Filter assembly, production method and filter thereof

Abstract

The invention provides a filter assembly, a production method and a filter thereof, and relates to the technical field of filters, the filter assembly comprises a shell, a copper bar assembly and an anchoring part, the copper bar assembly comprises a first copper bar and a second copper bar, the first copper bar and the second copper bar are arranged in parallel, and the anchoring part comprises an anchoring body and a fixing body. The anchoring body is arranged between the first copper bar and the second copper bar and has a preset thickness; thus, the distance between the first copper bar and the second copper bar is anchored to the preset distance through the anchoring body with the preset thickness, so that the short circuit phenomenon caused by electric breakdown is avoided on the basis of improving the filtering performance, the distance between the first copper bar and the second copper bar is limited through the thickness of the anchoring body, the precision of the preset distance is improved, and the filtering performance is improved. The assembling precision of the filter assembly is improved, so that the short circuit phenomenon caused by electric breakdown is avoided on the basis of improving the filtering performance, and the assembling precision of the filter assembly is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of filters, and in particular to a filter component, a production method and a filter thereof. Background Art

[0002] A filter is a device or circuit that processes signals. For example, a power filter is a device used with a power supply or similar power supply system. Its main function is to filter out interference signals such as high-frequency noise and harmonics in the power line to ensure that the equipment can operate stably in a complex power supply environment. The design goal of the power filter is to reduce the impact of power supply noise on the equipment and prevent the noise generated by the equipment from being transmitted to the power grid through the power line. Power filters are widely used in the automotive field.

[0003] The existing filter mainly includes a shell, a copper busbar assembly, a capacitor, an inductor and a resistor. The copper busbar assembly is usually housed in the shell to form a filter assembly. In the filter assembly, the copper busbars are designed to have a parallel stacked structure and the parallel copper busbars are isolated by an isolation plate so that the magnetic fields can cancel each other out and the stray inductance can be reduced, thereby improving the filtering performance. However, the existing filter does not limit the spacing between the copper busbars, so that when the spacing between the two copper busbars is too small, electrical breakdown will occur, which can easily lead to a short circuit. When the spacing between the copper busbars is too large, the electromagnetic coupling between the copper busbars will be reduced, thereby affecting the performance of the filter. Summary of the invention

[0004] The present disclosure provides a filter assembly, a production method and a filter thereof, so as to at least solve the above-mentioned problems in the prior art.

[0005] To achieve the above object, the present disclosure provides the following technical solution: a filter component, comprising: case; A copper bar assembly, comprising a first copper bar and a second copper bar, wherein the first copper bar and the second copper bar are arranged in parallel with each other in the housing, and both ends of the first copper bar and the second copper bar extend out of the housing; An anchoring member comprises an anchoring body and a fixing body, wherein the anchoring body is arranged between the first copper bar and the second copper bar and connected to the fixing body, the fixing body is fixedly connected to the shell, and the anchoring body has a predetermined thickness and is used to anchor the spacing between the first copper bar and the second copper bar to a predetermined distance.

[0006] In one possible implementation, the predetermined thickness of the anchor is the same as the predetermined distance between the first copper bar and the second copper bar, and the predetermined distance is 2.3 mm-2.7 mm.

[0007] In one possible implementation manner, a through hole is provided on the shell, the through hole communicates with the inside and outside of the shell, and the fixing body is embedded in the through hole and forms an integral structure with the shell.

[0008] In one possible implementation manner, the lateral surface of the fixing body is in contact with the hole wall of the through hole, and the lateral surface of the fixing body and the hole wall of the through hole are both configured as a stepped structure.

[0009] In one possible implementation manner, a first accommodating cavity and a second accommodating cavity are further configured in the shell, the first copper bar is accommodated in the first accommodating cavity, and the cross-sectional shape and cross-sectional area of ​​the first copper bar and the first accommodating cavity are exactly the same, the second copper bar is accommodated in the second accommodating cavity, and the cross-sectional shape and cross-sectional area of ​​the second copper bar and the second accommodating cavity are exactly the same.

