A high voltage explosion-proof film capacitor

Abstract

The present invention relates to the field of automotive film capacitors, and in particular to a high-voltage explosion-proof film capacitor, including an automotive film capacitor, wherein the automotive film capacitor comprises a shell, a limiting frame is arranged in the middle and upper part of the shell, two evenly distributed openings are opened on both sides of the limiting frame, the limiting frame is opened with evenly distributed limiting grooves, capacitor cores are arranged inside the limiting grooves, insulating sheets are arranged between the capacitor cores on the front and rear sides, and wiring copper bars are arranged at the upper and lower parts of the capacitor cores. The present invention can constrain and limit the capacitor cores through the limiting frame and the limiting grooves, and can realize the separate arrangement of the capacitor cores by separating the limiting grooves, thereby preventing adjacent capacitor cores from contacting and rubbing with each other, which affects the safety of the capacitor cores, thereby greatly reducing the failure rate of the capacitors in actual use.

Description

Technical Field

[0001] The invention relates to the field of film capacitors for vehicles, and in particular to a high-voltage explosion-proof film capacitor. Background Art

[0002] There are generally three places where capacitors are used in cars: energy storage, motors, and electronic controls. In the design of the power supply part of new energy vehicles, high-voltage capacitors are needed for smoothing and filtering applications. The working environment inside the car is usually harsh, requiring capacitors to have strong high temperature resistance, high reliability, and long life. Film capacitors have greater advantages than aluminum electrolytic capacitors. Film capacitors use metal foil as electrodes, and overlap them with plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends and wind them into cylindrical capacitors. Vehicles often need to be used under different pressure environments, and general automotive film capacitors are relatively closed in structure, resulting in capacitors that are prone to bursting due to pressure differences with the external environment under very high pressure environments. At the same time, the vibration of the vehicle during driving often causes the automotive film capacitor to vibrate, and the pressed capacitor core will rebound and deform for a long time, causing adjacent capacitor cores to contact and rub, affecting the safety of the capacitor core. Therefore, we propose a high-voltage explosion-proof film capacitor to solve the above-mentioned problems. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a high-voltage explosion-proof film capacitor.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a high-voltage explosion-proof film capacitor, including a vehicle-use film capacitor, the vehicle-use film capacitor including a shell, a limit frame is arranged in the middle and upper part of the shell, and two evenly distributed openings are opened on both sides of the limit frame, and the limit frame is provided with evenly distributed limit grooves, capacitor cores are arranged inside the limit grooves, and insulating sheets are arranged between the front and rear sides of the capacitor cores, and the upper and lower parts of the capacitor cores are provided with wiring copper bars, and the wiring copper bars are respectively arranged in the upper and lower parts of the shell, and one end of the wiring copper bars is provided with evenly distributed wiring terminals, and the ends of the wiring terminals away from the wiring copper bars penetrate the side walls of the shell, and evenly distributed through holes are opened on both sides of the limit groove, and guide plates are arranged on the front and rear sides of the limit groove, and the side of the guide plate close to the capacitor core is fixedly connected with evenly distributed arc extinguishing grids, and both ends of the guide plate penetrate the side walls of the limit groove.

[0005] Preferably, mounting frames are provided on both sides of the bottom of the shell, a wiring segment is provided at the lower part of one side of the shell, and evenly distributed wiring ports are provided at one end of the wiring segment away from the shell, and wiring terminals are provided inside the wiring ports.

[0006] Preferably, a plurality of openings are provided on both sides of the shell, and a plurality of positive constant valves are installed inside the openings.

[0007] Preferably, a plurality of heat-conducting frames are arranged in the middle of the inner side of the limiting frame, and the heat-conducting frames are fixedly connected to both ends of the guide plate on the front and rear sides of the insulating sheet, and the upper and lower parts of one end of the heat-conducting frame away from the guide plate are fixedly connected to the heat-conducting sheet.

