Split type filtering assembly
By designing split filter components, including removable nanocrystalline magnetic core module and filter module, combined with the three-stage filtering function of stacked design, the problem of limited use of fixed design of existing filter components is solved, and the components are detachable and flexible.
Patent Information
- Application Number
- CN202422283401.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-09-19
AI Technical Summary
Most existing filter components are fixedly designed and cannot be disassembled, added or reduced, resulting in limited use.
A split filtering component is designed, including a detachable nanocrystalline magnetic core module, a pre-stage filtering module and a post-stage filtering module. Through the stacking design of the copper row assembly and the shell, the function of three-stage filtering can be realized, and the configuration can be increased or reduced according to requirements.
It realizes the detachability and flexibility of filter components, and can select and assemble some or all modules according to different application scenarios, solving the problem of limited use of fixed design of existing filter components.
Smart Images
Figure CN222940790U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of filter structures, in particular to a split filter component. Background Art
[0002] The purpose of filtering is to filter or suppress unwanted signals (usually noise or interference) while allowing useful signals to pass through electronic devices or systems. They are very important in electronic circuits and are used to improve the quality of signals and the stability of systems. Power electronic devices in vehicles, such as motor controllers, battery management systems, communication systems, etc., will generate or be affected by electromagnetic interference, so filtering functions need to be set to reduce signal interference. However, most of the existing filter components select multi-stage filtering according to the application scenario. Each filter component is fixed in design and cannot be disassembled, nor can it be increased or reduced according to demand, which limits its use. Utility Model Content
[0003] In order to overcome the above technical defects, the purpose of the utility model is to provide a split filter assembly to solve the problem that most existing filter assemblies have fixed designs and limited uses.
[0004] The utility model discloses a split type filter component.
[0005] It includes a lower shell, an upper shell and a copper busbar assembly;
[0006] A ferrite core is integrated in the lower shell, and a first capacitor is integrated in the upper shell;
[0007] The lower housing, the copper busbar assembly, and the upper housing are connected in sequence along the Z direction;
[0008] The copper busbar assembly extends out of the upper housing and the lower housing along the X / Y direction;
[0009] Also includes:
[0010] A nanocrystalline magnetic core module is detachably mounted on the copper busbar assembly;
[0011] A front-stage filter module, detachably connected to a side of the lower housing away from the upper housing;
[0012] The post-stage filter module can be detachably connected to the copper busbar assembly.
[0013] Preferably, the nanocrystalline magnetic core module is arranged in parallel with the upper shell along the X / Y direction.
[0014] Preferably, the post-stage filter module is located on a side of the nanocrystalline magnetic core module away from the upper shell.
[0015] Preferably, the pre-stage filtering module and the post-stage filtering module respectively include a card board and a second capacitor arranged on the card board.
[0016] Preferably, the nanocrystalline magnetic core module includes a nanocrystalline magnetic core and a protective housing wrapping the nanocrystalline magnetic core, and an installation hole is provided at the end of the protective housing.
[0017] Preferably, it further includes a plurality of copper sheets, and the nanocrystalline magnetic core module, the pre-stage filtering module and the post-stage filtering module are respectively electrically connected to the copper bus assembly through the copper sheets.
[0018] Preferably, the lower housing, the copper bus assembly, the upper housing, the nanocrystalline magnetic core module, the pre-stage filtering module and the post-stage filtering module are respectively detachably connected by screws.
[0019] Preferably, each copper bus in the copper bus assembly is formed by multi-segment welding.
[0020] After adopting the above technical solution, compared with the prior art, it has the following beneficial effects:
[0021] For the filtering component of the present application, the upper housing, the lower housing and the copper bus assembly form a three-stage filtering with a laminated design, and the nanocrystalline magnetic core module, the pre-stage filtering module and the post-stage filtering module are detachably connected. The realization of multiple filtering functions is encapsulated into different components or modules, and some or all of them are selected and assembled according to the scenario application, realizing the detachability of each stage of filtering components, and solving the problem that most of the existing filtering components are fixedly designed and have limited use. Description of the Drawings
[0022] Figure 1 It is a schematic structural diagram of an embodiment of a split-type filtering component described in the present utility model;
[0023] Figure 2 It is a schematic structural diagram showing the pre-stage filtering module in a split-type filtering component described in the present utility model;
[0024] Reference Signs:
[0025] 1 - Lower housing; 2 - Upper housing; 21 - First capacitor; 3 - Copper bus assembly; 4 - Nanocrystalline magnetic core module; 5 - Pre-stage filtering module; 51 - Pre-stage card board; 52 - Pre-stage second capacitor; 6 - Post-stage filtering module; 61 - Post-stage card board; 62 - Post-stage first capacitor; 7 - Copper sheet. Detailed Embodiments
[0026] The advantages of the present utility model are further elaborated below in conjunction with the accompanying drawings and specific embodiments.