[0010] In one embodiment, the housing comprises: A main body, provided with the first accommodating cavity and the second accommodating cavity; A magnetic ring mounting seat is connected to the outside of the main body and is used to mount the external magnetic ring. The main body and the magnetic ring mounting seat are an integrated structure. A fixing seat is connected to the outside of the main body and is used to install the shell to an external component. The main body and the fixing seat are an integrated structure.

[0011] The present disclosure also provides the following technical solution: The production method of the filter assembly comprises: forming the anchor member by injection molding of a first mold; Positioning the formed anchor into a second mold; Positioning a copper bar assembly, wherein the copper bar assembly includes a first copper bar and a second copper bar, and arranging the first copper bar and the second copper bar in parallel and positioning them in the second mold, and positioning the anchor body of the anchor member between the first copper bar and the second copper bar, so that the first copper bar and the second copper bar are kept at a predetermined distance; Plastic melt is injected into the second mold to form a shell, and the molded shell, the anchor and the copper bar assembly form an integrated structure.

[0012] In one embodiment, a positioning groove is formed in the anchor by a first mold, and a positioning protrusion matched with the positioning groove is provided in the second mold, and the anchor is positioned in the second mold by the positioning groove and the positioning protrusion.

[0013] In one embodiment, both ends of the first copper bar and the second copper bar are provided with positioning through holes, and the second mold is provided with positioning pins, which are inserted into the positioning through holes to position the first copper bar and the second copper bar.

[0014] The present disclosure also provides the following technical solution: a filter, the filter comprising the above-mentioned filter component.

[0015] In the above-mentioned filter assembly, an anchor body with a predetermined thickness is first fixed between the first copper bar and the second copper bar by an anchor body, so that the first copper bar and the second copper bar are arranged in parallel at a predetermined distance, so as to quickly limit the distance between the first copper bar and the second copper bar to the predetermined distance, and the spacing between the first copper bar and the second copper bar is constrained by limiting the thickness of the anchor body, so that the accuracy of the predetermined distance between the first copper bar and the second copper bar is higher; in this way, the spacing between the first copper bar and the second copper bar is anchored to the predetermined distance by an anchor body with a predetermined thickness, so as to avoid the short circuit caused by electrical breakdown on the basis of improving the filtering performance, and the spacing between the first copper bar and the second copper bar is limited by the thickness of the anchor body, thereby improving the accuracy of the predetermined distance and improving the assembly accuracy of the filter assembly, thereby achieving the avoidance of the short circuit caused by electrical breakdown on the basis of improving the filtering performance and improving the assembly accuracy of the filter assembly.

[0016] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which: In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0018] Figure 1 A schematic diagram of the structure of the filter assembly when the column assembly is adjusted to a tilted state in an embodiment of the present disclosure is shown; Figure 2 Shows Figure 1 Schematic diagram of the decomposed structure of the filter component; Figure 3 Shows Figure 1 A schematic diagram of the front view of the middle copper busbar assembly and anchoring pieces; Figure 4 Shows Figure 2 A schematic diagram of the structure of the middle shell; Figure 5 Shows Figure 2 Schematic diagram of the structure of the middle anchor; Figure 6 A schematic flow chart of a method for producing a filter assembly according to another embodiment of the present disclosure is shown.

[0019] Description of the numbers in the figure: In the figure: 11, shell; 111, through hole; 112, first accommodating chamber; 113, second accommodating chamber; 114, partition; 115, notch; 116, main body; 117, magnetic ring mounting seat; 118, fixing seat; 12, copper busbar assembly; 121, first copper busbar; 122, second copper busbar; 123, positioning through hole; 13, anchoring piece; 131, anchoring body; 132, fixing body; 1321, fixing plate; 1322, first bending plate; 1323, second bending plate; 133, positioning groove. DETAILED DESCRIPTION

[0020] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0021] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of this disclosure can be achieved, and this document is not limited here.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] Example 1: This embodiment provides a filter component.

