A conductive sheet module of a filter and a filter
By employing a fixed clamping plate and clamp design in the filter, the problems of difficult disassembly and high maintenance costs of existing filters are solved, realizing reversible disassembly and convenient maintenance of components, and meeting the filtering performance requirements under complex working conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI VICO PRECISION MOLD & PLASTICS
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-23
AI Technical Summary
Existing filters are fixed by adhesive bonding and potting processes, which makes disassembly difficult, maintenance costs high, and makes it difficult to meet the high requirements for filtering performance under complex operating conditions.
The first conductive sheet, the insulating frame, and the second conductive sheet, which are stacked together, are pressed into the base shell by a fixed clamping plate, which makes reverse disassembly feasible. The design of the clamp and the fixed clamping plate facilitates component replacement and reduces after-sales maintenance costs.
This achieves vibration resistance for the filter while facilitating individual component replacement and maintenance, thus reducing maintenance costs.
Smart Images
Figure CN224401499U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filters, and further to a conductive sheet module for a filter and a filter. Background Technology
[0002] A filter consists of a filtering circuit composed of capacitors, inductors, and resistors. It can effectively filter out specific frequencies or frequencies outside of those frequencies in a power supply line, resulting in a power signal of a specific frequency, or eliminating a power signal of a specific frequency. A magnetic core is a common structure in filters, used to suppress high-frequency noise in the circuit, utilizing the heat dissipation generated by its high-frequency current to suppress high-frequency noise.
[0003] With the continuous development of technology, the application of filters has become increasingly widespread, especially in recent years with the continuous development of new energy vehicles, which has led to a significant demand for filters. As the operating conditions of application equipment become more complex, higher requirements are usually placed on the filtering performance of filters, and the magnetic core of filters typically needs to be larger. Currently, the structure of filters is usually fixed using adhesive bonding and potting processes, which makes disassembly difficult and subsequent maintenance costs high. Utility Model Content
[0004] To address the aforementioned technical problems, the purpose of this utility model is to provide a conductive sheet module for a filter. A fixed clamping plate is used to press the stacked first conductive sheet, insulating frame, and second conductive sheet into the base shell. While ensuring the vibration resistance performance of the filter, it also enables reverse disassembly and allows for individual replacement of components, thereby reducing the after-sales maintenance cost of the filter components.
[0005] To achieve the above objectives, the present invention aims to provide a conductive sheet module for a filter, comprising:
[0006] Base shell;
[0007] An insulating frame, wherein the insulating frame has a first receiving groove and a second receiving groove stacked on both sides;
[0008] A first conductive sheet is mounted in the first receiving groove;
[0009] The second conductive sheet is mounted in the second receiving groove;
[0010] A fixed pressure plate is provided, which has a first pressing end and a fixed end. The fixed end is installed on the base shell, and there is a compression space between the first pressing end and the base shell. The stacked insulating frame, the first conductive sheet, and the second conductive sheet are all installed in the compression space.
[0011] In some preferred embodiments, the conductive sheet module of the filter further includes a clamp;
[0012] The insulating frame has two oppositely arranged locking blocks on both sides, and the two ends of the clamp are respectively locked to the two locking blocks. The second conductive sheet is fixed between the clamp and the insulating frame.
[0013] In some preferred embodiments, the filter conductive sheet module further includes a first electrode sheet and a second electrode sheet.
[0014] The first conductive sheet has a first mating position at a preset position on the side away from the second conductive sheet, and the second conductive sheet has a second mating position at a preset position on the side away from the first conductive sheet.
[0015] One end of the first electrode sheet is disposed at the first bonding position and located between the first conductive sheet and the fixing plate, and the other end extends to the outside of the first conductive sheet in a direction away from the fixing plate; one end of the second electrode sheet is stacked at the second bonding position, and the other end extends to the outside of the second conductive sheet in a direction away from the fixing plate.
[0016] In some preferred embodiments, the first receiving groove has a first notch corresponding to the position of the first electrode sheet, and the end of the first electrode sheet away from the fixing plate extends out of the first notch;
[0017] The second receiving groove has a second notch corresponding to the position of the second electrode sheet, and the end of the second electrode sheet away from the second conductive sheet extends out of the second notch.
[0018] In some preferred embodiments, the portion of the clamp corresponding to the second conductive sheet includes a first clamp rib and a second clamp rib, with a clamp channel between the first clamp rib and the second clamp rib, and the second electrode sheet located within the clamp channel.
[0019] In some preferred embodiments, the first mating position has a first limiting hole, the first electrode sheet has a first through hole, and the fixing plate has a first fixing protrusion, which extends through the first through hole into the first limiting hole.
[0020] The second mating position has a second limiting hole, the second electrode sheet has a second through hole, and the base shell has a second fixing protrusion, which extends through the second through hole into the second limiting hole.
[0021] In some preferred embodiments, the conductive sheet module of the filter further includes a circuit board disposed above the base shell and electrically connected to the first electrode sheet and the second electrode sheet;
[0022] The filter conductive sheet module further includes a housing disposed outside the base shell, and the circuit board is detachably mounted on the housing.
[0023] In some preferred embodiments, the fixing plate further has a second pressing end extending from the fixing end toward the side away from the first pressing end, the second pressing end abutting against the housing.
[0024] In some preferred embodiments, the insulating frame includes a first insulating frame and a second insulating frame. The first insulating frame has a first snap-fit end, and the second insulating frame has a second snap-fit end. The first snap-fit end has a first snap tongue and a first snap groove, and the second snap-fit end has a second snap tongue and a second snap groove. The first snap tongue is installed in the second snap groove, and the second snap tongue is installed in the first snap groove. The first snap tongue and the second snap tongue are stacked.