[0008] Preferably, a plurality of fixed bins are installed at one end of the heat-conducting frame away from the guide plate, heat-conducting sheets are installed inside the fixed bins, and one end of the heat-conducting sheets close to the heat-conducting frame penetrates through the side wall of the fixed bin.

[0009] Preferably, the top of the fixed bin is fixedly connected with a return pipe, both ends of the return pipe are arranged at the top of the fixed bin, and a one-way valve is installed inside the return pipe on one side close to the heat conduction frame.

[0010] Preferably, a rotating bin is provided on one side of the return pipe away from the heat-conducting frame, a fixed ring is rotatably connected to the outer periphery of the rotating bin, and blades evenly distributed are fixedly connected to the outer periphery of the fixed ring.

[0011] Preferably, a bottom groove is provided in the middle of the bottom end of the shell, the top of the bottom groove is made of insulating heat-conducting material, evenly distributed vents are provided on the front and rear sides of the bottom groove, and a gas one-way permeable membrane is installed in the middle of the top end of the bottom groove.

[0012] Preferably, the limiting frame is of overhead design, and an empty layer is provided at the bottom of the shell.

[0013] Preferably, the interior of the rotating bin is rotatably connected with a guide ring, and the interior of the guide ring is provided with an inclined guide plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] When the temperature inside the capacitor core rises due to continuous high heat, causing the pressure inside the automotive film capacitor to be too high, the positive constant valve can be used to discharge the gas causing the high pressure inside the automotive film capacitor through an opening, so that the internal pressure of the automotive film capacitor will not burst due to excessive pressure. At the same time, when the internal temperature of the automotive film capacitor drops, causing the internal pressure of the automotive film capacitor to be lower than the external pressure, the positive constant valve can be opened again to allow external gas to enter the automotive film capacitor, so that the inside of the automotive film capacitor can always maintain a pressure balance with the outside world, making it convenient for vehicles to be used in different pressure environments.

[0016] During the installation of the automotive film capacitor, people can first insert the capacitor core into the limit groove on the limit frame in sequence, and the capacitor core can be constrained and limited by the limit frame and the limit groove. By separating the limit grooves, the capacitor core can be arranged separately, thereby preventing the automotive film capacitor from vibrating due to the movement of the vehicle during actual use, causing the pressed capacitor core to rebound and deform, resulting in contact and friction between adjacent capacitor cores, affecting the safety of the capacitor core, thereby greatly reducing the failure rate of the capacitor during actual use.

[0017] In actual use, when a problem occurs with the capacitor core and an arc is generated, the arc can be guided over by the arc extinguishing grid, and then the arc can be extinguished, thereby achieving comprehensive protection for the capacitor core. The insulating sheet between the two guide plates can prevent the arc from being transmitted to the adjacent arc extinguishing grid, which is beneficial to actual use and avoids the film of a single capacitor core from being damaged, resulting in arc generation and breakdown of adjacent capacitor cores. This can directly reduce the impact of the fault arc expansion as much as possible at the first time the fault occurs, which is beneficial to improving the safety of automotive film capacitors when used, and can effectively reduce maintenance costs.

[0018] The arc extinguishing grid can be used to conduct the heat generated by the capacitor core during operation during daily use, thereby preventing continuous accumulation of heat inside the automotive film capacitor, effectively reducing the possibility of explosion of the automotive film capacitor, and facilitating the long-term use of the automotive film capacitor. The arc extinguishing grid and the guide plate can conduct the heat to the inside of the limit frame, and then the heat conducting frame and the heat conducting sheet on the heat conducting frame can be used to heat the refrigerant inside the fixed bin. When the refrigerant inside the fixed bin boils due to the heat, it will sublime into gas, and the continuously expanding gas will enter the return pipe, and then the gas will be guided and condensed in the return pipe, and then flow back to the fixed bin through the one-way valve, realizing continuous circulation of the refrigerant. The absorption and condensation of the refrigerant can greatly absorb the conducted heat, realize cooling, and prevent overheating around the capacitor core, which will affect the operation of the automotive film capacitor.