[0024] Please also read Figure 1-2The present embodiment provides a filter assembly, which includes a shell 11, a copper bar assembly 12 and an anchor 13. The copper bar assembly 12 includes a first copper bar 121 and a second copper bar 122. The first copper bar 121 and the second copper bar 122 are arranged in parallel in the shell 11, and both ends of the first copper bar 121 and the second copper bar 122 extend out of the shell 11. The anchor 13 includes an anchor body 131 and a fixed body 132. The fixed body 132 and the anchor body 131 are an integrated structure. The anchor body 131 is arranged between the first copper bar 121 and the second copper bar 122 and is connected to the fixed body 132. The fixed body 132 is fixedly connected to the shell 11, and the anchor body 131 has a predetermined thickness and is used to anchor the spacing between the first copper bar 121 and the second copper bar 122 to a predetermined distance. The shell 11 and the anchor 13 are both made of insulating material.

[0025] In the above filter assembly, an anchor body 131 with a predetermined thickness is firstly arranged between the first copper bar 121 and the second copper bar 122, so that the first copper bar 121 and the second copper bar 122 are arranged in parallel at a predetermined distance, so as to quickly limit the distance between the first copper bar 121 and the second copper bar 122 to the predetermined distance, and the spacing between the first copper bar 121 and the second copper bar 122 is constrained by limiting the thickness of the anchor body 131, and the predetermined distance can be prevented from being slightly changed due to deformation during the production process, so that the first copper bar 121 and the second copper bar 122 after production are The accuracy of the predetermined distance between the rows 122 is higher; in this way, the spacing between the first copper row 121 and the second copper row 122 is anchored to a predetermined distance by an anchor body 131 of predetermined thickness, so as to avoid the short circuit caused by electrical breakdown on the basis of improving the filtering performance, and the spacing between the first copper row 121 and the second copper row 122 is limited by the thickness of the anchor body 131, thereby improving the accuracy of the predetermined distance and improving the assembly accuracy of the filter component, thereby achieving the improvement of the filtering performance on the basis of avoiding the short circuit caused by electrical breakdown and improving the assembly accuracy of the filter component.

[0026] See also Figure 3 In some embodiments, the predetermined thickness of the anchor 13 is the same as the predetermined distance between the first copper bar 121 and the second copper bar 122, and the predetermined distance is A, wherein the range of A is 2.3 mm-2.7 mm, and the predetermined distance can be 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm. Preferably, the predetermined distance is 2.5 mm.

[0027] When the predetermined distance is less than 2.3 mm, when a large current passes through the first copper bar 121 and the second copper bar 122, electric breakdown will occur between the first copper bar 121 and the second copper bar 122, causing a circuit short circuit. When the predetermined distance is greater than 2.7 mm, the electromagnetic coupling between the first copper bar 121 and the second copper bar 122 will be reduced, thereby affecting the performance of the filter. When the predetermined distance is 2.3 mm-2.7 mm, the filter component can avoid the short circuit caused by electric breakdown while improving the filtering performance.

[0028] Please also read Figure 4 and Figure 5 In some embodiments, a through hole 111 is provided on the shell 11 , and the through hole 111 communicates with the inside and outside of the shell 11 . The fixing body 132 is embedded in the through hole 111 and is an integrated structure with the shell 11 .

[0029] In this way, by embedding the fixing body 132 in the through hole 111 and designing it as an integrated structure with the shell 11, the fixing body 132 does not occupy the internal space of the shell 11, so as to reduce the volume of the shell 11, thereby reducing the overall volume of the filter, so as to more flexibly install the filter in the narrow space of the electric vehicle, thereby improving its scope of application. At the same time, by reducing the volume of the shell 11, the material amount of the shell 11 can be further reduced, so as to reduce the production cost of the filter assembly. By designing the fixing body 132 and the shell 11 as an integrated structure, the firmness between the fixing body 132 and the shell 11 can be improved.

