Leak-proof aluminum electrolytic capacitor module

Abstract

The present application discloses a leakage-proof aluminum electrolytic capacitor module, comprising: an aluminum electrolytic capacitor assembly, the aluminum electrolytic capacitor assembly comprises a plurality of aluminum electrolytic capacitors, and the aluminum electrolytic capacitor comprises an aluminum shell and the aluminum shell is provided with a pressure valve; a protective shell, the protective shell is surrounded by a receiving cavity, a plurality of aluminum electrolytic capacitors are arranged in the receiving cavity, a condensation assembly is provided in the receiving cavity, and the condensation assembly is used to condense the electrolyte vapor discharged by the pressure valve. The leakage-proof aluminum electrolytic capacitor module disclosed in the present application, the condensation assembly can quickly condense and liquefy the electrolyte vapor and collect the liquefied electrolyte in the protective shell, so that the electrolyte vapor inside the capacitor module is basically stored in the protective shell in the form of liquefaction, and there is no need to discharge the electrolyte vapor to the outside through the pressure valve, which can effectively prevent the leakage of the electrolyte vapor, avoid the leakage of the electrolyte causing short circuit and ignition of other electronic devices, and thus improve the use safety of the aluminum electrolytic capacitor module.

Description

Technical Field

[0001] The present invention generally relates to the field of capacitors, and more particularly to a leakage-proof aluminum electrolytic capacitor module. Background Art

[0002] An aluminum electrolytic capacitor module usually includes a protective shell and a plurality of aluminum electrolytic capacitors arranged inside the protective shell. An explosion-proof valve is provided on the protective shell. When some aluminum electrolytic capacitors are abnormal, electrolyte vapor will be ejected and the pressure inside the protective shell will increase. When the pressure inside the protective shell reaches a threshold, the electrolyte vapor will be discharged through the explosion-proof valve. The electrolyte vapor discharged by the above-mentioned explosion-proof valve will be sprayed onto other electronic devices, causing short circuits and sparks in related electronic devices, thereby causing related electronic devices to fail or even cause fires. Therefore, how to reduce the leakage of electrolyte vapor inside the aluminum electrolytic capacitor module has become a problem that needs to be solved urgently in this field. Summary of the invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a leakage-proof aluminum electrolytic capacitor module.

[0004] The present application provides a leakage-proof aluminum electrolytic capacitor module, comprising:

[0005] An aluminum electrolytic capacitor assembly, the aluminum electrolytic capacitor assembly comprising a plurality of aluminum electrolytic capacitors, wherein the aluminum electrolytic capacitors comprise an aluminum shell and the aluminum shell is provided with a pressure valve;

[0006] The protective shell is surrounded by a receiving cavity, a plurality of aluminum electrolytic capacitors are arranged in the receiving cavity, a condensation component is arranged in the receiving cavity, and the condensation component is used for condensing the electrolyte vapor discharged from the pressure valve.

[0007] Furthermore, the protective shell includes a plurality of shell plates and the plurality of shell plates are arranged to form a containing cavity. The protective shell is provided with a liquid cooling channel, which is used for allowing cooling liquid to pass through to cool the condensing component, wherein the liquid cooling channel is located in at least one of the shell plates.

[0008] Furthermore, the condensing assembly is arranged on at least one shell plate having a liquid cooling channel.

[0009] Furthermore, the protective shell includes a first shell plate and a second shell plate which are arranged opposite to each other in the height direction of the aluminum electrolytic capacitor assembly, the condensation assembly is arranged between the first shell plate and the second shell plate, and the condensation assembly is extended along the height direction of the aluminum electrolytic capacitor assembly.

[0010] Furthermore, the condensation assembly includes a plurality of condensation pieces arranged at intervals, the condensation pieces include a condensation column and a plurality of condensation plates arranged on the condensation column, the condensation column is arranged on the protective shell, and the plurality of condensation plates are distributed circumferentially along the condensation column.

[0011] Furthermore, a plurality of aluminum electrolytic capacitors are dispersedly disposed in the accommodating cavity, and the plurality of condensation members include a first condensation member, and the first condensation member is located in the dispersed gaps formed by the plurality of aluminum electrolytic capacitors.

