A power electronic capacitor and its production process

Abstract

The present invention relates to the technical field of capacitor preparation, and discloses a power electronic capacitor and a production process thereof, comprising a sealing top plate and a sealing bottom plate, wherein a protective jacket is fixedly connected between the sealing top plate and the sealing bottom plate, and a conductive shaft is sleeved in the protective jacket, and two groups of connection terminals are arranged on the top of the sealing top plate, characterized in that: a plurality of battery core mechanisms are arranged between the sealing top plate and the sealing bottom plate, and a lower conductive foot matched with the battery core mechanism is arranged on the sealing bottom plate. The power electronic capacitor and its production process can realize the firm positioning of the capacitor core by arranging a positioning component and a lower energy absorbing component and an upper energy absorbing component in the battery core mechanism, and solve the problem that the positioning is unstable due to the easy melting of paraffin wax in the positioning, and at the same time, through the coordination of the elastic positioning claw, the damping plate 1, and the damping claw and the damping plate 2, the energy generated by the vibration of the capacitor core in any direction can be absorbed.

Description

Technical Field

[0001] The invention relates to the technical field of capacitor preparation, in particular to a power electronic capacitor and a production process thereof. Background Art

[0002] Power electronic capacitors are devices used in power systems that can store electrical energy, improve voltage quality, reduce line losses, etc. Power capacitors can be divided into series capacitors and parallel capacitors. Series capacitors are mainly used to increase voltage and reduce the amplitude of current to protect electrical equipment in the circuit. Parallel capacitors are mainly used to increase reactive power to improve the power factor of the power system.

[0003] Existing power capacitors generally include a shell, in which a capacitor core group consisting of multiple capacitor core groups electrically connected is arranged. The capacitor core groups are fixed together by insulating wrapping paper, and then paraffin or insulating oil is filled in the shell as the filler of the capacitor. However, the positioning of this traditional capacitor core group in the shell depends on insulating wrapping paper and fillers such as paraffin. Since paraffin and the like are easily melted by heat, the capacitor core group is easy to shake in the shell, causing the capacitor core to collide and be damaged, which has higher requirements for the anti-vibration structure; in addition, fillers such as paraffin have the defect of large swelling properties on the metallized film of the capacitor core, which shortens the service life of the capacitor core, and when paraffin and oil overflow, they are easy to pollute the environment and burn; in addition, the capacitor core is easy to cause physical, chemical, electrical and other effects under the action of overvoltage, generating gas, increasing the pressure in the capacitor shell, causing the shell to bulge and even explode, posing certain safety hazards. Summary of the invention

[0004] The object of the present invention is to provide a power electronic capacitor and a production process thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a power electronic capacitor, comprising a sealed top plate and a sealed bottom plate, a protective jacket is fixedly connected between the sealed top plate and the sealed bottom plate, and a conductive shaft is sleeved in the protective jacket, and two groups of wiring terminals are arranged on the top of the sealed top plate, characterized in that: a plurality of battery cell mechanisms are arranged between the sealed top plate and the sealed bottom plate, a lower conductive foot matched with the battery cell mechanism is arranged on the sealed bottom plate, and an upper conductive mechanism matched with the battery cell mechanism is arranged on the sealed top plate;

[0006] The battery cell mechanism comprises a battery cell sleeve, a positioning component and a lower energy absorbing component at the bottom of the positioning component are clamped inside the battery cell sleeve, and an upper energy absorbing component is located at the top of the positioning component. A capacitor core is clamped inside the positioning component, and both ends of the capacitor core are provided with a gold-sprayed surface. A sealing end cap located at the end of the battery cell sleeve is threadedly connected on the sealing top plate, and an overpressure disconnection mechanism is provided in the middle of the sealing end cap.

[0007] The lower energy absorbing component has the same structure as the upper energy absorbing component. The upper energy absorbing component includes an upper conductive plate and a lower conductive plate. A plurality of damping claws are arranged between the upper conductive plate and the lower conductive plate, and a damping sheet 2 is pasted on the inner side of the damping claw.

