (5) is provided on the outer surface of the aluminum capacitor shell (1).

3. The aluminum electrolytic capacitor for new energy vehicles according to claim 2, characterized in that: The electrical bonding assembly includes a guide rod (24), the guide rod (24) is slidably connected to the inside of the through hole (25), an alarm light (4) is fixed to the top of the aluminum capacitor shell (1), bonding contacts (28) are fixed to the inner walls of both sides of the through hole (25) near the top edge, a connecting wire (29) is provided on one side of the two bonding contacts (28), one end of the two connecting wires (29) is correspondingly connected to the alarm light (4), and copper patches (30) are fixed to the outer surfaces of both sides of the guide rod (24) near the top edge, and the outer surfaces of one side of the two copper patches (30) are correspondingly bonded to the outer surface of the bonding contact (28).

4. The aluminum electrolytic capacitor for new energy vehicles according to claim 3, characterized in that: The inner bottom surface of the annular cavity (9) is provided with an anode electrode (16), and the inner bottom surface of the annular cavity (9) is provided with a cathode electrode (17) on the side close to the anode electrode (16). The bottoms of the anode electrode (16) and the cathode electrode (17) are both penetrated to the inner top surface of the action cavity (7). The bottom of the sealing cover (6) is fixed with two pins (3) that penetrate into the inside of the action cavity (7), wherein the top of one of the pins (3) is fixed to the bottom of the anode electrode (16), and the top of the other pin (3) is fixed with a contact block (21). The guide rod (2 4) is located inside the action chamber (7) and a constraint ring (23) is fixed on the outer surface of the constraint ring (23), and copper spring sheets (22) are fixed on the outer surfaces of both sides of the constraint ring (23), one end of one of the copper spring sheets (22) is fixed to the bottom of the cathode electrode (17), and one end of the other copper spring sheet (22) is in contact with the top of the contact block (21), and a jumper wire (10) is fixed to one side of the bottom of the cathode electrode (17) and one side of the bottom of the anode electrode (16), and one end of the two jumpers (10) is connected to the copper patch (30) accordingly.

5. The aluminum electrolytic capacitor for new energy vehicles according to claim 4, characterized in that: The drainage assembly includes an elastic circular arc piece (12), the elastic circular arc piece (12) is fixed to the inner wall of the buffer cavity (8), the outer surface of the guide rod (24) is provided with an annular limiting opening (27), the inner side of the elastic circular arc piece (12) is engaged with the inside of the annular limiting opening (27), the inside of the aluminum capacitor shell (1) is provided with an annular neutralization cavity (14) near the bottom edge, and an annular plate (15) is fixed in the middle between the inner walls of the annular neutralization cavity (14).

6. The aluminum electrolytic capacitor for new energy vehicles according to claim 5, characterized in that: Both inner walls of the through hole (25) are provided with flow guides (13) near the top edge, and the bottom ends of the two flow guides (13) are correspondingly passed through to the inner bottom surface of the annular neutralization cavity (14). The inside of the guide rod (24) is provided with bending flow channels (26) near the edges on both sides, and both ends of the bending flow channels (26) are passed through to the outer surface of the guide rod (24).

7. The aluminum electrolytic capacitor for new energy vehicles according to claim 6, characterized in that: A conical block (32) is provided inside the cylindrical cavity (31), and the top of the conical block (32) is fixed to the top of the guide rod (24). Side cavities (42) are provided inside the sealing cover plate (6) near the edges on both sides. Side openings (40) that penetrate into the inside of the side cavities (42) are provided on both sides of the cylindrical cavity (31). Conduits (38) that are connected to the inside of the annular neutralization cavity (14) are fixed on the inner walls of both sides of the action cavity (7) near the top edges. The bottoms of the two conduits (38) are correspondingly connected to the inner top surface of the side cavities (42), and a tympanic membrane (39) is provided between the inner walls of the two conduits (38) near the top edges.

8. The aluminum electrolytic capacitor for new energy vehicles according to claim 7, characterized in that: A sealing partition (43) is slidably fitted on the inner wall of one side of the side cavity (42), one side of the sealing partition (43) is opposite to one end of the side opening (40), and the bottom of the sealing partition (43) extends to the inner bottom surface of the side cavity (42), a bending hole (44) is opened at the bottom edge of the inner wall of one side of the side cavity (42), one end of the bending hole (44) passes through the outside of the sealing cover plate (6), and the communicating portion between the bending hole (44) and the side cavity (42) is fitted with the sealing partition (43), a connecting plate (41) is provided inside the side opening (40), one end of the connecting plate (41) is fixed to the sealing partition (43), and the other end of the connecting plate (41) is fixed to the outer surface of the conical block (32).

9. The aluminum electrolytic capacitor for new energy vehicles according to claim 8, characterized in that: The feedback protection assembly includes a push rod (35), a reciprocating cavity (33) is provided inside the sealing cover plate (6), the push rod (35) is arranged inside the reciprocating cavity (33), one end of the push rod (35) passes through the inside of the cylindrical cavity (31), and one end of the push rod (35) is in contact with the inclined outer surface of the conical block (32), the other end of the push rod (35) is threadedly connected to a positioning rod (37), one end of the positioning rod (37) passes through the outside of the support ring (2), a reciprocating ring (34) is fixed to the outer surface of the push rod (35), the outer surface of the reciprocating ring (34) is in contact with the inner wall of the reciprocating cavity (33), a return spring (36) is fixed to one side of the reciprocating ring (34), and one end of the return spring (36) is fixed to the inner wall of one side of the reciprocating cavity (33).

10. The aluminum electrolytic capacitor for new energy vehicles according to claim 9, characterized in that: The copper patch (30) is located below the overlap contact (28), the connection point between the flow guide (13) and the through hole (25) is located below the overlap contact (28), the top of the bending flow channel (26) is located below the connection point between the flow guide (13) and the through hole (25), the bottom of the bending flow channel (26) is located below the buffer cavity (8), and the flow guide (13) and the buffer cavity (8) are connected to each other through the bending flow channel (26).

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