[0012] Furthermore, the plurality of condensation members further include a second condensation member, and the second condensation member is located in a gap between the aluminum electrolytic capacitor assembly and the protective shell.

[0013] Furthermore, the protective shell includes a shell body and a sealing plate, the shell body is provided with an open end, the sealing plate is arranged at the open end to seal the open end, the sealing plate is provided with a plurality of mounting through holes arranged one-to-one corresponding to a plurality of aluminum electrolytic capacitors, the sealed ends of the aluminum electrolytic capacitors pass through the corresponding mounting through holes, and the aluminum electrolytic capacitors are sealed and matched with the mounting through holes.

[0014] Furthermore, the sealing plate is an elastic structure, and the sealing plate is embedded in the open end, wherein the mounting through hole is in compression contact with the waist portion of the aluminum electrolytic capacitor.

[0015] Furthermore, at least one shell plate in the protective shell is provided with at least one exhaust portion, the exhaust portion is provided with an exhaust hole, and a blocking plate corresponding to the exhaust portion is provided in the accommodating cavity. The blocking plate is arranged close to the exhaust portion and a gap is formed between the blocking plate and the exhaust hole.

[0016] The leakage-proof aluminum electrolytic capacitor module provided in the embodiment of the present application is provided with a condensation component in the accommodating cavity of the protective shell. The electrolyte vapor ejected from the aluminum electrolytic capacitor can be quickly condensed and liquefied under the condensation action of the condensation component, and the liquefied electrolyte is collected in the protective shell, so that the electrolyte vapor inside the capacitor module is basically stored in the protective shell in a liquefied form, and there is no need to discharge the electrolyte vapor to the outside through a pressure valve. The leakage of the electrolyte vapor can be effectively prevented, and the leakage of the electrolyte can be avoided to avoid the short circuit and ignition of other electronic devices, thereby improving the safety of the aluminum electrolytic capacitor module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 A three-dimensional schematic diagram of a leakage-proof aluminum electrolytic capacitor module provided in an embodiment of the present application;

[0019] Figure 2 A three-dimensional schematic diagram of a housing body provided in an embodiment of the present application;

[0020] Figure 3 A schematic top view of the housing body provided in an embodiment of the present application;

[0021] Figure 4 for Figure 3A magnified view of part A in FIG.

[0022] Figure 5 A schematic side view of a housing body provided in an embodiment of the present application;

[0023] Figure 6 for Figure 5 BB section view in;

[0024] Figure 7 A three-dimensional schematic diagram of a sealing plate provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Please refer to the attached Figure 1-2 , an embodiment of the present application provides a leakage-proof aluminum electrolytic capacitor module, the capacitor module includes a protective shell 200 and an aluminum electrolytic capacitor assembly 100, the protective shell 200 is surrounded by a receiving cavity, and the aluminum electrolytic capacitor assembly 100 is received in the receiving cavity. The aluminum electrolytic capacitor assembly 100 includes a plurality of aluminum electrolytic capacitors 110, each of which includes an aluminum shell and a pressure valve is provided on the aluminum shell. The pressure valve is located in the receiving cavity, and the pressure valve discharges electrolyte vapor into the receiving cavity after being triggered. The capacitor module also includes a condensation assembly, which is located in the receiving cavity. The temperature of the condensation assembly is much lower than the electrolyte vapor discharged by the pressure valve. When the electrolyte vapor encounters the condensation assembly, it will condense and liquefy on the surface of the condensation assembly, and the liquefied electrolyte is stored in the protective shell 200. Therefore, the leakage-proof aluminum electrolytic capacitor module provided in the present embodiment uses the above-mentioned condensation component to quickly condense and liquefy the electrolyte vapor inside the module, so that the electrolyte vapor inside the capacitor module is basically stored in the protective shell 200 in a liquefied form, and there is no need to discharge the electrolyte vapor to the outside through a pressure valve. The leakage of electrolyte vapor can be effectively prevented, and the leakage of electrolyte can be avoided to avoid the short circuit and ignition of other electronic devices, thereby improving the safety of the aluminum electrolytic capacitor module.