[0008] The overpressure disconnection mechanism includes a mounting sleeve, an adjusting piston, a connecting rod and a pressure relief hole. The adjusting piston is slidably installed inside the mounting sleeve. When the pressure inside the battery core sleeve increases, the adjusting piston can slide upward inside the mounting sleeve. The pressure relief hole is opened on the mounting sleeve. When the adjusting piston slides upward inside the mounting sleeve, the pressure relief hole can be connected with the inside of the battery core sleeve.

[0009] Preferably, several of the battery cell mechanisms are arranged in a ring array between the sealing top plate and the sealing bottom plate, the battery cell sleeves are fixed to the sealing top plate and the sealing bottom plate by welding, and evenly distributed heat dissipation fins are arranged on the circumference of the battery cell sleeves. Several battery cell mechanisms are arranged in a ring array, so that the surface of the battery cell mechanism can be fully exposed, thereby greatly improving the heat dissipation effect of the capacitor core.

[0010] Preferably, the number of the lower conductive pins is the same as that of the battery cell structure, the lower conductive pins extend to the interior of the battery cell casing, and one end of the lower conductive pin is fixedly connected to the conductive shaft, the top of the conductive shaft is fixedly connected to a group of wiring terminals on the top of the sealing top plate, and the lower conductive pins extend to the interior of the battery cell casing and can be connected to the gold-sprayed surface at the bottom of the capacitor core through conduction through the lower energy-absorbing component, thereby realizing the electrical connection between the capacitor core and a group of wiring terminals.

[0011] Preferably, the upper conductive mechanism includes a conductive ring, which is embedded in the bottom of the sealing top plate and fixedly connected to another group of connecting terminals. A plurality of elastic connecting mechanisms cooperating with the connecting rod are arranged on the circumference of the conductive ring. The elastic connecting mechanism includes a positioning sleeve, and a conductive head and a reset spring are mounted inside the positioning sleeve. The reset spring always applies elastic force to the conductive head. When the sealing end cover is rotated into place on the sealing bottom plate, the elbow of the connecting rod can be moved to the top of the corresponding elastic connecting mechanism, and the reset spring applies elastic force to the conductive head to achieve close contact between the connecting rod and the conductive head.

[0012] Preferably, the positioning component includes a positioning cage, the inner wall of the positioning cage is provided with a plurality of elastic positioning claws, the elastic positioning claws are generally "J"-shaped, and a damping plate is pasted on the inner wall of the elastic positioning claws. When vibration occurs on the peripheral side of the capacitor core, the elastic positioning claws are squeezed, and the energy generated by the vibration is absorbed by the damping plate.

[0013] Preferably, the damping claw is welded between the upper conductive plate and the lower conductive plate, the outer rings of the upper conductive plate and the lower conductive plate are both provided with insulating rings, the upper conductive plate and the lower conductive plate are both provided with air holes, and the damping claw is "C"-shaped as a whole. When vibration occurs on the upper and lower sides of the capacitor core, the damping claw is squeezed, and the energy generated by the vibration is absorbed by the damping plate 2.

[0014] Preferably, a transmission rod is movably installed inside the mounting sleeve, the adjusting piston is fixedly sleeved on the outside of the transmission rod, and a compression spring is movably sleeved on the outside of the transmission rod. The bottom end of the transmission rod is abutted against the top of the upper energy-absorbing component, and conduction is performed through the transmission rod, the adjusting piston and the connecting rod to ensure the connection between the gold-sprayed surface on the top of the capacitor core and the upper conductive mechanism.

[0015] Preferably, the connecting rod is embedded in the interior of the sealing end cover, one end of the connecting rod is against the regulating piston, and the other end extends to the outside of the sealing end cover and is provided with a downward elbow. By providing the elbow, the connecting rod is facilitated to contact with the elastic connecting mechanism, thereby realizing the electrical connection between the capacitor core and the terminal.