[0027] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0028] The terms used in the present disclosure are for the purpose of describing particular embodiments only and are not intended to limit the present disclosure. The singular forms "a", "the", and "said" used in the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
[0029] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the present utility model.
[0030] In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, they can be mechanical connections or electrical connections, or the communication inside two elements. They can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.
[0031] In the subsequent description, the suffixes such as "module", "component", or "unit" used to represent elements are only for the convenience of describing the present utility model, and they have no specific meaning in themselves. Therefore, "module" and "component" can be used interchangeably.
[0032] Embodiment: This embodiment discloses a split-type filtering component, which is formed by assembling each component separately, and is composed of a copper bar component 3, a card board integrated with filtering capacitors, a ferrite core, a nanocrystalline core, etc. It consists of a total of five-stage filtering of C-L-C-L-C. Each stage of the filtering component is detachable, with strong flexibility, and can also be increased or decreased according to the actual application scenario to adapt to different application scenarios.
[0033] Refer to Figure 1 and Figure 2The filter assembly includes a lower shell 1, an upper shell 2 and a copper busbar assembly 3; specifically, a ferrite core is integrated in the lower shell 1, and a first capacitor 21 is integrated in the upper shell 2. The copper busbar assembly 3 may include multiple copper buses to achieve electrical connection of each capacitor or core. The first capacitor 21 is a safety capacitor, that is, an X / Y capacitor. Multiple X capacitors (jump capacitors) can be integrated in the upper shell 2. X capacitors (jump capacitors) are usually connected between the live wire (L) and the neutral wire (N) of the power supply to reduce differential mode noise. Y capacitors (ground capacitors): Y capacitors are capacitors connected between the power supply line (live wire or neutral wire) and the ground wire (GND) to reduce common mode noise. The number and type of the first capacitors 21 in the upper shell 2 can be configured according to actual application scenarios.
[0034] Specifically, the lower shell 1, the copper bar assembly 3, and the upper shell 2 are connected in sequence along the Z direction, and the copper bar assembly 3 extends out of the upper shell 2 and the lower shell 1 along the X / Y direction. The lower shell 1, the copper bar assembly 3, and the upper shell 2 are detachably connected by screws, and the electrical connection is achieved through the copper bar assembly 3. Specifically, during assembly, the lower shell 1 with an integrated ferrite core can be obtained, the copper bar is assembled, the copper bar is pressed with insulating paper, and then the upper shell 2 is assembled and fixed by screws. The CLC three-stage filter with a laminated design is formed by the capacitor in the upper shell 2 and the magnetic core in the lower shell 1, which reduces the overall (especially the X / Y direction) space occupancy, and its volume occupancy is reduced by at least 10% relative to the existing dispersed or arranged layout.
[0035] The above can be regarded as the basic components forming the filtering assembly provided in this embodiment, which can meet the usage requirements in most application scenarios and occupy a small space. The connection between the upper shell 2 and the lower shell 1 and the copper busbar assembly 3 can also be optionally detachable, and the integrated components (first capacitor 21 / ferrite core) in the upper shell 2 and the lower shell 1 can also be adjusted to facilitate use and replacement.
[0036] Based on the above basic components, the filter assembly also includes: a nanocrystalline core module 4, which is detachably mounted on the copper bar assembly 3; a pre-stage filter module 5, which is detachably connected to the side of the lower shell 1 away from the upper shell 2; and a post-stage filter module 6, which is detachably connected to the copper bar assembly 3. The detachable nanocrystalline core module 4, the pre-stage filter module 5 and the post-stage filter module 6 further increase the CLC three-stage filter with a stacked design to a CLCLC five-stage filter. Furthermore, the pre-stage filter module 5 is connected to the lower shell 1 and can be arranged along the Z direction of the upper shell 2 or the lower shell 1. The nanocrystalline core module 4 and the post-stage filter module 6 are connected to the copper bar assembly 3, that is, arranged at the portion of the copper bar assembly 3 extending from the upper shell 2 / lower shell 1, and arranged along the X / Y direction of the upper shell 2 or the lower shell 1, so that each module is more closely connected to the upper shell 2 / lower shell 1, so as to reduce the space occupied in the filter assembly while meeting the filtering requirements.