[0028] In some embodiments of the present application, the protective shell 200 includes a plurality of shell plates and the plurality of shell plates are arranged to form a receiving cavity, and the protective shell 200 is provided with a liquid cooling channel 213, wherein the liquid cooling channel 213 is located in at least one of the shell plates. The liquid cooling channel 213 is used to allow the coolant to pass through to cool the condensation component, so that the condensation component can continuously condense the electrolyte vapor, thereby improving the condensation effect and condensation efficiency of the condensation component.

[0029] The liquid cooling channel 213 may be centrally arranged in one of the shell plates, or may be arranged in a plurality of connected shell plates. Alternatively, liquid cooling channels 213 may be arranged in a plurality of shell plates and each liquid cooling channel 213 is independent of each other, which may provide a better cooling effect on the condensation component, but each liquid cooling channel 213 needs to be provided with a liquid cooling circulation device.

[0030] Of course, in other embodiments, the cooling method for the condensation component is not limited to liquid cooling, for example, but not limited to air cooling, for example, the above-mentioned liquid cooling channel 213 is used as an air cooling channel for cold air to pass through. The liquid cooling method has a better cooling effect on the condensation component, and the liquid cooling circulation device required to be configured has a lower cost.

[0031] In some embodiments of the present application, the condensation assembly is disposed on at least one shell plate having a liquid cooling channel 213. Since the shell plate provided with the liquid cooling channel 213 has a better cooling effect, the condensation assembly is disposed on the shell plate having the liquid cooling channel 213, compared with the condensation assembly being disposed on the shell body without the liquid cooling channel 213, so that the cooling effect of the liquid cooling on the condensation assembly can be improved, and then the condensation effect and condensation efficiency of the condensation assembly on the electrolyte vapor can be further improved.

[0032] Of course, in other embodiments, the condensation assembly may also be only arranged on a shell without a liquid cooling channel 213, or a part of the condensation assembly may be arranged on a shell with a liquid cooling channel 213, and the other part may be arranged on a shell without a liquid cooling channel 213.

[0033] In some embodiments of the present application, the protective shell 200 includes a first shell plate 211 and a second shell plate that are arranged opposite to each other in the height direction of the aluminum electrolytic capacitor assembly 100, and the condensation assembly is arranged between the first shell plate 211 and the second shell plate, and the condensation assembly is extended along the height direction of the aluminum electrolytic capacitor assembly 100. By arranging the condensation assembly as described above, the condensation action area of ​​the condensation assembly can be increased, and the condensation effect and condensation efficiency of the condensation assembly on the electrolyte vapor can be further improved.

[0034] Of course, in other embodiments, the configuration of the condensation assembly is not limited to the above, for example but not limited to, it can be extended in a direction perpendicular to the height direction of the aluminum electrolytic capacitor assembly 100 .

[0035] Please refer to the attached Figure 1-2 and 5-6, preferably, the aluminum electrolytic capacitor assembly 100 is placed on the first shell plate 211, and the liquid cooling channel 213 is arranged on the first shell plate 211, wherein the condensation assembly is arranged on the side of the first shell plate 211 close to the accommodating cavity. By centrally arranging the liquid cooling channel 213 in the first shell plate 211 and the condensation assembly is also centrally arranged on the first shell plate 211, the coolant passing through the liquid cooling channel 213 can cool the condensation assembly to the maximum extent, further improving the condensation effect and condensation efficiency of the condensation assembly on the electrolyte vapor. The liquid cooling channel 213 can be arranged in a curved shape to increase the liquid cooling effect. The liquid cooling channel 213 includes a liquid inlet and a liquid outlet, and the two are respectively located on opposite sides of the first shell plate 211. The liquid cooling channel 213 includes a plurality of straight pipe sections 2131 arranged at intervals, and any two adjacent straight pipe sections 2131 are connected by a U-shaped pipe section 2132.

[0036] Please refer to the attached Figure 1-3 In some embodiments of the present application, the condensation assembly includes a plurality of condensation members arranged at intervals, the condensation members include a condensation column 311 and a plurality of condensation plates 312 arranged on the condensation column 311, the condensation column 311 is arranged on the protective shell 200, and the plurality of condensation plates 312 are distributed circumferentially along the condensation column 311. The above-mentioned condensation member has a larger condensation and liquefaction area, so that it has better condensation efficiency and a simple structure.