[0019] When passing through the transfer bin, the guide ring will be driven to rotate. When the guide ring rotates, it will drive the external fixed ring to rotate synchronously. The rotation of the fixed ring can utilize the outer blades to disturb the surrounding airflow to form a vortex, thereby conducting the surrounding hot air to the bottom of the automotive film capacitor, replacing the lower temperature air at the bottom of the automotive film capacitor, and further improving the heat dissipation effect. By opening a bottom groove at the bottom of the automotive film capacitor, changing the material thereto to a material with good thermal conductivity, and opening a vent, the heat dissipation at the bottom of the automotive film capacitor can be facilitated, which is beneficial to practical use.

[0020] When automotive film capacitors are used for a long time, there will be no large amount of heat accumulation, which will affect the service life. The swirl generated by the rotation of the blades will drive the gas around the return pipe, thereby accelerating the temperature drop of the return pipe, allowing the refrigerant gas inside the fixed compartment to condense and fall faster, speeding up the circulation speed, which is conducive to continuous heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front three-dimensional structure of a high-voltage explosion-proof film capacitor of the present invention;

[0022] Figure 2 It is a schematic diagram of a partial structure of a high-voltage explosion-proof film capacitor viewed from above according to the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of a shell of a high-voltage explosion-proof film capacitor of the present invention;

[0024] Figure 4 It is a schematic diagram of the local structure of a limit frame of a high-voltage explosion-proof film capacitor of the present invention;

[0025] Figure 5 It is a schematic diagram of the local structure of a capacitor core of a high-voltage explosion-proof film capacitor of the present invention;

[0026] Figure 6 It is a schematic diagram of the local structure in a limiting groove of a high-voltage explosion-proof film capacitor of the present invention;

[0027] Figure 7 It is a schematic diagram of the local structure of a fixed compartment of a high-voltage explosion-proof film capacitor of the present invention;

[0028] Figure 8 It is a schematic diagram of the local structure in a fixed compartment of a high-voltage explosion-proof film capacitor of the present invention;

[0029] Fig. 9 The present invention is a schematic diagram of the local structure of a transfer bin of a high-voltage explosion-proof film capacitor.

[0030] 1. Film capacitor for vehicle; 101. Shell; 102. Wiring section; 103. Mounting frame; 104. Opening 1; 105. Wiring terminal; 106. Wiring port; 107. Bottom groove; 108. One-way gas permeation membrane; 109. Vent; 110. Positive constant valve; 111. Limiting frame; 112. Wiring copper bar; 113. Transfer bin; 114. Capacitor core; 115. Opening 2; 116. Limiting groove; 117. Through hole; 118. Arc extinguishing grid; 119. Fixed bin; 120. Insulating sheet; 121. Guide plate; 122. Heat conducting sheet; 123. Fixed ring; 124. Return pipe; 125. Blade; 126. Heat conducting frame; 127. Guide ring; 128. One-way valve. DETAILED DESCRIPTION

[0031] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0032] like Figure 1-Figure 9 A high-voltage explosion-proof film capacitor shown includes a film capacitor 1 for a vehicle. The film capacitor 1 for a vehicle includes a shell 101. A limit frame 111 is provided in the middle and upper part of the shell 101. The limit frame 111 is an overhead design. An empty layer is provided at the bottom of the shell 101. Evenly distributed openings 115 are provided on both sides of the limit frame 111. Evenly distributed limit grooves 116 are provided on the limit frame 111. Capacitor cores 114 are provided inside the limit grooves 116. Insulating sheets 120 are provided between the front and rear capacitor cores 114. Wiring copper bars 112 are provided at the upper and lower parts of the capacitor core 114. The wiring copper bars 112 are respectively provided at the upper and lower parts of the shell 101. Evenly distributed wiring terminals 105 are provided at one end of the wiring copper bars 112. One end of the wiring terminal 105 away from the wiring copper bar 112 passes through the side wall of the shell 101. Evenly distributed through holes 117 are provided on both sides of the limiting grooves 116.