[0016] A production process for a power electronic capacitor comprises the following steps:

[0017] S1. Embed the lower conductive foot in the sealing bottom plate, and embed the upper conductive mechanism in the sealing top plate. After putting a protective jacket on the outside of the conductive shaft, the bottom end of the conductive shaft is fixedly connected to the lower conductive foot, and the top end is fixedly connected to the sealing top plate. Two sets of wiring terminals are fixedly installed on the top of the sealing top plate, one set of wiring terminals is fixedly connected to the conductive shaft, and the other set is fixedly connected to the upper conductive mechanism;

[0018] S2. Weld a number of battery core sleeves between the sealing top plate and the sealing bottom plate, insert the lower energy absorbing component and the positioning component into the battery core sleeve in sequence, insert the capacitor core into the positioning component, and then insert the upper energy absorbing component into the battery core sleeve. Finally, thread the sealing end cover onto the sealing top plate to seal the top of the battery core sleeve. After the sealing end cover is rotated into place, the elbow of the connecting rod is squeezed onto the elastic connecting mechanism at the corresponding position.

[0019] S3. When preparing the positioning component, a damping sheet is pasted to the inner side of the elastic positioning claw, and a plurality of elastic positioning claws are welded to the inner wall of the positioning cage in a circular array with their openings facing downward;

[0020] S4. The preparation process of the lower energy absorbing component is the same as that of the upper energy absorbing component. First, insulating rings are installed on the outside of the upper conductive disk and the lower conductive disk, and fixed by gluing. The damping plate 2 is pasted to the inside of the damping claw, and a number of damping claws are welded in a circular array between the upper conductive disk and the lower conductive disk with their openings facing the center of the upper conductive disk.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The power electronic capacitor and its production process can realize the firm positioning of the capacitor core by arranging the positioning component and the lower energy absorbing component and the upper energy absorbing component in the battery core mechanism, thereby solving the problem of unstable positioning caused by the paraffin positioning being easily melted by heat. Meanwhile, through the cooperation of the elastic positioning claw, the damping plate 1 and the damping claw and the damping plate 2, the energy generated by the vibration of the capacitor core in any direction can be absorbed, thereby preventing the capacitor core from being damaged by collision.

[0023] 2. The power electronic capacitor and its production process use positioning components and energy-absorbing components at the upper and lower ends to position the capacitor core, abandoning the use of fillers such as paraffin, solving the problem that fillers such as paraffin have a large swelling property on the metallized film of the capacitor core, and there will be no leakage of fillers to pollute the environment or easy combustion, so it is safer.

[0024] 3. The power electronic capacitor and its production process can realize electrical connection between the capacitor core and the terminal by applying elastic force to the adjusting piston through the compression spring to make the end of the transmission rod contact the upper energy absorbing component. When the capacitor core fails and generates gas, causing the pressure inside the battery core sleeve to increase, the adjusting piston moves up under the action of pressure to disengage from the connecting rod, thereby disconnecting the power supply state of the capacitor core. At the same time, after the adjusting piston moves up, the pressure relief hole can be connected with the inside of the battery core sleeve, and the high-pressure gas inside the battery core sleeve is discharged, and the battery core sleeve is depressurized, thereby improving safety during use.

[0025] 4. The power electronic capacitor and its production process independently arrange several battery cell mechanisms to avoid interference between capacitor cores during operation. At the same time, several battery cell mechanisms are arranged in a ring array, so that the surface of the battery cell mechanism can be fully exposed, and combined with the heat dissipation fins on the surface of the battery cell casing, the heat dissipation effect of the capacitor core can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure after the overall combination of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the battery cell mechanism in the present invention;

[0028] Figure 3 It is a structural schematic diagram of the positioning component in the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the elastic positioning claw in the present invention;

[0030] Figure 5 It is a schematic structural diagram of the upper energy absorbing component in the present invention;

[0031] Figure 6 Schematic diagram of the structure of the damping claw in the present invention;

[0032] Figure 7 It is a structural schematic diagram of the connection position between the battery core mechanism and the sealing top plate in the present invention;

[0033] Figure 8 It is a structural schematic diagram of the overvoltage disconnection mechanism in the present invention;

[0034] Fig. 9 It is a structural schematic diagram of the installation position of the conductive shaft in the present invention;

[0035] Fig.10 It is a structural schematic diagram of the installation position of the upper conductive mechanism in the present invention;

[0036] Fig.11 It is a structural schematic diagram of the elastic connection mechanism in the present invention.