[0030] In some embodiments, the side surface of the fixed body 132 is in contact with the hole wall of the through hole 111, and the side surface of the fixed body 132 and the hole wall of the through hole 111 are both configured as a stepped structure; in this way, by configuring the side surface of the fixed body 132 and the hole wall of the through hole 111 as a stepped structure, a larger contact area is provided between the fixed body 132 and the hole wall of the through hole 111, so that the fixed body 132 and the shell 11 are more firmly formed after being integrally molded by mold injection, thereby improving product quality.

[0031] Furthermore, the side surface of the fixing body 132 and the hole wall of the through hole 111 may also be in other shapes, for example, a wave-shaped structure or a tooth-shaped structure.

[0032] In this embodiment, the specific structure of the fixing body 132 is not limited. For example, the fixing body 132 is a plate-shaped structure; Figure 5Alternatively, the fixed body 132 includes a fixed plate 1321 and a first bent plate 1322, the first bent plate 1322 is connected to one end of the fixed plate 1321 and is parallel to the anchor body 131, wherein the first copper bus 121 is clamped and fixed between the first bent plate 1322 and the anchor body 131; or, the fixed body 132 also includes a second bent plate 1323, the second bent plate 1323 is connected to the other end of the fixed plate 1321 and is parallel to the anchor body 131, wherein the second copper bus 122 is clamped and fixed between the second bent plate 1323 and the anchor body 131.

[0033] Furthermore, the spacing between the first bending plate 1322 and the anchor body 131 is the same as the thickness of the first copper bar 121, and the spacing between the second bending plate 1323 and the anchor body 131 is the same as the thickness of the first copper bar 121, so as to avoid the first copper bar 121 and the second copper bar 122 moving away from each other when deforming during the production process, thereby preventing the predetermined distance from changing, thereby ensuring the accuracy of the predetermined distance between the first copper bar 121 and the second copper bar 122 after production.

[0034] See also Figure 4 In some embodiments, the shell 11 is further configured with a first accommodating chamber 112 and a second accommodating chamber 113, and the first accommodating chamber 112 and the second accommodating chamber 113 are separated by a partition 114, and the thickness of the partition 114 is the same as the thickness of the anchor body 131, and a notch 115 is further provided on the partition 114, and the shape and size of the notch 115 are exactly the same as the shape and size of the anchor body 131, the anchor body 131 is embedded in the notch 115 and is an integrated structure with the partition 114, the first copper bus 121 is accommodated in the first accommodating chamber 112, and the cross-sectional shape and cross-sectional area of ​​the first copper bus 121 and the first accommodating chamber 112 are exactly the same, the second copper bus 122 is accommodated in the second accommodating chamber 113, and the cross-sectional shape and cross-sectional area of ​​the second copper bus 122 and the second accommodating chamber 113 are exactly the same.

[0035] In this way, by making the cross-sectional shape and area of ​​the first copper bar 121 and the first accommodating cavity 112 completely identical, and making the cross-sectional shape and area of ​​the second copper bar 122 and the second accommodating cavity 113 completely identical, the overall volume of the shell 11 can be reduced, so that the filter can be installed in a small space of an electric vehicle, thereby increasing its scope of application. At the same time, by reducing the volume of the shell 11, the amount of material used in the shell 11 can be further reduced, so as to reduce the production cost of the filter assembly.

[0036] Furthermore, by designing the thickness of the partition 114 to be consistent with the thickness of the anchor body 131, and providing a notch 115 on the partition 114 with the same size and shape as the anchor body 131, the first copper bar 121 and the second copper bar 122 can be completely isolated, so that the first accommodating cavity 112 and the second accommodating cavity 113 form independent and sealed chambers respectively, thereby better avoiding electrical breakdown between the first copper bar 121 and the second copper bar 122, thereby better ensuring the filtering effect. At the same time, by integrating the structure of the partition 114 and the anchor body 131, the connection between the anchor body 131 and the partition 114 is more firmly established.