[0033] Furthermore, in a specific implementation, during the installation of the automotive film capacitor 1, people can first insert the capacitor core 114 into the limiting groove 116 on the limiting frame 111 in sequence, and the capacitor core 114 can be constrained and limited by the limiting frame 111 and the limiting groove 116. By separating the limiting grooves 116, the capacitor core 114 can be arranged separately, thereby preventing the automotive film capacitor 1 from vibrating due to the movement of the vehicle during actual use, causing the pressed capacitor core 114 to rebound and deform, resulting in contact and friction between adjacent capacitor cores, affecting the safe use of the capacitor core 114, thereby greatly reducing the failure rate of the capacitor during actual use.

[0034] Among them, guide plates 121 are arranged on the front and rear sides of the limiting groove 116, and the side of the guide plate 121 close to the capacitor core 114 is fixedly connected with evenly distributed arc extinguishing grids 118, and both ends of the guide plate 121 penetrate the side wall of the limiting groove 116;

[0035] Furthermore, in specific implementation and actual use, when a problem occurs with the capacitor core 114 during use and an arc is generated, the arc can be guided over by the arc extinguishing grid 118, and then the arc can be extinguished, thereby achieving comprehensive protection for the capacitor core 114. The insulating sheet 120 between the two guide plates 121 can prevent the arc from being transmitted to the adjacent arc extinguishing grid 118, which is beneficial to actual use and avoids film damage in a single capacitor core 114, which causes an arc to be generated and penetrates the adjacent capacitor core 114. This can reduce the impact of the fault arc expansion as much as possible at the first time when the fault occurs, which is beneficial to improving the safety of the automotive film capacitor 1 during use, and can effectively reduce maintenance costs. The arc extinguishing grid 118 can conduct the heat generated by the capacitor core 114 during operation during daily use, thereby preventing the heat from continuously accumulating inside the automotive film capacitor 1, and can effectively reduce the possibility of explosion of the automotive film capacitor 1, which is beneficial to the long-term use of the automotive film capacitor 1.

[0036] Wherein, mounting frames 103 are provided on both sides of the bottom of the housing 101, a wiring section 102 is provided at the lower part of one side of the housing 101, and evenly distributed wiring ports 106 are provided at one end of the wiring section 102 away from the housing 101, and wiring terminals 105 are provided inside the wiring ports 106. Multiple openings 104 are provided on both sides of the housing 101, and multiple positive constant valves 110 are installed inside the openings 104;

[0037] Furthermore, in specific implementation, in actual use, the connection of each capacitor core 114 can be achieved through the wiring copper bus 112 at the upper and lower parts of the capacitor core 114, and the connection of the vehicle film capacitor 1 with the rest of the vehicle equipment can be achieved through the wiring terminal 105, so as to realize the assembly process. When the temperature inside the capacitor core 114 rises due to continuous high temperature, resulting in excessive pressure inside the vehicle film capacitor 1, the gas causing high pressure inside the vehicle film capacitor 1 can be discharged through the opening 104 through the positive constant valve 110, so that the internal pressure of the vehicle film capacitor 1 will not burst due to excessive pressure. At the same time, when the internal temperature of the vehicle film capacitor 1 drops, resulting in the internal pressure of the vehicle film capacitor 1 being less than the external pressure, the positive constant valve 110 can be opened again to pass the external gas into the vehicle film capacitor 1, so that the inside of the vehicle film capacitor 1 can always maintain a pressure balance with the outside world, which is convenient for the vehicle to be used in different pressure environments.