[0025] According to another aspect of this application, a filter is further provided, including the conductive sheet module of the filter described in any of the preceding claims. Attached Figure Description
[0026] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.
[0027] Figure 1 This is a first-view perspective three-dimensional structural diagram of the filter according to a preferred embodiment of the present invention;
[0028] Figure 2 This is a three-dimensional structural diagram of the filter from a second perspective of a preferred embodiment of the present invention.
[0029] Figure 3 This is a schematic diagram of the exploded structure of a filter according to a preferred embodiment of the present invention;
[0030] Figure 4 This is another exploded structural diagram of the filter according to a preferred embodiment of the present invention;
[0031] Figure 5 This is a three-dimensional structural schematic diagram of the conductive sheet module of the filter according to a preferred embodiment of the present invention.
[0032] Figure 6 This is a three-dimensional structural schematic diagram of the conductive sheet module of the filter according to a preferred embodiment of the present invention.
[0033] Figure 7 This is an exploded structural diagram of the conductive sheet module of the filter according to a preferred embodiment of the present invention.
[0034] Figure 8 This is a schematic cross-sectional view of the filter cut-off portion structure according to a preferred embodiment of the present invention.
[0035] Figure 9 This is a bottom view of the filter structure according to a preferred embodiment of the present invention;
[0036] Figure 10 yes Figure 9 Schematic diagram of the cross-sectional structure of line AA in the middle;
[0037] Figure 11 This is a three-dimensional structural diagram of the fixed pressure plate of the filter according to a preferred embodiment of the present invention;
[0038] Figure 12 This is a three-dimensional structural diagram of the first magnetic core plate of the filter according to a preferred embodiment of the present invention;
[0039] Figure 13 This is a schematic diagram of the circuit structure of the filter module of the filter according to a preferred embodiment of the present invention. Detailed Implementation
[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0041] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."
[0042] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0043] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0044] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0045] Reference manual attached Figures 1 to 13 This application provides a filter 100, which includes a housing 10, a conductive sheet module 20, and a filter module 30. The housing 10 further includes a base shell 11 and an outer shell 12. The base shell 11 has a receiving space 110, and the outer shell 12 has adjacently arranged base shell grooves 121 and capacitor grooves 122. The base shell 11 is mounted in the base shell grooves 121, or alternatively, the outer shell 12 is disposed outside the base shell 11. The conductive sheet module 20 is mounted in the receiving space 110.
[0046] The filter module 30 includes at least one annular magnetic core 31 and at least one capacitor. The at least one annular magnetic core 31 is installed in the receiving space 110 and surrounds the outside of the conductive sheet module 20. The at least one capacitor is electrically connected to the conductive sheet module 20 and is installed in the capacitor slot 122.
[0047] The base shell groove 121 and the capacitor groove 122 of the outer casing 12 are arranged adjacent to each other. At least one annular magnetic core 31 is installed in the receiving space 110, and at least one capacitor is installed in the capacitor groove 122. Installing the at least one annular magnetic core 31 and the at least one capacitor in different spaces reduces mutual interference between them during operation. Furthermore, installing the at least one annular magnetic core 31 and the at least one capacitor in different spaces facilitates modular design of the filter 100, improving the compactness of the filter 100 structure and reducing its size.
[0048] refer to Figure 1The conductive sheet module 20 includes a conductive sheet 21, which includes a current inflow end 211, a current outflow end 212, and a conductive sheet body 213 located between the current inflow end 211 and the current outflow end 212. The conductive sheet body 213 is mounted in the receiving space 110, and the current inflow end 211 and the current outflow end 212 extend to the outside of the receiving space 110. It should be noted that the current inflow end 211 of the conductive sheet 21 is closer to the power source (or connected to the power source) during use, and the current outflow end 212 is closer to the driving component (or connected to the driving component), such as a motor.
[0049] The filtering module 30 includes at least one external filtering element 33 and at least one internal filtering element 34. The outer shell 12 is a conductive shell. One end of the at least one external filtering element 33 is electrically connected to the conductive sheet 21, and the other end is electrically connected to the conductive shell and grounded. One end of the at least one internal filtering element 34 is electrically connected to the current inflow terminal 211, and the other end is adapted to be connected to the application device and grounded.
[0050] It is worth mentioning that the built-in filter element 34 is electrically connected to the housing 12 and grounded. In actual use, the housing 12 is connected to the application device and grounded. The external filter element 33 is disposed on the outside of the housing 12. In actual use, the external filter element 33 can be directly connected to the grounding terminal of the application device and grounded without having to go through the housing 12, which can reduce the resistance to the flow of grounding current.
[0051] refer to Figure 3 and Figure 4 Specifically, the conductive sheet 21 includes a first conductive sheet 21a and a second conductive sheet 21b. The first conductive sheet 21a has a first current inflow end 211a, a first current outflow end 212a, and a first conductive sheet body 213a located between the first current inflow end 211a and the current outflow end 212a.
[0052] The second conductive sheet 21b has a second current inflow end 211b, a second current outflow end 212b, and a second conductive sheet body 213b located between the second current inflow end 211b and the second current outflow end 212b.
[0053] The at least one external filter element 33 includes a first external capacitor 331 and a second external capacitor 332. One end of the first external capacitor 331 is electrically connected to the first current inflow terminal 211a, and the other end is adapted to be connected to the ground terminal of the application device. One end of the second external capacitor 332 is electrically connected to the second current inflow terminal 211b, and the other end is adapted to be connected to the ground terminal of the application device.