[0037] Specifically, the anchor 13 and the shell 11 are made of the same material, and the anchor 13 and the shell 11 can be better fused during the injection molding process, thereby improving the firmness between the anchor 13 and the shell 11 and making the anchor 131 less susceptible to electrical breakdown.

[0038] See also Figure 5 In some embodiments, the shell 11 includes a main body 116, a magnetic ring mounting seat 117 and a fixing seat 118. The main body 116 is provided with a first accommodating cavity 112 and a second accommodating cavity 113. The magnetic ring mounting seat 117 is connected to the outside of the main body 116 and is used to install an external magnetic ring (not shown). The magnetic ring usually adopts a nanocrystalline magnetic ring with better filtering effect. The main body 116 and the magnetic ring mounting seat 117 are an integrated structure. The fixing seat 118 is connected to the outside of the main body 116 and is used to install the shell 11 to an external component (for example, an electric car). The main body 116 and the fixing seat 118 are an integrated structure. In this way, the main body 116, the magnetic ring mounting seat 117 and the fixing seat 118 are integrally formed by mold injection molding, which omits the assembly steps, is conducive to improving the assembly efficiency, and improves the overall firmness of the shell 11.

[0039] In some embodiments, the number of anchors 13 is the same as the number of notches 115 and the number of through holes 111 and are all multiple, multiple anchors 13 are arranged at intervals, multiple notches 115 are arranged at intervals on the partition 114, and multiple through holes 111 are arranged at intervals on the shell 11, and each anchor 13 corresponds to a corresponding notch 115 and a corresponding through hole 111.

[0040] See also Figure 6 , Example 2, this embodiment also discloses a method for producing a filter assembly.

[0041] The production method of the filter assembly includes: S1, forming the anchor 13 by injection molding of a first mold; S2, positioning the formed anchor 13 into the second mold; S3, positioning the copper bar assembly 12, the copper bar assembly 12 comprising a first copper bar 121 and a second copper bar 122, the first copper bar 121 and the second copper bar 122 are arranged in parallel and positioned in the second mold, and the anchor body 131 of the anchor member 13 is located between the first copper bar 121 and the second copper bar 122, so that the first copper bar 121 and the second copper bar 122 are kept at a predetermined distance, so as to ensure that the copper bar assembly 12 is not deformed during and after the injection molding process, thereby ensuring the yield rate of the product; S4, injecting plastic melt into the second mold to mold the shell 11, and the molded shell 11 forms an integrated structure with the anchor 13 and the copper busbar assembly 12.

[0042] In S2 , the plastic melt is injected into the mold cavity of the first mold, and the plastic melt is cooled to form the anchor 13 . The first mold is the mold of the anchor 13 .

[0043] In S2, a positioning groove 133 is formed in the anchor 13 by a first mold, and a positioning protrusion matched with the positioning groove 133 is provided in a second mold. The anchor 13 is positioned in the second mold by the positioning groove 133 and the positioning protrusion. The second mold is a mold of the shell 11.

[0044] In S2, the number of the anchors 13 may be plural, for example, two or three.

[0045] In S3 , both ends of the first copper bar 121 and the second copper bar 122 are provided with positioning holes 123 , and positioning pins are provided in the second mold. The positioning pins are inserted into the positioning holes 123 to position the first copper bar 121 and the second copper bar 122 .

[0046] In S4 , the housing 11 and the anchor 13 are made of the same material, so that the housing 11 and the anchor 13 can be better combined with each other during the injection molding process, and the combination strength is higher.

