EMC filtering assembly

Abstract

The utility model discloses an EMC filtering assembly, which comprises a base and two linear copper bars, the number of the linear copper bars is two, the two linear copper bars are arranged side by side at an interval, the base is provided with a positioning groove, and the two ends of each linear copper bar are provided with wiring terminals; a magnetic ring is clamped on the base; a Y capacitor is arranged on the base, and a grounding terminal is arranged on the base; an X capacitor is electrically connected between the two linear copper bars, and the Y capacitor, the X capacitor, the magnetic ring and the linear copper bars jointly form a filter circuit. The device has the beneficial effects that through reasonable structural design and a flexible connection mode, positioning and rapid installation of all parts are assisted, and the stability and the conductivity of the device are enhanced; the filter circuit improves the safety of an electrical system and prolongs the service life of equipment; the method is excellent in electrical performance, operation convenience and stability, and has wide application potential.

Description

Technical Field

[0001] The utility model relates to the field of automotive electronics, in particular to an EMC filter component. Background Art

[0002] Electromagnetic compatibility (EMC) refers to the ability of electronic equipment to function properly within its electromagnetic environment while not causing electromagnetic interference to other devices. EMC design and testing are crucial to ensuring device reliability, especially in consumer electronics, automotive electronics, and industrial equipment. Good EMC performance not only improves device stability but also enhances the user experience. Through sound EMC design, companies can effectively reduce failure rates, extend equipment life, and ultimately achieve higher market value and customer satisfaction.

[0003] In comparison, the Chinese utility model patent with publication number CN215266940U discloses a modular busbar EMC filtering structure, including a fixed seat and positive and negative copper busbars. The fixed seat is provided with a primary magnetic ring cavity, a primary filter board cavity, a secondary magnetic ring cavity and a secondary filter board cavity from left to right. A primary magnetic ring is installed in the primary magnetic ring cavity, a primary filter board is installed in the primary filter board cavity, a secondary magnetic ring is installed in the secondary magnetic ring cavity, and a secondary filter board is installed in the secondary filter board cavity. The primary magnetic ring, the primary filter board, the secondary magnetic ring and the secondary filter board are arranged in parallel. The positive and negative copper busbars consist of a bent portion and an input end and an output end respectively connected to the two ends of the bent portion. The bent portion bends downward, and the bent portion passes through the secondary magnetic ring installed in the secondary magnetic ring cavity. The input end is fixed on the fixed seat and connected to the primary filter board, and the output end is fixed on the fixed seat and connected to the secondary filter board.

[0004] In this patent application, the positive and negative copper bars are arranged in parallel. Due to the structure of the positive and negative copper bars themselves, they have a larger overall width after being arranged in parallel. In practice, a magnetic ring with a larger inner diameter is also required to match it, but the overall structure is larger in volume and will occupy a larger installation space.

[0005] Therefore, providing an EMC filtering component is an issue worthy of study. Utility Model Content

[0006] In order to address the deficiencies in the above-mentioned prior art, the purpose of the present invention is to be able to position and quickly install multiple components, the overall structure of the device is more compact, the stability and conductivity are also improved, the filtering circuit improves the safety of the electrical system and extends the service life of the equipment.

[0007] The purpose of this utility model is achieved in this way:

[0008] The utility model provides an EMC filter component, comprising a base and a linear copper busbar, wherein the linear copper busbars are two in number and are arranged side by side and spaced apart. The base is provided with a positioning groove for accommodating the linear copper busbar, and both ends of the linear copper busbar are provided with a terminal for line connection;

[0009] The base is clamped with a magnetic ring which is sleeved on the outside of the two linear copper bars;

[0010] The base is provided with a Y capacitor electrically connected to the linear copper busbar, and the base is provided with a grounding terminal electrically connected to the Y capacitor lead for assisting the grounding of the Y capacitor;

[0011] An X capacitor is electrically connected between the two linear copper busbars, and the Y capacitor, the X capacitor, the magnetic ring and the linear copper busbar together constitute a filter circuit.

[0012] Furthermore, there are two groups of filtering circuits, which are distributed along the length direction of the straight copper busbar.

[0013] Furthermore, the connection terminal and the linear copper busbar are flexibly bent.