[0054] The at least one built-in filter element 34 includes a first built-in capacitor 341 and a second built-in capacitor 342. One end of the first built-in capacitor 341 is electrically connected to the first conductive sheet body 213a, and one end of the second built-in capacitor 342 is electrically connected to the second conductive sheet body 213b. The first built-in capacitor 341 and the second built-in capacitor 342 are respectively installed in the capacitor slot 122.
[0055] refer to Figure 3 , Figure 4 as well as Figure 13 The at least one built-in filter element 34 further includes a third built-in capacitor 343 and a fourth built-in capacitor 344. One end of the third built-in capacitor 343 is electrically connected to the first conductive sheet 21a, and the other end is electrically connected to the conductive outer shell. One end of the fourth built-in capacitor 344 is electrically connected to the second conductive sheet 21b, and the other end is electrically connected to the conductive outer shell. Preferably, there are two of each of the third capacitor 343 and the fourth capacitor 344.
[0056] The filtering module 30 further includes a fifth capacitor 345, one end of which is electrically connected to the first conductive sheet 21a, and the other end is electrically connected to the second conductive sheet 21b. The first built-in capacitor 341, the second built-in capacitor 342, the third built-in capacitor 343, the fourth built-in capacitor 344, and the fifth capacitor 345 form a first-stage filtering structure. It should be noted that the first built-in capacitor 341 and the second built-in capacitor 342 form one group, and the third built-in capacitor 343 and the fourth built-in capacitor 344 form another group, and the two groups are connected in parallel.
[0057] refer to Figure 3 , Figure 4 as well as Figure 13 Furthermore, the at least one built-in filter element 34 also includes a sixth built-in capacitor 346 and a seventh built-in capacitor 347. One end of the sixth built-in capacitor 346 is electrically connected to the first conductive sheet 21a and the other end is electrically connected to the conductive outer shell. One end of the seventh built-in capacitor 347 is electrically connected to the second conductive sheet 21b and the other end is electrically connected to the conductive outer shell.
[0058] The filtering module 30 further includes an eighth capacitor 348 and a ninth capacitor 349. One end of the eighth capacitor 348 is electrically connected to the first conductive sheet 21a, and the other end is electrically connected to the second conductive sheet 21b. One end of the ninth capacitor 349 is electrically connected to the first conductive sheet 21a, and the other end is electrically connected to the second conductive sheet 21b. The sixth built-in capacitor 346, the seventh built-in capacitor 347, the eighth capacitor 348, and the ninth capacitor 349 form a third-stage filtering structure. Preferably, the eighth capacitor 348 and the ninth capacitor 349 are connected in parallel.
[0059] refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 4 Furthermore, the annular magnetic core 31 of the filtering module 30 also includes a first annular magnetic core 311 and a second annular magnetic core 312. The first annular magnetic core 311 and the second annular magnetic core 312 surround the outer side of the conductive sheet body 213 and are spaced apart between the first-stage filtering structure and the third-stage filtering structure. The first annular magnetic core 311 and the second annular magnetic core 312 form a second-stage filtering structure.
[0060] Furthermore, the base shell 11 has a first receiving groove 141 and a second receiving groove 142 arranged adjacent to each other. The first annular magnetic core 311 is installed in the first receiving groove 141, and the second annular magnetic core 312 is installed in the second receiving groove 142. The filter module 30 also has an installation channel passing through the first annular magnetic core 311 and the second annular magnetic core 312.
[0061] The filter 100 further includes a first magnetic core clamping plate 37, which has a first connecting end 371 and a second connecting end 372. The first magnetic core clamping plate 37 is mounted in the mounting channel, and the first connecting end 371 and the second connecting end 372 extend out of the mounting channel and are fixedly connected to the base shell 11. The first magnetic core clamping plate 37 can fix the first annular magnetic core 311 and the second annular magnetic core 312 to the base shell 11, thereby improving the stability of the installation of the first annular magnetic core 311 and the second annular magnetic core 312.
[0062] refer to Figure 3The base shell 11 has a first limiting protrusion 151 and a second limiting protrusion 152 spaced apart at its bottom, forming a receiving groove between the first limiting protrusion 151 and the second limiting protrusion 152. The base shell 11 includes a first sidewall 161 and a second sidewall 162, and also includes a first limiting partition 171 extending from the first sidewall 161 toward the receiving groove. The first limiting partition 171 divides the receiving groove into a first receiving groove 141 and a second receiving groove 142. A communication port connecting the first receiving groove 141 and the second receiving groove 142 is provided between the first limiting partition 171 and the second sidewall 162. The width of the communication port is adapted to the width of the mounting channel, or in other words, the width of the communication port is adapted to the width of the conductive sheet module 30.
[0063] The second sidewall 162 has a second limiting partition 172 extending into the receiving groove. The first limiting partition 171 and the second limiting partition 172 are disposed opposite to each other, and the communication opening is formed between the first limiting partition 171 and the second limiting partition 172. The receiving groove is divided into the first receiving groove 141 and the second receiving groove 142 by the first partition 171 and the second partition 172. It can be understood that when the first annular magnetic core 311 is installed in the first receiving groove 141 and the second annular magnetic core 312 is installed in the second receiving groove 142, the first limiting partition 171 and the second limiting partition 172 can limit and fix the first annular magnetic core 311 and the second annular magnetic core 312.
[0064] refer to Figure 3 Furthermore, the top of the first limiting boss 151 has a first fixing groove 1510, and the top of the second limiting boss 152 has a second fixing groove 1520; the first connecting end 371 of the first magnetic core pressing plate 37 is installed in the first fixing groove 1510, and the second connecting end 372 is installed in the second fixing groove 1520. The first fixing groove 1510 can increase the stability of the installation between the first connecting end 371 and the first limiting boss 151, and the second fixing groove 1520 can increase the stability of the installation between the second connecting end 372 and the second limiting boss 152.