[0037] It is understandable that the above-mentioned nanocrystalline magnetic core module 4, pre-filter module 5, and post-filter module 6 can all be detachably connected, and more than one group can be set, and some or all of them can be selectively connected or detached according to different application requirements to achieve the conversion from five-stage filtering to four-stage or three-stage filtering, or even more. It should be noted that in this embodiment, the detachable connection of the lower housing 1, copper busbar assembly 3, upper housing 2, nanocrystalline magnetic core module 4, pre-filter module 5, and post-filter module 6 is realized by screw connection, mainly considering space occupation. In some implementation scenarios, other existing detachable connection structures can also be selected, such as using a snap connection in the housing design or connecting other auxiliary structures, etc.
[0038] In this embodiment, as described above, the copper busbar assembly 3 can include one or more copper busbars, such as DC copper busbars, AC copper busbars, etc. Each copper busbar in the copper busbar assembly 3 can be formed by multi-segment welding, rather than the existing general one-piece injection molding, so as to be suitable for connection with other devices in different scenarios. The bending or straight segments of each copper busbar can also be configured according to the specific shapes of the upper housing 2 and the lower housing 1, further improving the structural compactness of the filter assembly and reducing space occupation. Optionally, the output end of the copper busbar is designed as a straight-out structure and can be directly assembled for different scenarios.
[0039] In the above embodiment, the pre-filter module 5 and the post-filter module 6 respectively include a card board and a second capacitor arranged on the card board. Specifically, the sizes of the card boards of the pre-filter module 5 and the post-filter module 6, the number and specifications of the second capacitors, etc. can all be selected and set according to the actual application scenario, and they can be the same or different. For example, for distinction, the pre-filter module 5 can include a pre-stage card board 51 and a pre-stage second capacitor 52 arranged on the pre-stage card board 51, and the post-filter module 6 includes a post-stage card board 61 and a post-stage second capacitor 62 arranged on the post-stage card board 61. It should also be noted that the card board can be a PCBA, that is, a printed circuit board. Specifically, the card board of the pre-filter module 5 can be connected to the lower housing 1 assembly by screws.
[0040] In the above embodiment, the nanocrystalline magnetic core module 4 includes a nanocrystalline magnetic core and a protective housing that wraps the nanocrystalline magnetic core. The nanocrystalline magnetic core can be adapted to most existing power modules to be suitable for different scenarios; the protective housing can be fixed to the copper busbar assembly 3, thereby restricting the position of the nanocrystalline magnetic core and improving the stability of electrical connection during use. An installation hole (not marked) is provided at the end of the protective housing, and the setting of the installation hole can facilitate the fixation with the overall housing or other connection devices in the application scenario. The nanocrystalline magnetic core is located in the protective housing (which can be a plastic housing), and other fixing points can be added or reduced on it, and it can be detachably adapted to different filtering scenarios as a single part.
[0041] Furthermore, the filter assembly also includes a plurality of copper sheets 7 ( Figure 2 Only the copper sheet 7 connected to the post-stage filter module is shown in the figure. The nanocrystalline magnetic core module 4, the front-stage filter module 5 and the post-stage filter module 6 are electrically connected to the copper busbar assembly 3 through the copper sheet 7 respectively. The electrical connection with the copper busbar assembly 3 is achieved through the copper sheet 7 (front-stage copper sheet 7 / post-stage copper sheet 7). The structure of the copper sheet 7 is similar, it can be formed in batches, and it is arranged at different positions on the corresponding boards of the front-stage filter module 5 and the post-stage filter module 6 (can be welded, fixed with glue, etc.), and can also replace some pins to achieve connection at different positions, with strong versatility.
[0042] Based on the upper housing 2, lower housing 1 and copper bar assembly 3 after the above-mentioned assembly, the pre-stage filter module 5 is assembled and fixed by screws, and then the nanocrystalline magnetic core module 4 is assembled, and then the post-stage filter module 6 is assembled, and electrical connection is achieved by copper sheet 7. As an example, the post-stage filter module 6 is connected by welding some post-stage second capacitors 62 on the post-stage card board 61, and the post-stage card board 61 welds copper sheet 7 and overlaps on the copper bar assembly 3. As an optional, the post-stage card board 61 can also be fixed on the post-stage second capacitor 62 by dispensing glue. In addition to the above, other (first capacitor 21, ferrite core or even other connecting parts) and the copper bar assembly 3 are electrically connected and can also adopt copper sheet 7 to save copper bar pins and further reduce the overall space of the filter assembly.