[0047] In S4, the anchor 13 includes an anchor body 131 and a fixed body 132. The outer peripheral surface of the fixed body 132 is a stepped structure so as to increase the fusion area between the fixed body 132 and the shell 11, and the end corners of the fixed body 132 are chamfered to facilitate the plastic melt to flow to the end corners more easily during the injection molding process and better integrate with the shell 11, thereby further improving the bonding strength of the anchor 13 and the shell 11 after integral molding.

[0048] Example three: This embodiment also discloses a filter.

[0049] In some embodiments, the filter includes the above-mentioned filter component, and the filter is used to effectively filter out a frequency point of a specific frequency or frequencies other than the frequency point in the power line of the electric vehicle to obtain a power signal of a specific frequency.

[0050] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A filter component, characterized in that: include: case; A copper bar assembly, comprising a first copper bar and a second copper bar, wherein the first copper bar and the second copper bar are arranged in parallel with each other in the housing, and both ends of the first copper bar and the second copper bar extend out of the housing; An anchoring member comprises an anchoring body and a fixing body, wherein the anchoring body is arranged between the first copper bar and the second copper bar and connected to the fixing body, the fixing body is fixedly connected to the shell, and the anchoring body has a predetermined thickness and is used to anchor the spacing between the first copper bar and the second copper bar to a predetermined distance.

2. The filter assembly according to claim 1, characterized in that The predetermined thickness of the anchor is the same as the predetermined distance between the first copper bar and the second copper bar, and the predetermined distance is 2.3 mm-2.7 mm.

3. The filter assembly according to claim 1, characterized in that The shell is provided with a through hole, the through hole communicates with the inside and outside of the shell, the fixing body is embedded in the through hole and forms an integrated structure with the shell.

4. The filter assembly according to claim 3, characterized in that The side surface of the fixing body is in contact with the hole wall of the through hole, and the side surface of the fixing body and the hole wall of the through hole are both configured as a stepped structure.

5. The filter assembly according to claim 1, characterized in that The shell is further provided with a first accommodating cavity and a second accommodating cavity. The first copper bar is accommodated in the first accommodating cavity, and the cross-sectional shape and cross-sectional area of ​​the first copper bar and the first accommodating cavity are exactly the same. The second copper bar is accommodated in the second accommodating cavity, and the cross-sectional shape and cross-sectional area of ​​the second copper bar and the second accommodating cavity are exactly the same.

6. The filter assembly according to claim 5, characterized in that The housing comprises: A main body, provided with the first accommodating cavity and the second accommodating cavity; A magnetic ring mounting seat is connected to the outside of the main body and is used to mount the external magnetic ring. The main body and the magnetic ring mounting seat are an integrated structure. A fixing seat is connected to the outside of the main body and is used to install the shell to an external component. The main body and the fixing seat are an integrated structure.

7. A method for producing a filter component, characterized in that: The production method of the filter assembly comprises: forming the anchor member by injection molding of a first mold; Positioning the formed anchor into a second mold; Positioning a copper bar assembly, wherein the copper bar assembly includes a first copper bar and a second copper bar, and arranging the first copper bar and the second copper bar in parallel and positioning them in the second mold, and positioning the anchor body of the anchor member between the first copper bar and the second copper bar, so that the first copper bar and the second copper bar are kept at a predetermined distance; Plastic melt is injected into the second mold to form a shell, and the molded shell, the anchor and the copper bar assembly form an integrated structure.

8. The method for producing a filter component according to claim 7, characterized in that: A positioning groove is formed in the anchor piece by a first mold, and a positioning protrusion matched with the positioning groove is arranged in the second mold, and the anchor piece is positioned in the second mold by the positioning groove and the positioning protrusion.

9. The method for producing a filter component according to claim 7, characterized in that: Both ends of the first copper bar and the second copper bar are provided with positioning through holes, and the second mold is provided with positioning pins, which are inserted into the positioning through holes to position the first copper bar and the second copper bar.

10. A filter, characterized in that: The filter comprises the filter assembly according to any one of claims 1 to 6.

Images