[0065] The first magnetic core clamping sheet 37 has a first limiting baffle 373 extending towards the bottom of the base shell 11 at a position corresponding to the first limiting partition 171 and the second limiting partition 172. At least a portion of the first annular magnetic core 311 and at least a portion of the second annular magnetic core 312 are respectively located on both sides of the first limiting baffle 373. The first limiting baffle 373 can limit the first annular magnetic core 311 and the second annular magnetic core 312 in the length extension direction of the conductive sheet module 20, thereby improving the stability of the installation of the first annular magnetic core 311 and the second annular magnetic core 312.
[0066] Furthermore, the bottom of the first fixing groove 1510 has a first fixing hole 1511, and the first connecting end 371 has a first protrusion 3710, which extends into the first fixing hole 1511. The first protrusion 3710 is fixedly connected to the outer shell 12 by screws, thereby fixing the first magnetic core plate 37, the base shell 11, and the outer shell 12 together. The first protrusion 3710 extends into the first fixing hole 1511, which can limit the first magnetic core plate 37 and prevent the first magnetic core plate 37 from sliding relative to the base shell 11.
[0067] The bottom of the second fixing groove 1520 has a second fixing hole, and the second connecting end 372 has a second protrusion 3720 that extends into the second fixing hole. The second protrusion 3720 is fixedly connected to the outer shell 12 by screws, thereby fixing the first magnetic core plate 37, the base shell 11, and the outer shell 12 together. The second protrusion 3720 extends into the second fixing hole, which can limit the first magnetic core plate 37 and prevent it from sliding relative to the base shell 11.
[0068] refer to Figure 4 The base shell 11 has a first bottom opening 1410 communicating with the first receiving groove 141 and a second bottom opening 1420 communicating with the second receiving groove 142. The outer shell 12 outside the base shell 11 closes the first bottom opening 1410 and the second bottom opening 1420. The first bottom opening 1410 and the second bottom opening 1420 allow the outer shell 12 to contact the first annular magnetic core 311 and the second annular magnetic core 312, thereby improving heat dissipation efficiency.
[0069] The annular magnetic core 31 of the filtering module 30 further includes a third annular magnetic core 313, which surrounds the outer side of the conductive sheet body 213. The third-level filtering structure is located between the third annular magnetic core 313 and the second-level filtering structure. The third annular magnetic core 313 forms a fourth-level filtering structure. That is, the fourth-level filtering structure formed by the third annular magnetic core 313 is located on the side of the third-level filtering structure away from the second-level filtering structure.
[0070] The base shell 11 also has a third receiving groove 143, which is adjacent to the second receiving groove 142, and the third annular magnetic core 313 is installed in the third receiving groove 143. The magnetic core module also includes a second magnetic core plate (not shown in the figure), which passes through the third annular magnetic core 143 and is fixedly connected to the base shell 11 at both ends. Preferably, the first magnetic core plate 37 is integrally connected to the second magnetic core plate.
[0071] refer to Figure 3 , Figure 4 as well as Figure 13 Furthermore, the filtering module 30 also includes a tenth capacitor 340, one end of which is electrically connected to the first conductive sheet 21a, and the other end is electrically connected to the second conductive sheet 21b. The tenth capacitor 340 forms a fifth-level filtering structure, and the first external capacitor 331 and the second external capacitor 332 form a sixth-level filtering structure. The fifth-level filtering structure is located between the fourth-level filtering structure and the sixth-level filtering structure.
[0072] Furthermore, the base shell 11 has a first external capacitor slot 181 and a second external capacitor slot 182 on the side near the current inflow end 211 of the conductive sheet 21. The first external capacitor 331 is installed in the first external capacitor slot 181, and the second external capacitor 332 is installed in the second external capacitor slot 182. The current inflow terminal 211 is also provided with a first external electrode plate 191, a second external electrode plate 192, a connector 193, and an external circuit board (not shown in the figure). One end of the first external electrode plate 191 is electrically connected to the first conductive plate 21a, and the other end is electrically connected to the external circuit board. One end of the second external electrode plate 192 is electrically connected to the second conductive plate 21b, and the other end is electrically connected to the external circuit board. The first external capacitor 331 and the second external capacitor 332 are both electrically connected to the external circuit board. One end of the connector 193 extends out of the base shell 11, and the other end is electrically connected to the circuit board. The first external capacitor 331 and the second external capacitor 332 are electrically connected to the outside through the connector 193.
[0073] Preferably, the first toroidal core 311 and the second toroidal core 312 include nickel-plated cores to reduce noise in the mid-to-high frequency band, such as noise in the range of 3 kHz to 20 kHz, and the third toroidal core 313 includes a high-permeability core, such as a manganese core, to reduce noise in the mid-to-low frequency band, such as noise in the range of 300 Hz to 3 kHz.
[0074] Preferably, the first built-in capacitor 341 and the second built-in capacitor 342 are small-value Y capacitors; the fifth capacitor 345 is a small-value X capacitor; the third built-in capacitor 343 and the fourth built-in capacitor 344 are large-value Y capacitors; the sixth built-in capacitor 346 and the seventh built-in capacitor 347 are medium-value Y capacitors; the eighth capacitor 348 is a small-value X capacitor; the ninth capacitor 349 is a medium-value X capacitor; the tenth capacitor 340 is a large-value X capacitor; and the first external capacitor 331 and the second external capacitor 332 are small-value Y capacitors. Preferably, the range of small-value Y capacitors and small-value X capacitors is 0.1nF to 5nF, the range of medium-value X capacitors and medium-value Y capacitors is 5nF to 150nF, and the range of large-value Y capacitors and large-value X capacitors is 150nF to 300nF.