[0014] Furthermore, a frame is provided on the base, a partition frame is provided on the width midline of the frame, a separation frame corresponding to the partition frame is provided inside the frame, and a positioning groove is formed between the partition frame and the separation frame.

[0015] Furthermore, the partition frame is provided with a mounting groove corresponding to the magnetic ring along its length direction, and the separation frame is "concave" shaped, and its "concave" position is provided corresponding to the mounting groove for clamping the magnetic ring.

[0016] Furthermore, a positioning cavity for accommodating the Y capacitor is formed between the frame frame and the separation frame.

[0017] Furthermore, the height of the partition frame is higher than that of the frame frame, and a clamping groove extending to the upper surface is provided on the side wall of the partition frame, and the clamping groove is provided corresponding to the X capacitor.

[0018] Furthermore, the base is provided with a mounting post corresponding to the wiring terminal.

[0019] Furthermore, the base, the frame frame, the partition frame, the separation frame, and the mounting column are integrally formed.

[0020] Furthermore, the grounding terminal is at a right angle, its vertical side wall is integrally formed on the frame, and its horizontal side wall is formed on the base.

[0021] Positive beneficial effects:

[0022] This device realizes the rapid installation of straight copper busbar, Y capacitor, X capacitor and magnetic ring through reasonable structural design and flexible connection mode, which enhances the stability and conductive performance of the device.

[0023] At the same time, the magnetic ring can effectively suppress electromagnetic interference and improve the anti-interference ability of the equipment, while the Y capacitor and X capacitor can improve the power quality, reduce electrical noise and ensure the stable operation of the circuit;

[0024] This filter circuit design not only improves the safety of the electrical system, but also enhances the durability of the system and extends the service life of the equipment;

[0025] Overall, the device has a compact structure, is easy to install and maintain, and occupies a smaller volume. It performs well in electrical performance, operational convenience, and stability, and has broad application potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the utility model;

[0027] Figure 2 It is a top view of the utility model;

[0028] Figure 3 This is a schematic diagram of the installation structure of the utility model;

[0029] The figure shows: base 1, frame 101, partition frame 102, positioning slot 102a, mounting slot 102b, separation frame 103, positioning cavity 103a, mounting column 104, straight copper bus 2, terminal block 201, Y capacitor 3, X capacitor 4, magnetic ring 5, ground terminal 6; DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] See also Figure 1-Figure 3As shown, the utility model provides an EMC filter component, including a base 1 and a linear copper busbar 2, the number of which is two, and the long sides of the two linear copper busbars 2 correspond to each other, wherein the width directions are arranged facing each other, and when the linear copper busbar 2 is installed, a positioning groove 102a for accommodating the linear copper busbar 2 is provided on the base 1, and the two linear copper busbars 2 are respectively placed in the two positioning grooves 102a, so that the two linear copper busbars 2 are arranged at intervals on the base 1, and wiring terminals 201 for line connection are provided at both ends of the linear copper busbar 2, and the wiring terminals 201 are connected to one side of the linear copper busbar 2 and are connected to the linear copper busbar 2 in a flexibly bent state. Furthermore, the wiring terminals 201 and the linear copper busbar 2 are integrally formed, and the linear copper busbar 2 and the wiring terminals 201 are made of copper. The copper material has plasticity and can be bent manually or mechanically, thereby meeting the flexible bending and conductive effects of the linear copper busbar 2 and the wiring terminals 201;

[0032] A magnetic ring 5 is clamped on the base 1. The magnetic ring 5 has a closed frame structure and is sleeved on the outside of the linear copper bus 2. Since the terminal block 201 and the linear copper bus 2 are in a bendable state, when the magnetic ring 5 is installed, the terminal block 201 is folded to a state corresponding to the linear copper bus 2, and the terminal block 201 and the linear copper bus 2 are parallel or at an angle less than 60 degrees as much as possible, so that the linear copper bus 2 can pass through the inside of the magnetic ring 5. After the terminal block 201 passes through the inside of the magnetic ring 5, the terminal block 201 is rotated to a state perpendicular to the linear copper bus 2, so that the motor controller circuit can be connected through the terminal block 201. After the terminal block 201 is bent, the linear copper bus 2 can pass through the smaller inner ring of the magnetic ring 5, which has a wide range of applications.