[0037] In the figure: 1. Sealing top plate; 2. Sealing bottom plate;

[0038] 3. Battery cell mechanism; 31. Battery cell casing; 32. Positioning component; 321. Positioning cage; 322. Elastic positioning claw; 323. Damping sheet 1;

[0039] 33. lower energy absorbing component; 34. upper energy absorbing component; 341. upper conductive plate; 342. lower conductive plate; 343. insulating collar; 344. damping claw; 345. damping plate II;

[0040] 35. Capacitor core; 36. Sealed end cap;

[0041] 37. Overpressure disconnect mechanism; 371. Mounting sleeve; 372. Transmission rod; 373. Adjusting piston; 374. Compression spring; 375. Connecting rod; 376. Pressure relief hole;

[0042] 4. Wiring terminal; 5. Conductive shaft; 6. Protective jacket;

[0043] 7. Upper conductive mechanism; 71. conductive ring; 72. elastic connection mechanism; 721. positioning sleeve; 722. conductive head; 723. reset spring;

[0044] 8. Lower the conductive pin. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figures 1 to 11 In an embodiment of the present invention, a power electronic capacitor includes a sealing top plate 1 and a sealing bottom plate 2, a protective jacket 6 is fixedly connected between the sealing top plate 1 and the sealing bottom plate 2, and a conductive shaft 5 is sleeved in the protective jacket 6, two groups of wiring terminals 4 are arranged on the top of the sealing top plate 1, and a plurality of battery cell mechanisms 3 are arranged between the sealing top plate 1 and the sealing bottom plate 2. The plurality of battery cell mechanisms 3 are independently arranged to avoid interference between capacitor cores 35 during operation. At the same time, the plurality of battery cell mechanisms 3 are in an annular array, so that the surface of the battery cell mechanism 3 can be fully exposed, and combined with the heat dissipation fins on the surface of the battery cell sleeve 31, the heat dissipation effect of the capacitor core 35 is greatly improved, the sealing bottom plate 2 is provided with a lower conductive foot 8 matched with the battery cell mechanism 3, and the sealing top plate 1 is provided with an upper conductive mechanism 7 matched with the battery cell mechanism 3;

[0047] The battery core mechanism 3 includes a battery core sleeve 31, and a positioning component 32 and a lower energy absorbing component 33 located at the bottom of the positioning component 32 are clamped inside the battery core sleeve 31, and an upper energy absorbing component 34 is located at the top of the positioning component 32. The capacitor core 35 is positioned by the positioning component 32 and the energy absorbing components at the upper and lower ends, and the use of fillers such as paraffin is abandoned, which solves the problem that fillers such as paraffin have a large swelling property on the metallized film of the capacitor core;

[0048] A capacitor core 35 is clamped inside the positioning component 32, and both ends of the capacitor core 35 are provided with gold-sprayed surfaces. A sealing end cover 36 located at the end of the battery core sleeve 31 is threadedly connected to the sealing top plate 1, and an overpressure disconnect mechanism 37 is provided in the middle of the sealing end cover 36. After the capacitor core 35 is positioned, conduction is carried out through the lower energy absorbing component 33, the upper energy absorbing component 34, the upper conductive mechanism 7, and the lower conductive foot 8, so that the capacitor core 35 can be electrically connected to the terminal 4, abandoning the previous operation of using copper strips for welding and conducting electricity, and making it easier to disassemble and assemble the capacitor core 35.