[0037] The size of the condensation plate 312 along the axial direction of the condensation column 311 can be set larger to further increase the condensation area. For example, the size of the condensation plate 312 along the axial direction of the condensation column 311 is the same or substantially the same as the size of the condensation column.

[0038] The condensation plate 312 may be in contact with the shell plate provided with the liquid cooling channel 213 to improve the cooling effect of the liquid cooling on the condensation plate 312. Referring to the drawings, one end of the condensation plate 312 in the condensation assembly is connected to the first shell plate 211.

[0039] Of course, the structure of the condensing member is not limited to the above, for example, it is only the condensing plate 312, etc.

[0040] In some embodiments of the present application, a plurality of aluminum electrolytic capacitors 110 are dispersedly disposed in the accommodating cavity, and a dispersed gap is formed between the plurality of aluminum electrolytic capacitors 110, and the presence of the dispersed gap can facilitate heat dissipation and electrical isolation between the plurality of aluminum electrolytic capacitors 110. The plurality of condensation members may all be disposed in the dispersed gap, or a portion of the plurality of condensation members may be located in the dispersed gap and another portion may be located at the periphery of the aluminum electrolytic capacitor assembly 100.

[0041] Among them, the multiple condensation members include a first condensation member 310, and the number of the first condensation members 310 can be multiple. The first condensation member 310 is arranged in the dispersed gaps between the multiple aluminum electrolytic capacitors 110, which not only shortens the distance between the aluminum electrolytic capacitor 110 and at least part of the condensation assembly to make them close to each other, but also enables the partial condensation assembly to be close to more aluminum electrolytic capacitors 110, speeding up the liquefaction speed and liquefaction efficiency of the condensation assembly to the electrolyte vapor, and further improving the anti-leakage performance of the aluminum electrolytic capacitor module. The multiple condensation members also include a second condensation member 320, and the number of the second condensation member 320 can be multiple. The second condensation member 320 is located in the gap between the aluminum electrolytic capacitor assembly 100 and the protective shell 200 to condense the electrolyte vapor located in the gap. By setting the above-mentioned first condensation member 310 and the second condensation member 320, the electrolyte vapor inside the module can be more fully condensed and liquefied, and the electrolyte vapor is prevented from leaking to the greatest extent.

[0042] The dispersed aluminum electrolytic capacitor assembly 100 may be arranged in an array, but is not limited to being arranged in an array. For example, multiple aluminum electrolytic capacitors 110 may be arranged in a single row, and a condenser is provided in the dispersed gap between any two adjacent aluminum electrolytic capacitors 110. For another example, please refer to the attached Figure 1-3 A plurality of aluminum electrolytic capacitors 110 are arranged in a multi-row and multi-column matrix, a first condensation member 310 is provided at the intersection of the gap between any two adjacent rows of aluminum electrolytic capacitors 110 and the gap between any two adjacent columns of aluminum electrolytic capacitors 110, and a second condensation member 320 is provided on both sides of the gap between any two adjacent rows of aluminum electrolytic capacitors 110 and on both sides of the gap between any two adjacent columns of aluminum electrolytic capacitors 110.

[0043] Among them, the pressure valve can be arranged on the side wall or bottom wall of the aluminum shell. When the pressure valve is arranged on the side wall of the aluminum shell, the aluminum electrolytic capacitor 110 has a peripheral gap and the pressure valve is arranged toward the peripheral gap. The peripheral gap can be part of the above-mentioned dispersed gap or the gap between the circumferential side wall of the aluminum electrolytic capacitor 110 and the protective shell 200. When the pressure valve is arranged on the bottom wall of the aluminum shell, a guide channel connected to the accommodating cavity can be formed on the shell plate used to carry the aluminum electrolytic capacitor 110, and the guide channel allows the pressure valve to smoothly discharge the electrolyte vapor. For example, a plurality of protruding step structures are provided on the first shell plate, and the aluminum electrolytic capacitor assembly 100 is placed on the plurality of step structures, and the plurality of step structures are arranged at intervals to form a guide channel.