[0075] refer to Figure 1 and Figure 2 Specifically, the filtering module 30 further includes a circuit board 35, which is electrically connected to the first conductive sheet 21a and the second conductive sheet 21b. The circuit board 35 is also electrically connected to the built-in filtering element 34, the fifth capacitor 345, the eighth capacitor 348, the ninth capacitor 349 and the tenth capacitor 340. The circuit board 35 is also electrically connected to the outer casing 12.
[0076] Specifically, the circuit board 35 includes a first circuit board 351, a second circuit board 352, and a third circuit board 353. The capacitor slot 122 includes a first capacitor slot 122a, a second capacitor slot 122b, and a third capacitor slot 122c.
[0077] The first built-in capacitor 341, the second built-in capacitor 342, the third built-in capacitor 343, the fourth built-in capacitor 344, and the fifth capacitor 345 are all mounted in the first capacitor slot 122a and are all electrically connected to the first circuit board 351. Preferably, the first circuit board 351 is disposed at the upper opening of the first capacitor slot 122a and can also be used to seal the opening of the first capacitor slot 122a.
[0078] The sixth built-in capacitor 346, the seventh built-in capacitor 347, the eighth capacitor 348, and the ninth capacitor 349 are all mounted in the second capacitor slot 122b and are all electrically connected to the second circuit board 352. Preferably, the second circuit board 352 is disposed at the upper opening of the second capacitor slot 122b and can also be used to block the upper opening of the second capacitor slot 122b.
[0079] The tenth capacitor 340 is mounted in the third capacitor slot 122c and electrically connected to the third circuit board 353. The third circuit board 353 is disposed at the upper opening of the third capacitor slot 122c and can also be used to block the upper opening of the third capacitor slot 122c.
[0080] Preferably, the first capacitor slot 122a and the third capacitor slot 122c are disposed on the same side of the conductive sheet module 20, and the second capacitor slot 122b is disposed on the other side of the conductive sheet module 20. This allows the first circuit board 351, the second circuit board 352, and the third circuit board 353 to be arranged more compactly, which helps to reduce the overall size of the filter 100. It is understood that in some modified embodiments, the first capacitor slot 122a, the second capacitor slot 122b, and the third capacitor slot 122c may also be disposed on the same side of the conductive sheet module 20.
[0081] refer to Figure 7 Furthermore, the conductive sheet module 20 further includes an electrode sheet 22, one end of which is electrically connected to the conductive sheet 21 and the other end is electrically connected to the circuit board 35, so as to realize the electrical connection between the circuit board 35 and the conductive sheet 21.
[0082] Specifically, the electrode sheet 22 includes a first electrode sheet 221 and a second electrode sheet 222. The circuit board 35 is disposed above the base shell 11 and electrically connected to the first electrode sheet 221 and the second electrode sheet 222. One end of the first electrode sheet 221 is electrically connected to the first conductive sheet 21a, and the other end is electrically connected to the circuit board 35. One end of the second electrode sheet 222 is electrically connected to the second conductive sheet 21b, and the other end is electrically connected to the circuit board 35. Further, there are three first electrode sheets 221, which are electrically connected to the first circuit board 351, the second circuit board 352, and the third circuit board 353, respectively. There are also three second electrode sheets 222, which are electrically connected to the first circuit board 351, the second circuit board 352, and the third circuit board 353, respectively.
[0083] refer to Figure 3The filtering module 30 further includes several fasteners 36, which fix the circuit board 35 to the housing 12 and establish an electrical connection between the circuit board 35 and the housing 12, thereby grounding the built-in filtering element 34. The circuit board 35 can be detachably mounted to the housing 12 using the fasteners 36. Specifically, the first circuit board 351, the second circuit board 352, and the third circuit board 353 are all fixed to the housing 12 using the fasteners 36. Specifically, contact points are provided around the holes on the circuit board 35 through which the fasteners 36 pass. After installation, one end of the fastener 36 connects to the contact point, and the other end contacts and electrically connects to the housing 12, thus simultaneously fixing and electrically connecting the two components.
[0084] refer to Figure 11 Furthermore, the conductive sheet module 20 further includes an insulating frame 23 and a fixing plate 24. The insulating frame 23 has a first receiving groove 231 and a second receiving groove 232 stacked on both sides. The first conductive sheet 21a is installed in the first receiving groove 231, and the second conductive sheet 21b is installed in the second receiving groove 232. The fixing plate 24 has a first pressing end 241 and a fixing end 242. The fixing end 242 is installed on the base shell 11, and there is a compression space between the first pressing end 241 and the base shell 11. The stacked insulating frame 23, the first conductive sheet 21a, and the second conductive sheet 21b are all installed in the compression space. The end of the fixing end 242 connected to the base shell 11 has a plurality of anti-rotation protrusions 2421. The base shell 11 has a corresponding anti-rotation groove at a preset position. The anti-rotation protrusions 2421 and the anti-rotation groove cooperate with each other to prevent the fixing plate 24 from rotating.
[0085] Preferably, the second conductive sheet 21b is disposed between the insulating frame 23 and the base shell 11, the first conductive sheet 21a is disposed on the side of the insulating frame 23 away from the base shell 11, and the first pressing end 241 of the fixing plate 24 abuts against the top surface of the first conductive sheet 21a to press the first conductive sheet 21a, the insulating frame 23 and the second conductive sheet 21b into the base shell.