[0049] The lower energy absorbing component 33 has the same structure as the upper energy absorbing component 34. The positioning component 32, the lower energy absorbing component 33 and the upper energy absorbing component 34 are arranged in the battery core mechanism 3, so as to realize the firm positioning of the capacitor core 35. The upper energy absorbing component 34 includes an upper conductive plate 341 and a lower conductive plate 342. A plurality of damping claws 344 are arranged between the upper conductive plate 341 and the lower conductive plate 342, and a damping sheet 2 345 is pasted on the inner side of the damping claw 344. Through the cooperation of the elastic positioning claw 322, the damping sheet 1 323, the damping claw 344 and the damping sheet 2 345, the energy generated by the vibration of the capacitor core 35 in any direction can be absorbed to prevent the capacitor core 35 from being damaged by collision.

[0050] The overpressure disconnection mechanism 37 includes a mounting sleeve 371, an adjusting piston 373, a connecting rod 375 and a pressure relief hole 376. The adjusting piston 373 is slidably installed inside the mounting sleeve 371. When the internal pressure of the battery sleeve 31 increases, the adjusting piston 373 can slide upward inside the mounting sleeve 371. The pressure relief hole 376 is opened on the mounting sleeve 371. When the capacitor core 35 fails and generates gas, causing the internal pressure of the battery sleeve 31 to increase, the adjusting piston 373 moves upward under the action of pressure to disengage from the connecting rod 375, thereby disconnecting the power-on state of the capacitor core 35. When the adjusting piston 373 slides upward inside the mounting sleeve 371, the pressure relief hole 376 can be connected with the inside of the battery sleeve 31. After the adjusting piston 373 moves upward, the pressure relief hole 376 can be connected with the inside of the battery sleeve 31, and the high-pressure gas inside the battery sleeve 31 is discharged, and the battery sleeve 31 is pressure-relieved, thereby improving safety during use.

[0051] As a further implementation scheme of the above invention: a plurality of battery cell mechanisms 3 are arranged in a ring array between the sealing top plate 1 and the sealing bottom plate 2. The plurality of battery cell mechanisms 3 are arranged independently to avoid interference between the capacitor cores 35 during operation. The battery cell sleeve 31 and the sealing top plate 1 and the sealing bottom plate 2 are fixed by welding. The surrounding side of the battery cell sleeve 31 is provided with uniformly distributed heat dissipation fins. The plurality of battery cell mechanisms 3 are arranged in a ring array, so that the surface of the battery cell mechanism 3 can be fully exposed, and combined with the heat dissipation fins on the surface of the battery cell sleeve 31, the heat dissipation effect on the capacitor core 35 can be greatly improved.

[0052] As a further implementation scheme of the above invention: the number of the lower conductive pins 8 is the same as that of the battery cell mechanism 3, the lower conductive pins 8 extend to the inside of the battery cell sleeve 31, and one end of the lower conductive pin 8 is fixedly connected to the conductive shaft 5, the top of the conductive shaft 5 is fixedly connected to a group of wiring terminals 4 on the top of the sealing top plate 1, and the lower conductive pins 8 extend to the inside of the battery cell sleeve 31 and conduct through the lower energy absorbing component 33 to be connected to the gold-sprayed surface at the bottom end of the capacitor core 35, thereby realizing the electrical connection between the capacitor core 35 and a group of wiring terminals 4.

[0053] As a further implementation scheme of the above invention: the upper conductive mechanism 7 includes a conductive ring 71, which is embedded in the bottom of the sealing top plate 1, and the conductive ring 71 is fixedly connected to another group of terminal blocks 4. A plurality of elastic connecting mechanisms 72 cooperating with the connecting rod 375 are arranged on the circumferential side of the conductive ring 71. The elastic connecting mechanism 72 can be used to connect the connecting rod 375 to the conductive ring 71, thereby realizing the electrical connection between the capacitor core 35 and another group of terminal blocks 4. The elastic connecting mechanism 72 includes a positioning sleeve 721, and a conductive head 722 and a reset spring 723 are mounted inside the positioning sleeve 721. The reset spring 723 always applies elastic force to the conductive head 722. When the sealing end cover 36 is rotated into place on the sealing bottom plate 2, the elbow of the connecting rod 375 can be moved to the top of the corresponding elastic connecting mechanism 72, and the reset spring 723 applies elastic force to the conductive head 722 to achieve close contact between the connecting rod 375 and the conductive head 722.