[0038] Among them, a plurality of heat-conducting frames 126 are arranged in the middle part of the inner side of the limiting frame 111, and the heat-conducting frames 126 are fixedly connected to the two ends of the guide plate 121 on the front and rear sides of the insulating sheet 120, and the upper and lower parts of the ends of the heat-conducting frames 126 away from the guide plate 121 are fixedly connected with heat-conducting sheets 122, and the ends of the heat-conducting frames 126 away from the guide plate 121 are installed with a plurality of fixed bins 119, and the fixed bins 119 are installed with heat-conducting sheets 122 inside, and the ends of the heat-conducting sheets 122 close to the heat-conducting frames 126 penetrate the side walls of the fixed bins 119;

[0039] Furthermore, in a specific implementation, the heat can be conducted to the inner side of the limit frame 111 through the arc extinguishing grid 118 and the guide plate 121, and then the refrigerant inside the fixed bin 119 can be heated through the heat conducting frame 126 and the heat conducting plate 122 on the heat conducting frame 126. When the refrigerant inside the fixed bin 119 boils due to the heat, it will sublime into gas, and the continuously expanding gas will enter the return pipe 124. Then, the gas will be guided and condensed in the return pipe 124, and then flow back to the fixed bin 119 through the one-way valve 128, so as to realize the continuous circulation of the refrigerant. The refrigerant can absorb a large amount of the conducted heat through absorption and condensation, so as to realize cooling work and prevent overheating around the capacitor core 114 and affect the operation of the automotive film capacitor 1.

[0040] Among them, the top of the fixed bin 119 is fixedly connected with a return pipe 124, both ends of the return pipe 124 are arranged at the top of the fixed bin 119, a one-way valve 128 is installed inside the side of the return pipe 124 close to the heat-conducting frame 126, and a rotating bin 113 is arranged on the side of the return pipe 124 away from the heat-conducting frame 126, and the outer periphery of the rotating bin 113 is rotatably connected with a fixed ring 123, and the outer periphery of the fixed ring 123 is fixedly connected with evenly distributed blades 125, and the inside of the rotating bin 113 is rotatably connected with a guide ring 127, and the inside of the guide ring 127 is provided with inclined guide plates;

[0041] Furthermore, in a specific implementation, when passing through the rotating bin 113, the guide ring 127 will be driven to rotate. When the guide ring 127 rotates, it will drive the external fixed ring 123 to rotate synchronously. The rotation of the fixed ring 123 can utilize the outer blades 125 to disturb the surrounding airflow and form a vortex, so that the surrounding hot air can be conducted to the bottom of the vehicle film capacitor 1, and the lower temperature air at the bottom of the vehicle film capacitor 1 is replaced, thereby further improving the heat dissipation effect. At the same time, the vortex generated by the rotation of the blades 125 will drive the gas around the return pipe 124, thereby accelerating the temperature drop rate of the return pipe 124, so that the refrigerant gas inside the fixed bin 119 can condense and fall faster, accelerate the circulation speed, and facilitate continuous heat dissipation.

[0042] A bottom groove 107 is provided in the middle of the bottom end of the housing 101, the top of the bottom groove 107 is made of insulating heat-conducting material, which may be a heat-conducting insulating silicone sheet with metal oxide added thereto, and evenly distributed vents 109 are provided on the front and rear sides of the bottom groove 107, and a gas one-way permeable membrane 108 is installed in the middle of the top end of the bottom groove 107;

[0043] Furthermore, in the specific implementation, by opening a bottom groove 107 at the bottom of the vehicle film capacitor 1, and changing the material therein to a material with good thermal conductivity, and by opening a vent 109, the heat dissipation at the bottom of the vehicle film capacitor 1 can be facilitated, which is beneficial to actual use, so that the vehicle film capacitor 1 will not have a large amount of heat accumulation when used for a long time, thereby affecting the service life.