[0086] Preferably, the fixing end 242 of the fixing plate 24 is detachably installed on the base shell 11, thereby making the insulating frame 23, the first conductive plate 21a and the second conductive plate 21b detachable and replaceable, and can be replaced when damaged, thus reducing costs.
[0087] The fixing plate 24 also has a second pressing end 244 extending from the fixing end 242 toward the side away from the first pressing end 241, and the second pressing end 244 abuts against the outer shell 12. It can be understood that the limiting cooperation between the second pressing end 244 of the fixing plate 24 and the outer shell 12 can limit the downward pressing position of the fixing plate 24 toward the first conductive sheet 21a, and avoid excessive compression of the first electrode sheet 221 and the first conductive sheet 21a.
[0088] refer to Figure 7 The conductive sheet module 20 further includes a clamp 25. The insulating frame 23 has two opposing locking blocks 233 on both sides. The two ends of the clamp 25 are respectively engaged with the two locking blocks 233. The second conductive sheet 21b is fixed between the clamp 25 and the insulating frame 23. Preferably, the clamp 25 is disposed between the insulating frame 23 and the base shell 11. Before fixing the conductive sheet module 20 to the base shell 11, the second conductive sheet 21b is first fixed to the second receiving groove 232 of the insulating frame 23 by the clamp 25, thereby achieving pre-fixation of the second conductive sheet 21b to the insulating frame 23, thus facilitating the fixing of the conductive module 20 to the base shell 11. Preferably, the number of clamps 25 can be two or more and spaced apart to fix the second conductive sheet 21b at different positions. Optionally, in some modified embodiments, a plurality of clamps 25 are also provided on the side of the insulating frame 23 away from the base shell 11 to fix the first conductive sheet 21a to the insulating frame 23.
[0089] Specifically, the portion of the clamp 25 corresponding to the second conductive sheet 21b includes a first clamp rib 251 and a second clamp rib 252. A clamp channel 250 is formed between the first clamp rib 251 and the second clamp rib 252, and the second electrode sheet 222 is located within the clamp channel 250. In other words, in this application, the clamp 25 has a hollowed-out structure in the middle. The second electrode sheet 222 is electrically connected to the second conductive sheet 21b through the hollowed-out structure in the middle of the clamp 25, thereby making the structure more compact and helping to reduce the overall volume of the filter 100.
[0090] refer to Figure 7Furthermore, the first conductive sheet 21a has a first mating position 214a at a predetermined position on the side away from the second conductive sheet 21b, and the second conductive sheet 21b has a second mating position 214b at a predetermined position on the side away from the first conductive sheet 21a. One end of the first electrode sheet 221 is disposed at the first mating position 214a and located between the first conductive sheet 21a and the fixing plate 24, and the other end extends away from the fixing plate 24 to the outside of the first conductive sheet 21a; one end of the second electrode sheet 222 is stacked on the second mating position 214b, and the other end extends away from the fixing plate 24 to the outside of the second conductive sheet 21b.
[0091] One end of the first electrode sheet 221 is located between the first mating position 214a and the first pressing end 241. The first electrode sheet 221 is fixed to the first mating position 214a of the first conductive sheet 21a by the first pressing end 241 of the fixing plate 24.
[0092] refer to Figure 7 Furthermore, the first mating position 214a has a first limiting hole 2140a, the first electrode sheet 221 has a first through hole 2210, and the fixing plate 24 has a first fixing protrusion 243, which extends through the first through hole 220 and into the first limiting hole 2140a. It can be understood that the limiting engagement between the first fixing protrusion 243 and the first through hole 2210 and the first limiting hole 2140a enables the first electrode sheet 221 to be limited along the length extension direction of the first conductive sheet 21a, thereby improving the stability of the first electrode sheet 221 installation.
[0093] Furthermore, the second mating position 214b has a second limiting hole 2140b, the second electrode sheet 222 has a second through hole 2220, and the base shell 11 has a second fixing protrusion 111, which extends through the second through hole 2220 and into the second limiting hole 2140b. It can be understood that the limiting engagement between the second fixing protrusion 111 and the second through hole 2220 and the second limiting hole 2140b enables the second electrode sheet 222 to be limited along the length extension direction of the second conductive sheet 21b, thereby improving the stability of the second electrode sheet 222 installation.
[0094] refer to Figure 7The first receiving groove 231 has a first notch 2311 corresponding to the position of the first electrode piece 221, and one end of the first electrode piece 221 away from the fixing plate 24 extends out of the first notch 2311. It should be noted that by providing the first notch 2311, it is convenient for the first electrode piece 221 and the first conductive piece 21a to contact and be electrically connected when they are stacked. The second receiving groove 232 has a second notch 2321 corresponding to the position of the second electrode piece 222, and one end of the second electrode piece 222 away from the second conductive piece 21b extends out of the second notch 2321. It should be noted that by providing the second notch 2321, it is convenient for the second electrode piece 222 and the second conductive piece 21b to contact and be electrically connected when they are stacked.
[0095] The insulating frame 23 further includes a plurality of reinforcing ribs 234 disposed on the sidewalls of the first receiving groove 231 and the second receiving groove 232 and extending along the depth direction of the first receiving groove 231 and the second receiving groove 232. The reinforcing ribs 234 can improve the stability of the sidewalls of the first receiving groove 231 and the second receiving groove 232.