[0054] As a further implementation scheme of the above invention: the positioning component 32 includes a positioning cage 321, and the inner wall of the positioning cage 321 is provided with a plurality of elastic positioning claws 322. The positioning cage 321 cooperates with the plurality of elastic positioning claws 322 inside to achieve stable positioning of the capacitor core 35. The elastic positioning claw 322 is "J"-shaped as a whole, and a damping plate 323 is pasted on the inner wall of the elastic positioning claw 322. When vibration occurs on the peripheral side of the capacitor core 35, the elastic positioning claw 322 is squeezed, and the energy generated by the vibration is absorbed by the damping plate 323, thereby achieving effective shock absorption of the capacitor core 35.

[0055] As a further implementation scheme of the above invention: the damping claw 344 is welded between the upper conductive disk 341 and the lower conductive disk 342, and the outer rings of the upper conductive disk 341 and the lower conductive disk 342 are both provided with insulating rings 343. The upper conductive disk 341, the lower conductive disk 342 and the damping claw 344 are all made of metal materials to ensure their conductivity. The insulating ring 343 is provided to ensure the insulation between the upper conductive disk 341, the lower conductive disk 342 and the battery core sleeve 31. The upper conductive disk 341 and the lower conductive disk 342 are both provided with air holes. The damping claw 344 is "C" shaped as a whole. When vibration occurs on the upper and lower sides of the capacitor core 35, the damping claw 344 is squeezed, and the energy generated by the vibration is absorbed by the damping plate 345, thereby achieving effective shock absorption of the capacitor core 35.

[0056] As a further implementation scheme of the above invention: a transmission rod 372 is movably installed inside the mounting sleeve 371, and the adjusting piston 373 is fixedly sleeved on the outside of the transmission rod 372. The adjusting piston 373 is applied with elastic force by means of a compression spring 374, so that the bottom end of the transmission rod 372 is abutted against the upper energy absorbing component 34. The transmission rod 372 is movably sleeved outside with a compression spring 374, and the bottom end of the transmission rod 372 is abutted against the top of the upper energy absorbing component 34. Conducting energy is carried out through the transmission rod 372, the adjusting piston 373 and the connecting rod 375, thereby ensuring the connection between the gold-sprayed surface on the top of the capacitor core 35 and the upper conductive mechanism 7.

[0057] As a further implementation scheme of the above invention: a connecting rod 375 is embedded in the interior of the sealing end cover 36, and one end of the connecting rod 375 is against the regulating piston 373. When the capacitor core 35 fails and generates gas, causing the internal pressure of the battery core sleeve 31 to increase, the regulating piston 373 moves upward under the action of pressure to break away from the connection with the connecting rod 375, disconnecting the power supply state of the capacitor core 35, and the other end extends to the outside of the sealing end cover 36 and is provided with a downward elbow. By providing the elbow, the connecting rod 375 is facilitated to contact with the elastic connection mechanism 72, thereby realizing the electrical connection between the capacitor core 35 and the terminal 4.

[0058] A production process for a power electronic capacitor comprises the following steps:

[0059] S1. Embed the lower conductive foot 8 on the sealing bottom plate 2, and embed the upper conductive mechanism 7 on the sealing top plate 1. After the protective jacket 6 is set on the outside of the conductive shaft 5, the bottom end of the conductive shaft 5 is fixedly connected to the lower conductive foot 8, and the top end is fixedly connected to the sealing top plate 1. Two sets of wiring terminals 4 are fixedly installed on the top of the sealing top plate 1, one set of wiring terminals 4 is fixedly connected to the conductive shaft 5, and the other set is fixedly connected to the upper conductive mechanism 7;

[0060] S2. Weld a plurality of battery sleeves 31 between the sealing top plate 1 and the sealing bottom plate 2, insert the lower energy absorbing component 33 and the positioning component 32 into the battery sleeves 31 in sequence, insert the capacitor core 35 into the positioning component 32, and then insert the upper energy absorbing component 34 into the battery sleeves 31. Finally, thread the sealing end cover 36 onto the sealing top plate 1 to seal the top of the battery sleeve 31. After the sealing end cover 36 is rotated into place, the elbow of the connecting rod 375 is squeezed onto the elastic connecting mechanism 72 at the corresponding position.