[0033] After placing the Y capacitor 3, X capacitor 4, and magnetic ring 5 at corresponding positions on the base 1, the Y capacitor 3 and X capacitor 4 are electrically connected to the linear copper bus 2, that is, one end of the Y capacitor 3 is electrically connected to the linear copper bus 2, and the X capacitor 4 is electrically connected between the two linear copper bus 2. A grounding terminal 6 is provided on the base 1, which can be easily connected to the Y capacitor 3. After welding at the corresponding electrical connection position, it is fixed to the base 1 by glue filling after welding;

[0034] When the device is in use, the grounding operation can be conveniently performed through the external pin of the grounding terminal 6, thereby realizing the grounding of the Y capacitor 3, and the operation is simpler and more convenient; the Y capacitor 3, the X capacitor 4, the magnetic ring 5 and the straight copper bus 2 together constitute a filter circuit; when the device is in use, the wiring terminal 201 can be directly connected to the motor controller, and the base 1 can be fixed with corresponding bolts through the mounting holes on the base 1. After fixation, the straight copper bus 2, the Y capacitor 3, the X capacitor 4, and the magnetic ring 5 are also fixed, and the corresponding grounding bolts or leads are used to connect the line with the grounding terminal 6, thus completing the installation of the device; the Y capacitor 3, the X capacitor 4, the magnetic ring 5 and the straight copper bus 2 together constitute a filter circuit to remove electromagnetic interference. The filter component of the present invention is arranged as a whole at the power inlet position of the high-voltage motor controller to ensure the stability of the control signal, improve the interference suppression capability of the DC bus, and will not affect the normal operation of other electronic components inside the motor controller, making the product more reliable.

[0035] In the overall structure of the device, the linear copper busbar 2 and the Y capacitor 3 are mainly installed in a symmetrical manner along the width midline of the base 1. The EMC component has a compact structure and is easy to install. The symmetrical design improves the filtering performance and can form a CLCL or LCLC filtering circuit to optimize electromagnetic compatibility.

[0036] In some embodiments, there are two groups of filtering circuits, which are distributed along the length of the straight copper busbar 2, where the magnetic ring 5 is arranged close to the power input port. Two groups of filtering circuits can achieve two-stage filtering, protect subsequent circuits, reduce pulsation during motor control, and improve system stability and performance.

[0037] The base 1 is provided with a frame 101, which is a frame-shaped structure. The frame 101 is formed and arranged on the surface of the base 1. A partition frame 102 is provided on the width midline of the frame 101. A partition frame 102 is provided at the width midline of the frame 101. The partition frame 102 extends along the length direction of the frame 101, and the partition frame 102 is provided with a mounting groove 102b corresponding to the magnetic ring 5. The partition frame 102 can separate the frame 101 into two accommodating cavities. A separation frame 103 is provided inside the accommodating cavity. The separation frame 103 It is arranged corresponding to the partition frame 102, that is, the separation frame 103 extends along the length direction of the partition frame 102, and a long strip of positioning groove 102a for accommodating the linear copper bus 2 is formed between the separation frame 103 and the partition frame 102. The terminal 201 is inserted into the positioning groove 102a with the thickness side during installation. In the structure of the separation frame 103, the separation frame 103 is "concave", and its "concave" position is corresponding to the installation groove 102b, which is used to clamp the magnetic ring 5. The magnetic ring 5 can be inserted through the installation groove 102b and the "concave" position. To achieve the installation limit of the magnetic ring 5; when the partition frame 102 is installed, it can be installed on the inner side of the positioning groove 102a by longitudinal plugging, and the terminal 201 on the straight copper bus 2 is arranged perpendicular to the straight copper bus 2, then the terminal 201 is located at a position corresponding to the long side of the partition frame 102 and the frame frame 101, and the base 1 is provided with a mounting post 104 corresponding to the terminal 201, and since the straight copper bus 2 is electrically connected to the Y capacitor 3, there is a cavity between the separation frame 103 and the long side of the frame frame 101, which is the positioning cavity 103a, It is possible to accommodate the Y capacitor 3. Furthermore, the height of the partition frame 102 is higher than the frame frame 101. A clamping groove extending to the upper surface is provided on the side wall of the partition frame 102. The clamping groove is provided corresponding to the X capacitor 4, which can achieve the accommodation and limitation of the X capacitor 4. When the device is actually installed, the linear copper bus 2, the magnetic ring 5, the Y capacitor 3, and the X capacitor 4 can be positioned by clamping. After the electrical connection, the linear copper bus 2, the Y capacitor 3, the X capacitor 4, and the magnetic ring 5 can be further fixed by glue injection, so that the device forms an integral structure.