[0096] refer to Figure 5 , Figure 6 as well as Figure 7 The first conductive sheet 21a includes a first substrate 215a and a first bent sheet 216a. The second conductive sheet 21b includes a second substrate 215b and a second bent sheet 216b. The first substrate 215a and the second substrate 215b are respectively stacked on the insulating frame 23, and the first substrate 215a and the second substrate 215b are stacked along the depth direction of the receiving space 110. One end of the first bent sheet 216a is stacked with one end of the first substrate 215a, and one end of the second bent sheet 216b is stacked with one end of the second substrate 215b. The end of the first bent sheet 216a away from the first substrate 215a and the end of the second bent sheet 216b away from the second substrate 215b are offset along the depth direction of the receiving space 110, thereby facilitating the electrical connection of the first conductive sheet 21a and the second conductive sheet 21b with the outside.
[0097] refer to Figure 8The insulating frame 23 includes a first insulating frame 235a and a second insulating frame 235b. The first insulating frame 235a has a first snap-fit end 2351a, and the second insulating frame 235b has a second snap-fit end 2351b. The first snap-fit end 2351a has a first snap tongue 2352a and a first snap groove 2353a, and the second snap-fit end 2351b has a second snap tongue 2352b and a second snap groove 2353b. The first snap tongue 2352a is installed in the second snap groove 2353b, and the second snap tongue 2352b is installed in the first snap groove 2353a. The first snap tongue 2352a and the second snap tongue 2352b are stacked.
[0098] It should be noted that in the actual production process, the overlapping portions of the first bent piece 216a and the first base piece 215a are usually connected by welding, and the welding position can be marked as position one; the overlapping portions of the second bent piece 216b and the second base piece 215b are connected by welding, and the welding position is marked as position two. The position where the first latch 2532a and the second latch 2532b engage with each other is position three. Position three is offset from positions one and two along the depth direction of the receiving space 110. Before welding, the first insulating frame 235a is not inserted between the first base piece 215a and the second base piece 215b, and the lower part of positions one and two has holes without the insulating frame 23, thereby avoiding damage to the insulating frame 23 during welding. After welding, the first insulating frame 253a is inserted into the space between the first bent piece 215a and the second bent piece 215b and engages with the second insulating frame 235b.
[0099] It is understood that, in some embodiments, the base shell 11, the outer shell 12, and the conductive sheet module 20 can also be defined as a heat dissipation structure. (See reference) Figure 3 Furthermore, the outer casing 12 has at least one heat-conducting portion 123 at a predetermined position. The heat-conducting portion 123 has at least one heat-conducting protrusion 1231 extending into the receiving space 110. The heat-conducting protrusion 1231 abuts against the first conductive sheet 21a or the second conductive sheet 21b. Through the contact between the heat-conducting protrusion 1231 and the first conductive sheet 21a or the second conductive sheet 21b, the heat generated by the first conductive sheet 21a or the second conductive sheet 21b can be dissipated, which helps to dissipate heat from the first conductive sheet 21a or the second conductive sheet 21b.
[0100] Specifically, the outer casing 12 has a first heat-conducting portion 123a and a second heat-conducting portion 123b. The first heat-conducting portion has a first heat-conducting boss 1231a, and the second heat-conducting portion 123b has a second heat-conducting boss 1231b. The first heat-conducting boss 1231a abuts against the first current-inflow end 211a, and the second heat-conducting boss 1231b abuts against the second current-inflow end 211b. It should be noted that the first current-inflow end 211a refers to the end of the first conductive sheet 21a where the first bent piece 216a is located, and the second current-inflow end 211b refers to the end of the second conductive sheet 21b where the second bent piece 216b is located. Due to the stacked arrangement of the first bent piece 216a and the first substrate 215a, and the stacked arrangement of the second bent piece 216b and the second substrate 215b, current tends to converge at the first current inflow end 211a and the second current inflow end 211b, generating more heat. By correspondingly arranging the first heat-conducting part 123a and the second heat-conducting part 123b, the heat dissipation at the first current inflow end 211a and the second current inflow end 211b can be accelerated.
[0101] The heat dissipation structure further includes a first thermally conductive pad 131 and a second thermally conductive pad 132. The first thermally conductive pad 131 is disposed between the first thermally conductive protrusion 1231a and the first current inflow terminal 211a, and the second thermally conductive pad 132 is disposed between the second thermally conductive protrusion 1231b and the second current inflow terminal 211b. The first thermally conductive pad 131 is stacked between the first current inflow terminal 211a and the first thermally conductive protrusion 1231a, which can improve the heat transfer efficiency between the first current inflow terminal 211a and the first thermally conductive protrusion 1231a. The second thermally conductive pad 132 is stacked between the second current inflow terminal 211b and the second thermally conductive protrusion 1231b, which can improve the heat transfer efficiency between the second current inflow terminal 211b and the second thermally conductive protrusion 1231b.
[0102] Preferably, the materials of the first thermal pad 131 and the second thermal pad 132 both include thermally conductive silicone.
[0103] refer to Figure 8The base shell 11 has a first placement groove 1121 and a first heat-conducting groove 1122 sequentially arranged along the depth direction of the accommodating space 11 at the position corresponding to the first current inflow end 211a. The first heat-conducting pad 131 is placed in the first placement groove 1121, and the first heat-conducting boss 1231a extends into the first heat-conducting groove 1122. The base shell 11 has a second placement groove 1131 and a second heat-conducting groove 1132 sequentially arranged along the depth direction of the accommodating space 110 at the position corresponding to the second current inflow end 211b. The second heat-conducting pad 132 is placed in the second placement groove 1131, and the second heat-conducting boss extends into the second heat-conducting groove 1132.