[0044] In some embodiments of the present application, the protective shell 200 includes a shell body 210 and a sealing plate 220, the shell body 210 is provided with an open end, and the sealing plate 220 is arranged at the open end to seal the open end to prevent electrolyte vapor from leaking from the open end. The sealing plate 220 is provided with a plurality of mounting through holes 221 corresponding to a plurality of aluminum electrolytic capacitors 110, and the sealed end of the aluminum electrolytic capacitor 110 passes through the corresponding mounting through hole 221, and the aluminum electrolytic capacitor is sealed with the mounting through hole 221. The sealed end of the aluminum electrolytic capacitor 110 is an end of the aluminum electrolytic capacitor 110 with an end cap. Such a setting, on the one hand, can make the height of the module set smaller, so as to facilitate the miniaturization design of the module volume, and on the other hand, the aluminum electrolytic capacitor 110 terminal is located outside the accommodating cavity, so as to avoid the electrolyte vapor in the accommodating cavity causing the normal aluminum electrolytic capacitor 110 in the capacitor assembly to short-circuit.

[0045] Please refer to the attached Figure 1 The sealing plate 220 is a second shell plate, the shell body 210 is a box-shaped structure formed by connecting a plurality of shell plates, and the shell plate arranged opposite to the sealing plate 220 in the shell body 210 is a first shell plate 211 .

[0046] Of course, in other embodiments, the aluminum electrolytic capacitor assembly 100 may be completely disposed in the accommodating cavity, and the sealing plate 220 is provided with positive and negative terminals and the positive and negative terminals are connected to the aluminum electrolytic capacitor 110 .

[0047] Please refer to the attached Figure 1 and 7 In some embodiments of the present application, the sealing plate 220 is an elastic structure, and the sealing plate 220 is embedded in the open end, wherein the mounting through hole 221 is in compression contact with the waist of the aluminum electrolytic capacitor 110. The waist of the capacitor is annular and is recessed relative to other positions, and the hole wall of the mounting through hole 221 is in compression contact with the waist, which not only makes the sealing performance between the mounting through hole 221 and the aluminum electrolytic capacitor 110 better, but also can limit the position of the sealing plate 220 through the waist.

[0048] Through the above arrangement, the sealing performance between the sealing plate 220 and the open end of the shell body 210 and between the sealing plate 220 and the aluminum electrolytic capacitor 110 is better, thereby improving the anti-leakage performance of the aluminum electrolytic capacitor 110.

[0049] The sealing plate 220 may be made of, but not limited to, ethylene propylene rubber, styrene butadiene rubber, silicone rubber, etc. The Shore hardness of the sealing plate is between 40-70, preferably between 45-60.

[0050] Preferably, an annular installation groove is provided on the inner side wall of the shell body 210, and the sealing plate 220 is extruded and inserted into the installation groove around it, so as to further improve the sealing performance of the sealing plate 220 to the opening end.

[0051] Of course, in other embodiments, the sealing plate 220 can be set as a rigid structure, such as a hard plastic material or a metal material. In this case, the sealing plate 220 covers the opening end, and a sealing ring can be provided between the sealing plate 220 and the opening end and between the mounting through hole 221 and the aluminum electrolytic capacitor 110 to increase the sealing performance between the two.

[0052] Please refer to the attached Figure 2-4 In some embodiments of the present application, at least one shell plate in the protective shell 200 is provided with at least one exhaust portion, the exhaust portion is provided with an exhaust hole 214, and a blocking plate 230 corresponding to the exhaust portion is provided in the accommodating cavity. The blocking plate 230 is arranged close to the exhaust portion and a gap 215 is formed between the blocking plate 230 and the exhaust hole 214.

[0053] Since the accommodating cavity in the protective shell 200 has good sealing performance, when the aluminum electrolytic capacitor 110 sprays electrolyte vapor, the air in the accommodating cavity is preferentially discharged to the outside of the module through the gap 215 and the exhaust hole 214 in sequence to avoid deformation of the protective shell 200 due to excessive internal pressure.

[0054] In addition, it should be understood that the exhaust hole 214 is connected to the accommodating cavity, and the electrolyte vapor is discharged. However, since the gap 215 is usually set to be small, the gap 215 can be but not limited to 1-3 cm, and the blocking plate 230 also has a condensation and liquefaction effect on the electrolyte vapor, the electrolyte vapor discharged through the exhaust hole 214 is very small, and the impact on other electronic devices in the external environment can be ignored.