[0043] Based on the above, in a preferred embodiment, the nanocrystalline core module 4 is arranged in parallel with the upper shell 2 along the X / Y direction, and the nanocrystalline core module 4 is sleeved on the copper busbar assembly 3, specifically on at least one copper busbar. If the copper busbar is extended along the surface of the upper shell 2 and then bent, the nanocrystalline core module 4 can be arranged in parallel with the upper shell 2. Furthermore, the post-stage filter module 6 is arranged on the side of the nanocrystalline core module 4 away from the upper shell 2. More specifically, the post-stage filter module 6 can limit the nanocrystalline core module 4 from moving out of the copper busbar, and a filter capacitor connected to the copper busbar assembly 3 through a post-stage card board 61 and arranged on the card board can also be arranged to extend toward the direction of the lower shell 1, so that the space of the entire filter assembly is reasonable.
[0044] Thus, the upper housing 2, the lower housing 1 and the copper busbar assembly 3 of the filtering component provided in this embodiment form a three-stage filtering with a laminated design, and further detachably connect the nanocrystalline magnetic core module 4, the pre-stage filtering module 5, and the post-stage filtering module 6. The realization of multiple filtering functions is packaged into different components or modules, and some or all of them are selected and assembled according to the scenario application to achieve the transformation from five-stage filtering to four-stage or three-stage filtering. The detachable connection of each stage of the filtering component is realized by screws (or other auxiliary structures), solving the problem that most of the existing filtering components are fixedly designed and have limited use. Further, the pre-stage filtering module 5 and the post-stage filtering module can both achieve electrical connection with the copper busbar assembly 3 through the copper sheets 7 arranged on them, with strong reusability and strong connection versatility. The copper busbar assembly 3 is a copper busbar formed by welding, not integrally formed, to be suitable for different scenarios, making the overall space occupied by the filtering component smaller.
[0045] It should be noted that the detachable nature of the filtering component in this application is reflected in the detachable nature of each stage of the filtering function, and selective assembly can be achieved. The detachable connection of each module, the upper housing 2, the lower housing 1, the nanocrystalline magnetic core module 4, the pre-stage filtering module 5, and the post-stage filtering module 6 can be realized through the above-mentioned screws for adding or reducing filtering in different scenarios. It can also be realized through other connection structures (such as the clamping of the housing, auxiliary connection structures such as rods and grooves) or spot gluing after assembly. Additionally, the filtering component provided in this embodiment can be applied to vehicle control scenarios including but not limited to motor controllers, batteries, communication systems, etc., and can also be used to connect other devices / components, such as heat dissipation and drive, to meet different usage requirements.
[0046] It should be noted that the embodiments of the present invention have good implementability and are not any form of limitation to the present invention. Any person skilled in the art may use the disclosed technical content to modify or transform it into equivalent effective embodiments. However, as long as it does not depart from the technical content of the technical solution of the present invention, any modification, equivalent change, or modification made to the above embodiments based on the technical essence of the present invention still falls within the scope of the technical solution of the present invention.
Claims
1. A split filter assembly, characterized in that: It includes a lower shell, an upper shell and a copper busbar assembly; A ferrite core is integrated in the lower shell, and a first capacitor is integrated in the upper shell; The lower housing, the copper busbar assembly, and the upper housing are connected in sequence along the Z direction; The copper busbar assembly extends out of the upper housing and the lower housing along the X / Y direction; Also includes: A nanocrystalline magnetic core module is detachably mounted on the copper busbar assembly; A front-stage filter module, detachably connected to a side of the lower housing away from the upper housing; The post-stage filter module can be detachably connected to the copper busbar assembly.
2. The split filter assembly according to claim 1, characterized in that: The nanocrystalline magnetic core module is arranged in parallel with the upper shell along the X / Y direction.
3. The split filter assembly according to claim 2, characterized in that: The post-stage filter module is located on a side of the nanocrystalline magnetic core module away from the upper shell.
4. The split filter assembly according to claim 1, characterized in that: The pre-stage filter module and the post-stage filter module respectively include a card board and a second capacitor arranged on the card board.
5. The split filter assembly according to claim 1, characterized in that: The nanocrystalline magnetic core module comprises a nanocrystalline magnetic core and a protective shell wrapping the nanocrystalline magnetic core, and a mounting hole is provided at the end of the protective shell.
6. The split filter assembly according to claim 1, characterized in that: It also includes a plurality of copper sheets, and the nanocrystalline magnetic core module, the front-stage filter module and the rear-stage filter module are electrically connected to the copper busbar assembly through the copper sheets respectively.
7. The split filter assembly according to claim 1, characterized in that: The lower housing, the copper busbar assembly, the upper housing, the nanocrystalline magnetic core module, the front-stage filter module and the rear-stage filter module are detachably connected by screws.
8. The split filter assembly according to claim 1, characterized in that: Each copper bar in the copper bar assembly is formed by welding multiple sections.