[0044] Working principle:

[0045] During the installation of the automotive film capacitor 1, people can first insert the capacitor core 114 into the limiting groove 116 on the limiting frame 111 in sequence, and the capacitor core 114 can be constrained and limited by the limiting frame 111 and the limiting groove 116. By separating the limiting grooves 116, the capacitor core 114 can be arranged separately, so as to prevent the automotive film capacitor 1 from vibrating due to the running of the vehicle during actual use, so that the pressed capacitor core 114 rebounds and deforms, causing adjacent capacitor cores to contact and rub against each other, affecting the safety of the capacitor core 114, thereby greatly reducing the failure rate of the capacitor during actual use. In actual use, through the capacitor core 114 The upper and lower copper wiring bars 112 can realize the connection of each capacitor core 114, and the connection terminal 105 can realize the connection of the vehicle film capacitor 1 with the rest of the vehicle equipment, and realize the assembly process. In actual use, when the capacitor core 114 has problems during use and an arc is generated, the arc can be guided through the arc extinguishing grid 118, and then the arc can be extinguished, thereby realizing comprehensive protection of the capacitor core 114. The insulating sheet 120 between the two guide plates 121 can prevent the arc from being transmitted to the adjacent arc extinguishing grid 118, which is beneficial to actual use and avoids the film damage of a single capacitor core 114, resulting in arc generation and breakdown of the adjacent capacitor core 114, thereby being able to directly At the first moment of the fault, the influence of the expansion of the fault arc can be reduced as much as possible, which is beneficial to improving the safety of the automotive film capacitor 1 during use, and can effectively reduce the maintenance cost. The arc extinguishing grid 118 can conduct the heat generated by the capacitor core 114 during operation during daily use, thereby avoiding the continuous accumulation of heat inside the automotive film capacitor 1, and can effectively reduce the possibility of explosion of the automotive film capacitor 1, which is beneficial to the long-term use of the automotive film capacitor 1. The arc extinguishing grid 118 and the guide plate 121 can conduct the heat to the inside of the limit frame 111, and then the heat conducting frame 126 and the heat conducting sheet 122 on the heat conducting frame 126 can be used to heat the refrigerant inside the fixed bin 119. When the refrigerant inside the fixed bin 119 After the refrigerant is heated and boiled, it will sublime into gas, and the continuously expanding gas will enter the return pipe 124, and then the gas will be guided and condensed in the return pipe 124, and then flow back to the fixed warehouse 119 through the one-way valve 128, so as to realize the continuous circulation of the refrigerant. The absorption and condensation of the refrigerant can greatly absorb the conducted heat, realize the cooling work, and prevent the capacitor core 114 from overheating and affecting the work of the automotive film capacitor 1. When passing through the rotating warehouse 113, the guide ring 127 will be driven to rotate. When the guide ring 127 rotates, it will drive the external fixed ring 123 to rotate synchronously. Through the rotation of the fixed ring 123, the outer blades 125 can be used to disturb the surrounding airflow to form a vortex, so that the surrounding hot air can be transferred.The heat is conducted to the bottom of the vehicle film capacitor 1, and the air with lower temperature at the bottom of the vehicle film capacitor 1 is replaced, so as to further improve the heat dissipation effect. By opening a bottom groove 107 at the bottom of the vehicle film capacitor 1, and changing the material therein to a material with good thermal conductivity, and opening a vent 109, the heat dissipation at the bottom of the vehicle film capacitor 1 can be facilitated, which is beneficial to practical use, so that the vehicle film capacitor 1 will not have a large amount of heat accumulation when used for a long time, which will affect the service life. At the same time, the swirl generated by the rotation of the blades 125 will drive the gas around the return pipe 124, so as to accelerate the temperature drop speed of the return pipe 124, so that the refrigerant gas inside the fixed chamber 119 can condense and drop faster, thereby accelerating the circulation speed. degree, which is conducive to continuous heat dissipation. When the capacitor core 114 is heated up due to continuous high temperature, resulting in excessive pressure inside the automotive film capacitor 1, the positive constant valve 110 can discharge the high-pressure gas inside the automotive film capacitor 1 through the opening 104, so that the internal pressure of the automotive film capacitor 1 will not burst due to excessive pressure. At the same time, when the internal temperature of the automotive film capacitor 1 drops, resulting in the internal pressure of the automotive film capacitor 1 being less than the external pressure, the positive constant valve 110 can be opened again to pass the external gas into the automotive film capacitor 1, so that the internal pressure of the automotive film capacitor 1 can always maintain a pressure balance with the outside world, which is convenient for the vehicle to use under different pressure environments.