[0061] S3, when preparing the positioning component 32, the damping sheet 1 323 is pasted on the inner side of the elastic positioning claw 322, and a plurality of elastic positioning claws 322 are welded to the inner wall of the positioning cage 321 in a circular array with their openings facing downward;

[0062] S4. The preparation process of the lower energy absorbing component 33 is the same as that of the upper energy absorbing component 34. First, insulating rings 343 are installed on the outside of the upper conductive plate 341 and the lower conductive plate 342 and fixed by gluing. The damping plate 345 is pasted to the inside of the damping claw 344, and a plurality of damping claws 344 are welded in a circular array between the upper conductive plate 341 and the lower conductive plate 342 with their openings facing the center of the upper conductive plate 341.

[0063] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A power electronic capacitor, comprising a sealed top plate (1) and a sealed bottom plate (2), wherein a protective jacket (6) is fixedly connected between the sealed top plate (1) and the sealed bottom plate (2), and a conductive shaft (5) is sleeved in the protective jacket (6), and two groups of connection terminals (4) are arranged on the top of the sealed top plate (1), characterized in that: A plurality of battery cell mechanisms (3) are arranged between the sealing top plate (1) and the sealing bottom plate (2); a lower conductive foot (8) cooperating with the battery cell mechanism (3) is arranged on the sealing bottom plate (2); and an upper conductive mechanism (7) cooperating with the battery cell mechanism (3) is arranged on the sealing top plate (1); The battery cell mechanism (3) comprises a battery cell sleeve (31), a positioning component (32) and a lower energy absorbing component (33) located at the bottom end of the positioning component (32) are clamped inside the battery cell sleeve (31), and an upper energy absorbing component (34) is located at the top end of the positioning component (32); a capacitor core (35) is clamped inside the positioning component (32), and both ends of the capacitor core (35) are provided with gold-sprayed surfaces; a sealing end cover (36) located at the end of the battery cell sleeve (31) is threadedly connected to the sealing top plate (1), and an overpressure disconnection mechanism (37) is provided in the middle of the sealing end cover (36); The lower energy absorbing component (33) has the same structure as the upper energy absorbing component (34), and the upper energy absorbing component (34) comprises an upper conductive plate (341) and a lower conductive plate (342). A plurality of damping claws (344) are arranged between the upper conductive plate (341) and the lower conductive plate (342), and a damping sheet 2 (345) is pasted on the inner side of the damping claw (344); The overpressure disconnect mechanism (37) comprises a mounting sleeve (371), an adjusting piston (373), a connecting rod (375) and a pressure relief hole (376); the adjusting piston (373) is slidably mounted inside the mounting sleeve (371); when the pressure inside the battery core sleeve (31) increases, the adjusting piston (373) can slide upward inside the mounting sleeve (371); the pressure relief hole (376) is provided on the mounting sleeve (371); when the adjusting piston (373) slides upward inside the mounting sleeve (371), the pressure relief hole (376) can communicate with the inside of the battery core sleeve (31).

2. A power electronic capacitor according to claim 1, characterized in that: A plurality of the battery cell mechanisms (3) are arranged in a ring array between a sealing top plate (1) and a sealing bottom plate (2); the battery cell sleeve (31) is fixed to the sealing top plate (1) and the sealing bottom plate (2) by welding; and evenly distributed heat dissipation fins are arranged on the circumference of the battery cell sleeve (31).

3. A power electronic capacitor according to claim 1, characterized in that: The number of the lower conductive pins (8) is the same as that of the battery cell structure (3); the lower conductive pins (8) extend into the interior of the battery cell sleeve (31); one end of the lower conductive pin (8) is fixedly connected to the conductive shaft (5); and the top end of the conductive shaft (5) is fixedly connected to a group of wiring terminals (4) at the top of the sealing top plate (1).