[0104] The base shell 11 has a first thermally conductive opening corresponding to the first current inflow end 211a, connecting the first placement groove 1121 and the first thermally conductive groove 1122. The first thermally conductive boss 1131a passes through the first thermally conductive opening and abuts against the first thermally conductive pad 131. The base shell 11 has a second thermally conductive opening corresponding to the second current inflow end 211b, connecting the second placement groove 1131 and the second thermally conductive groove 1132. The second thermally conductive boss 1231b passes through the second thermally conductive opening and abuts against the second thermally conductive pad 132.
[0105] A first annular gap exists between the outer wall of the first heat-conducting protrusion 1231a and the inner wall of the first heat-conducting groove 1122, and a second annular gap exists between the outer wall of the second heat-conducting protrusion 1231b and the inner wall of the second heat-conducting groove 1132. By providing the first annular gap, the first heat-conducting protrusion 1231a can be easily installed into the first heat-conducting groove 1122, and the contact area with air can be increased, thus improving heat dissipation. Similarly, by providing the second annular gap, the second heat-conducting protrusion 1231b can be easily installed into the second heat-conducting groove 1132, and the contact area with air can be increased, thus improving heat dissipation.
[0106] refer to Figure 9 Furthermore, the first thermally conductive protrusion 1231a has a first heat dissipation groove 1230a with an opening away from the conductive sheet module 20, and the second thermally conductive protrusion 1231b has a second heat dissipation groove 1230b with an opening away from the conductive sheet module 20. The first heat dissipation groove 1230a increases the contact area between the first thermally conductive protrusion 1231a and the external air or the thermally conductive medium of the application device, thereby improving the heat dissipation effect. Similarly, the second heat dissipation groove 1230b increases the contact area between the second thermally conductive protrusion 1231b and the external air or the thermally conductive medium of the application device, thereby improving the heat dissipation effect.
[0107] Preferably, the material of the outer casing 12 includes at least one of aluminum, silver, copper, gold, and tungsten, so that the outer casing 12 not only has good thermal conductivity but also good electrical conductivity, making it easy to ground.
[0108] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.
Claims
1. A conductive sheet module for a filter, characterized in that, include: Base shell; An insulating frame, wherein the insulating frame has a first receiving groove and a second receiving groove stacked on both sides; A first conductive sheet is mounted in the first receiving groove; The second conductive sheet is mounted in the second receiving groove; A fixed pressure plate is provided, which has a first pressing end and a fixed end. The fixed end is installed on the base shell, and there is a compression space between the first pressing end and the base shell. The stacked insulating frame, the first conductive sheet, and the second conductive sheet are all installed in the compression space.
2. The conductive sheet module of the filter according to claim 1, characterized in that, The conductive sheet module of the filter further includes a clamp; The insulating frame has two oppositely arranged locking blocks on both sides, and the two ends of the clamp are respectively locked to the two locking blocks. The second conductive sheet is fixed between the clamp and the insulating frame.
3. The conductive sheet module of the filter according to claim 2, characterized in that, The filter conductive sheet module further includes a first electrode sheet and a second electrode sheet. The first conductive sheet has a first mating position at a preset position on the side away from the second conductive sheet, and the second conductive sheet has a second mating position at a preset position on the side away from the first conductive sheet. One end of the first electrode sheet is disposed at the first bonding position and located between the first conductive sheet and the fixing plate, and the other end extends to the outside of the first conductive sheet in a direction away from the fixing plate; one end of the second electrode sheet is stacked at the second bonding position, and the other end extends to the outside of the second conductive sheet in a direction away from the fixing plate.
4. The conductive sheet module of the filter according to claim 3, characterized in that, The first receiving groove has a first notch corresponding to the position of the first electrode sheet, and the end of the first electrode sheet away from the fixing plate extends out of the first notch; The second receiving groove has a second notch corresponding to the position of the second electrode sheet, and the end of the second electrode sheet away from the second conductive sheet extends out of the second notch.
5. The conductive sheet module of the filter according to claim 4, characterized in that, The portion of the clamp corresponding to the second conductive sheet includes a first clamp rib and a second clamp rib, with a clamp channel between the first clamp rib and the second clamp rib, and the second electrode sheet is located within the clamp channel.
6. The conductive sheet module of the filter according to claim 5, characterized in that, The first mating position has a first limiting hole, the first electrode sheet has a first through hole, and the fixing plate has a first fixing protrusion, which extends through the first through hole into the first limiting hole. The second mating position has a second limiting hole, the second electrode sheet has a second through hole, and the base shell has a second fixing protrusion, which extends through the second through hole into the second limiting hole.
7. The conductive sheet module of the filter according to claim 6, characterized in that, The conductive sheet module of the filter further includes a circuit board, which is disposed above the base shell and electrically connected to the first electrode sheet and the second electrode sheet; The filter conductive sheet module further includes a housing disposed outside the base shell, and the circuit board is detachably mounted on the housing.
8. The conductive sheet module of the filter according to claim 7, characterized in that, The fixing plate also has a second pressing end extending from the fixing end to the side away from the first pressing end, and the second pressing end abuts against the outer shell.
9. The conductive sheet module of the filter according to claim 1, characterized in that, The insulating frame includes a first insulating frame and a second insulating frame. The first insulating frame has a first snap-fit end, and the second insulating frame has a second snap-fit end. The first snap-fit end has a first snap tongue and a first snap groove, and the second snap-fit end has a second snap tongue and a second snap groove. The first snap tongue is installed in the second snap groove, and the second snap tongue is installed in the first snap groove. The first snap tongue and the second snap tongue are stacked.
10. A filter, characterized in that, The conductive sheet module comprising the filter according to any one of claims 1 to 9.