[0055] Please refer to the attached Figure 1-2 Preferably, the shell body 210 includes two third shell plates 212 located between the first shell plate 211 and the second shell plate, the two third shells are respectively located on both sides of the aluminum electrolytic capacitor 110, the two third shells are both provided with exhaust parts and the exhaust parts include multiple exhaust holes 214, and two blocking plates 230 are provided on the first shell plate and the two blocking plates 230 are respectively arranged close to the two exhaust parts.

[0056] In order to better illustrate the anti-leakage performance of the aluminum electrolytic capacitor module provided in this application, the following test examples are provided below, specifically as follows:

[0057] Test Example 1:

[0058] Test piece: The aluminum electrolytic capacitor module includes a protective shell 200 and 10 aluminum electrolytic capacitors 110 connected in parallel. The protective shell 200 includes a shell body 210 and a sealing plate 220. The shell body 210 is provided with exhaust holes 214 on both shell plates along the length direction. The shell body 210 is rectangular and 10 aluminum electrolytic capacitors 110 are arranged in the shell body 210 and are arranged at intervals along the length direction of the shell body 210. A condensation piece is provided between each adjacent two aluminum electrolytic capacitors 110. The sealing plate 220 is made of ethylene propylene rubber and is embedded in the open end of the shell body 210. The sealed ends of the 10 aluminum electrolytic capacitors 110 extend out of the sealing plate 220 through the corresponding mounting through holes 221. Among them, the brand of the above-mentioned aluminum electrolytic capacitor 110 is Jianghai, the specification is 450v680uF and the size is 30mmx60mm.

[0059] Test method: Apply a 10A reverse voltage to the aluminum electrolytic capacitor module, and the power-on time is 5 minutes.

[0060] Test results: After 88 seconds of power-on, some pressure valves in the aluminum electrolytic capacitor assembly 100 were activated one after another. During the entire test process, pressure valves in four aluminum electrolytic capacitors 110 released pressure, and only a small amount of smoke came out of the exhaust hole 214.

[0061] Test Example 2:

[0062] The test piece is the same as the above test example 1.

[0063] Test method: Apply an overvoltage of 650V to the aluminum electrolytic capacitor module with a current limit of 10A, and the power-on time is 5 minutes.

[0064] Test results: After 56 seconds of power-on, some pressure valves in the aluminum electrolytic capacitor assembly 100 were activated one after another. During the entire test process, pressure valves in 7 aluminum electrolytic capacitors 110 released pressure, and only a small amount of smoke came out of the exhaust hole 214.

[0065] Test Example 3:

[0066] The structural difference between the test piece and the test piece in Test Example 1 is that a liquid cooling device is additionally provided and the liquid cooling device is connected to the liquid cooling channel 213 in the first shell plate 211 .

[0067] The test method is the same as the above-mentioned test example 1, and the liquid cooling device is started during the test.

[0068] Test results: During the entire test process, pressure relief occurred in the pressure valves of three aluminum electrolytic capacitors 110 , and no smoke was seen coming out of the exhaust holes 214 .

[0069] Test Example 4:

[0070] The test piece is the same as the above test example 3.

[0071] The test method is the same as the above-mentioned test example 2, and the liquid cooling device is started during the test.

[0072] Test results: During the entire test process, pressure relief occurred in the pressure valves of five aluminum electrolytic capacitors 110 , and no smoke was seen coming out of the exhaust holes 214 .

[0073] Comparative Example 1:

[0074] The structure of the test piece is different from that of the test piece in Test Example 1 in that the test piece is not provided with a condensation piece.

[0075] The test method is the same as that of Test Example 1 above.

[0076] Test results: After 100 seconds of power-on, some pressure valves in the aluminum electrolytic capacitor assembly 100 were activated one after another. During the entire test process, pressure valves in three aluminum electrolytic capacitors 110 released pressure, and a large amount of smoke came out after the pressure valves were triggered.

[0077] Comparative Example 2:

[0078] The test piece is the same as the comparative example 1 above.