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A high voltage explosion-proof film capacitor, comprising a film capacitor for a vehicle (1), characterized in that: The automotive film capacitor (1) comprises a housing (101), a limiting frame (111) is arranged in the middle and upper part of the housing (101), both sides of the limiting frame (111) are provided with evenly distributed openings (115), the limiting frame (111) is provided with evenly distributed limiting grooves (116), capacitor cores (114) are arranged inside the limiting grooves (116), an insulating sheet (120) is arranged between the front and rear sides of the capacitor core (114), and the upper and lower parts of the capacitor core (114) are provided with wiring copper bars (112), and the wiring copper bars (112) are arranged in the housing (101) respectively. The upper and lower parts are each provided with evenly distributed wiring terminals (105) at one end of the wiring copper bar (112), and the ends of the wiring terminals (105) away from the wiring copper bar (112) penetrate the side wall of the shell (101), and evenly distributed through holes (117) are provided on both sides of the interior of the limiting groove (116), and guide plates (121) are provided on the front and rear sides of the limiting groove (116), and evenly distributed arc extinguishing grids (118) are fixedly connected to the side of the guide plate (121) close to the capacitor core (114), and both ends of the guide plate (121) penetrate the side wall of the limiting groove (116), and the shell (101) is provided with There are a plurality of openings (104), each of which has a plurality of positive constant valves (110) installed inside. A plurality of heat-conducting frames (126) are arranged in the middle of the inner side of the limit frame (111). The heat-conducting frames (126) are fixedly connected to the two ends of the guide plate (121) on the front and rear sides of the insulating sheet (120). The upper and lower parts of one end of the heat-conducting frame (126) away from the guide plate (121) are fixedly connected to the heat-conducting sheet (122). The end of the heat-conducting frame (126) away from the guide plate (121) is equipped with a plurality of fixed bins (119), and the fixed bins (119) are equipped with heat-conducting sheets (122). The heat-conducting sheets (122) are fixedly connected to the upper and lower parts of the ends of the heat-conducting frames (126) away from the guide plate (121). 22) The ends close to the heat-conducting frame (126) penetrate the side wall of the fixed bin (119), the top of the fixed bin (119) is fixedly connected with a return pipe (124), both ends of the return pipe (124) are arranged at the top of the fixed bin (119), a one-way valve (128) is installed inside the side of the return pipe (124) close to the heat-conducting frame (126), a rotating bin (113) is arranged on the side of the return pipe (124) away from the heat-conducting frame (126), the outer periphery of the rotating bin (113) is rotatably connected with a fixed ring (123), and the outer periphery of the fixed ring (123) is fixedly connected with evenly distributed blades (125).

2. A high voltage explosion-proof film capacitor according to claim 1, characterized in that: Mounting frames (103) are provided on both sides of the bottom of the housing (101), a wiring section (102) is provided at the lower part of one side of the housing (101), and evenly distributed wiring ports (106) are provided at one end of the wiring section (102) away from the housing (101), and wiring terminals (105) are provided inside the wiring ports (106).

3. The high voltage explosion-proof film capacitor according to claim 1, characterized in that: A bottom groove (107) is provided in the middle of the bottom end of the shell (101); the top of the bottom groove (107) is made of insulating heat-conducting material; evenly distributed vents (109) are provided on the front and rear sides of the bottom groove (107); and a gas one-way permeable membrane (108) is installed in the middle of the top end of the bottom groove (107).

4. The high voltage explosion-proof film capacitor according to claim 1, characterized in that: The limiting frame (111) is of an overhead design, and an empty layer is provided at the bottom of the shell (101).

5. The high voltage explosion-proof film capacitor according to claim 1, characterized in that: The interior of the rotating bin (113) is rotatably connected to a guide ring (127), and the interior of the guide ring (127) is provided with an inclined guide plate.

Images