[0038] Furthermore, the base 1, the frame 101, the partition frame 102, the separation frame 103, and the mounting column 104 are made of the same material and are processed in an integrated manner. The entire device constitutes an integrated structure, which can easily position the linear copper bus 2, the Y capacitor 3, the X capacitor 4, and the magnetic ring 5 to facilitate subsequent electrical welding operations. It is very convenient to achieve the overall installation and positioning of the device, and the operation is more convenient.

[0039] In a preferred embodiment, the grounding terminal 6 is at a right angle, its vertical side wall is integrally formed on the frame 101, and its horizontal side wall is formed on the base 1. The connection terminal extending from the grounding terminal 6 to the base 1 is exposed to facilitate wiring operations, and the high end of the vertical end of the grounding terminal 6 passes through the frame 101 to facilitate line connection with the Y capacitor 3.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An EMC filter assembly, comprising a base (1) and a straight copper busbar (2), characterized in that: There are two linear copper bars (2), and the two linear copper bars (2) are arranged side by side and spaced apart. A positioning groove (102a) for accommodating the linear copper bar (2) is provided on the base (1), and both ends of the linear copper bar (2) are provided with connection terminals (201) for line connection. The base (1) is clamped with a magnetic ring (5) which is sleeved on the outside of the two linear copper bars (2); The base (1) is provided with a Y capacitor (3) electrically connected to the linear copper busbar (2), and the base (1) is provided with a grounding terminal (6) electrically connected to the lead of the Y capacitor (3) for assisting the grounding of the Y capacitor (3); An X capacitor (4) is electrically connected between the two straight copper busbars (2), and the Y capacitor (3), the X capacitor (4), the magnetic ring (5) and the straight copper busbars (2) together constitute a filter circuit.

2. The EMC filter component according to claim 1, characterized in that: There are two groups of filter circuits, which are distributed along the length direction of the straight copper busbar (2).

3. An EMC filter component according to claim 1 or 2, characterized in that: The connection terminal (201) and the straight copper busbar (2) are flexibly bent.

4. The EMC filter component according to claim 3, characterized in that: The base (1) is provided with a frame frame (101), a partition frame (102) is provided at the width midline of the frame frame, a separation frame (103) corresponding to the partition frame (102) is provided in the frame frame (101), and a positioning groove (102a) is formed between the partition frame (102) and the separation frame (103).

5. The EMC filter component according to claim 4, characterized in that: The partition frame (102) is provided with a mounting groove (102b) corresponding to the magnetic ring (5) along its length direction, and the separation frame (103) is in a "concave" shape, with its "concave" position corresponding to the mounting groove (102b) and used for clamping the magnetic ring (5).

6. The EMC filter component according to claim 5, characterized in that: A positioning cavity (103a) for accommodating the Y capacitor (3) is formed between the frame (101) and the separation frame (103).

7. The EMC filter component according to claim 5, characterized in that: The height of the partition frame (102) is higher than that of the frame frame (101), and a clamping groove extending to the upper surface is provided on the side wall of the partition frame (102), and the clamping groove is provided corresponding to the X capacitor (4).

8. An EMC filter component according to claim 6 or 7, characterized in that: The base (1) is provided with a mounting post (104) corresponding to the wiring terminal (201).

9. The EMC filter component according to claim 8, characterized in that: The base (1), the frame frame (101), the partition frame (102), the separation frame (103), and the mounting column (104) are integrally formed.

10. The EMC filter component according to claim 9, characterized in that: The grounding terminal (6) is at a right angle, its vertical side wall is integrally formed on the frame (101), and its horizontal side wall is formed on the base (1).

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