[0079] The test method is the same as that of Test Example 2 above.

[0080] Test results: 32 seconds after power-on, some pressure valves in the aluminum electrolytic capacitor assembly 100 were activated one after another. During the entire test process, pressure valves in 5 aluminum electrolytic capacitors 110 released pressure, and a large amount of smoke came out after the pressure valves were triggered.

[0081] After measurement, the total electrolyte overflow and vaporized overflow in the above test examples 1-4 and comparative examples 1-2 are shown in the following table:

[0082]

[0083] It can be seen from the above table that, compared with the existing capacitor modules, the aluminum electrolytic capacitor module provided in the present application can significantly reduce the leakage of internal electrolyte vapor, thereby improving the safety of the aluminum electrolytic capacitor module.

[0084] It should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; the orientation words "inside" and "outside" refer to the inside and outside relative to the contours of the components themselves. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0085] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0086] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A leakage-proof aluminum electrolytic capacitor module, characterized in that: include: An aluminum electrolytic capacitor assembly, the aluminum electrolytic capacitor assembly comprising a plurality of aluminum electrolytic capacitors, wherein the aluminum electrolytic capacitors comprise an aluminum shell and the aluminum shell is provided with a pressure valve; A protective shell, wherein the protective shell includes a plurality of shell plates and the plurality of shell plates are arranged to form a receiving cavity, the plurality of aluminum electrolytic capacitors are arranged in the receiving cavity, a condensation assembly is arranged in the receiving cavity, the condensation assembly is used to condense the electrolyte vapor discharged from the pressure valve, the protective shell is provided with a liquid cooling channel, the liquid cooling channel is used to allow coolant to pass through to cool the condensation assembly, wherein the liquid cooling channel is located in at least one of the shell plates, the condensation assembly includes a plurality of condensation members arranged at intervals, the condensation members include a condensation column and a plurality of condensation plates arranged on the condensation column, the condensation column is arranged in the protective shell, and the plurality of condensation plates are distributed circumferentially along the condensation column, at least one shell plate in the protective shell is provided with at least one exhaust portion, the exhaust portion is provided with an exhaust hole, a blocking plate arranged corresponding to the exhaust portion is provided in the receiving cavity, the blocking plate is arranged close to the exhaust portion and a gap is formed between the blocking plate and the exhaust hole.

2. The leak-proof aluminum electrolytic capacitor module according to claim 1, characterized in that: The condensing assembly is arranged on at least one of the shell plates having the liquid cooling channel.

3. The leak-proof aluminum electrolytic capacitor module according to claim 1, characterized in that: The protective shell includes a first shell plate and a second shell plate arranged opposite to each other in the height direction of the aluminum electrolytic capacitor assembly, the condensation assembly is arranged between the first shell plate and the second shell plate, and the condensation assembly extends along the height direction of the aluminum electrolytic capacitor assembly.

4. The leak-proof aluminum electrolytic capacitor module according to claim 1, characterized in that: The plurality of aluminum electrolytic capacitors are dispersedly disposed in the accommodating cavity, and the plurality of condensing members include a first condensing member, which is located in a dispersed gap formed by the plurality of aluminum electrolytic capacitors.

5. The leak-proof aluminum electrolytic capacitor module according to claim 4, characterized in that: The plurality of condensation members further includes a second condensation member located in a gap between the aluminum electrolytic capacitor assembly and the protective case.

6. The leak-proof aluminum electrolytic capacitor module according to claim 1, characterized in that: The protective shell includes a shell body and a sealing plate, the shell body is provided with an open end, the sealing plate is arranged at the open end to seal the open end, the sealing plate is provided with a plurality of mounting through holes arranged one-to-one corresponding to the plurality of aluminum electrolytic capacitors, the sealed ends of the aluminum electrolytic capacitors pass through the corresponding mounting through holes, and the aluminum electrolytic capacitors are sealed and matched with the mounting through holes.

7. The leak-proof aluminum electrolytic capacitor module according to claim 6, characterized in that: The sealing plate is an elastic structure, and the sealing plate is embedded in the opening end, wherein the mounting through hole is in compression contact with the waist portion of the aluminum electrolytic capacitor.

Images