4. A power electronic capacitor according to claim 1, characterized in that: The upper conductive mechanism (7) comprises a conductive ring (71), the conductive ring (71) is embedded in the bottom of the sealing top plate (1), and the conductive ring (71) is fixedly connected to another group of connecting terminals (4), and a plurality of elastic connecting mechanisms (72) cooperating with the connecting rod (375) are arranged on the circumference of the conductive ring (71), and the elastic connecting mechanism (72) comprises a positioning sleeve (721), and a conductive head (722) and a return spring (723) are mounted inside the positioning sleeve (721), and the return spring (723) always applies elastic force to the conductive head (722).

5. A power electronic capacitor according to claim 1, characterized in that: The positioning component (32) comprises a positioning cage (321), the inner wall of the positioning cage (321) is provided with a plurality of elastic positioning claws (322), the elastic positioning claws (322) are in a "J" shape as a whole, and a damping sheet (323) is pasted on the inner wall of the elastic positioning claws (322).

6. A power electronic capacitor according to claim 1, characterized in that: The damping claw (344) is welded between the upper conductive plate (341) and the lower conductive plate (342); the outer rings of the upper conductive plate (341) and the lower conductive plate (342) are both provided with insulating collars (343); the upper conductive plate (341) and the lower conductive plate (342) are both provided with air holes; and the damping claw (344) is in a "C" shape as a whole.

7. A power electronic capacitor according to claim 1, characterized in that: A transmission rod (372) is movably mounted inside the mounting sleeve (371), the regulating piston (373) is fixedly sleeved on the outside of the transmission rod (372), a compression spring (374) is movably sleeved on the outside of the transmission rod (372), and the bottom end of the transmission rod (372) abuts against the top of the upper energy absorbing component (34).

8. A power electronic capacitor according to claim 1, characterized in that: The connecting rod (375) is embedded in the sealing end cover (36), one end of the connecting rod (375) is against the regulating piston (373), and the other end extends to the outside of the sealing end cover (36) and is provided with a downward elbow.

9. A production process for a power electronic capacitor according to any one of claims 1 to 8, characterized in that: The steps include: S1, embedding the lower conductive foot (8) in the sealing bottom plate (2), and embedding the upper conductive mechanism (7) in the sealing top plate (1), after putting a protective jacket (6) on the outside of the conductive shaft (5), the bottom end of the conductive shaft (5) is fixedly connected to the lower conductive foot (8), and the top end is fixedly connected to the sealing top plate (1), and two groups of wiring terminals (4) are fixedly installed on the top of the sealing top plate (1), one group of wiring terminals (4) is fixedly connected to the conductive shaft (5), and the other group is fixedly connected to the upper conductive mechanism (7); S2, welding a plurality of battery core sleeves (31) between the sealing top plate (1) and the sealing bottom plate (2), inserting a lower energy absorbing component (33) and a positioning component (32) into the battery core sleeves (31) in sequence, inserting a capacitor core (35) into the positioning component (32), and then inserting an upper energy absorbing component (34) into the battery core sleeve (31), and finally threading a sealing end cover (36) onto the sealing top plate (1) to seal the top end of the battery core sleeve (31), and after the sealing end cover (36) is rotated into place, the elbow of the connecting rod (375) is pressed onto the elastic connecting mechanism (72) at the corresponding position; S3, when preparing the positioning component (32), a damping sheet (323) is pasted on the inner side of the elastic positioning claw (322), and a plurality of elastic positioning claws (322) are welded to the inner wall of the positioning cage (321) in a circular array with their openings facing downward; S4. The preparation process of the lower energy absorbing component (33) is the same as that of the upper energy absorbing component (34). First, an insulating ring (343) is mounted on the outside of the upper conductive disk (341) and the lower conductive disk (342), and the insulating ring (343) is fixed by gluing. The damping plate 2 (345) is pasted to the inside of the damping claw (344), and a plurality of damping claws (344) are welded in a ring array between the upper conductive disk (341) and the lower conductive disk (342) with their openings facing the center of the upper conductive disk (341).

Images