Filter module
By using a copper busbar coil-encircled magnetic ring design and a filter module filled with thermal grease, the problems of poor filtering and heat dissipation were solved, resulting in higher inductance and stability, and extended service life.
Patent Information
- Application Number
- CN202422874291.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-11-25
AI Technical Summary
Existing filter structures have poor filtering performance and inadequate heat dissipation, resulting in unstable operation.
The design employs a copper busbar coil surrounding a magnetic ring to increase the number of inductance turns. Thermal grease is filled into the mounting slots on the substrate, and cooling channels are used for heat dissipation. The copper busbar is connected to the PCB board through PCB manufacturing processes.
It improves filtering performance, enhances heat dissipation, increases the stability and lifespan of the filter module, and reduces development costs.
Smart Images
Figure CN223613671U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to motor controller technical field, especially relate to a filter module. BACKGROUND
[0002] In recent years, the whole new energy automobile industry presents the vigorous development situation. Among them, the driving motor system as the power output unit of the whole vehicle determines the power performance of electric vehicle, so it is called the "heart" of new energy automobile, its importance is prominent undoubtedly. In the new energy automobile electric drive power assembly, the motor controller controls and drives the motor to run through the power module such as IGBT, and the higher working frequency of the power module determines that the electromagnetic filtering needs to be carried out in a certain frequency range through the filtering device, so as to ensure that the electric drive system has good EMC (Electro Magnetic Compatibility) performance, that is, electromagnetic compatibility performance. With the development of electric vehicles, the requirement of electromagnetic compatibility performance is higher and higher.
[0003] The existing filtering device is mainly composed of current-carrying copper bar, magnetic ring, capacitor, printed circuit board (PCB) and injection molding structural part, and the current multi-stage filter mainly adopts segmented current-carrying copper bar, and is connected through high-power welding after the assembly of the magnetic core is completed. The filter capacitors of each stage are arranged and electrically connected by using the PCB. The current-carrying copper bar is electrically connected with the PCB through adapter parts and wave soldering process, or is connected with the PCB through screws. The whole filter is filled to fix and integrate the magnetic core, the PCB, the current-carrying copper bar, electronic devices and other sub-parts.
[0004] The above-mentioned filter structure has the following defects: since the filter design adopts the copper bar passing through the magnetic core, the inductance number of turns is small, and the filtering effect is poor. Moreover, the heat dissipation effect of the filter is poor, and the stability cannot be guaranteed. Therefore, it is urgent to design a new filter module to meet the use requirement of the motor controller. UTILITY MODEL CONTENTS
[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a filter module, which has good filtering effect and heat dissipation effect and long service life.
[0006] In order to realize the above-mentioned utility model purpose, the utility model adopts the following technical scheme:
[0007] A filter module, comprising a substrate, a copper bar and a magnetic ring, the substrate is provided with a mounting groove, the copper bar and the magnetic ring are arranged in the mounting groove, the middle part of the copper bar is further provided with a copper bar coil, and the copper bar coil is arranged around the magnetic ring, the upper part of the copper bar is further provided with a PCB, and the mounting groove is further filled with heat-conducting silicone grease.
[0008] As a preferred scheme, the copper bars are two, arranged side by side, two copper bar coils are arranged on each copper bar at intervals, and the copper bar coils on the two copper bars are arranged on the two sides of the two magnetic rings respectively.
[0009] As a preferred scheme, the substrate is further provided with a plurality of IGBT devices, and the substrate is further provided with a cooling channel, which cools the IGBT devices and the copper bars in the mounting groove.
[0010] As a preferred scheme, the cooling channel comprises a cooling liquid inlet and a cooling liquid outlet arranged on both sides of the substrate, the cooling liquid inlet and the cooling liquid outlet are communicated through a cooling liquid flow channel, and the cooling liquid flow channel flows through the mounting groove and the lower part of the IGBT device.
[0011] As a preferred scheme, the IGBT device is a plurality of IGBT devices, and the substrate below the plurality of IGBT devices is provided with an IGBT cooling cavity, a plurality of through holes corresponding to the pins of the IGBT device are arranged in the IGBT cooling cavity, and the two sides of the IGBT cooling cavity are communicated with the cooling liquid inlet and the cooling liquid flow channel respectively.
[0012] Compared with the prior art, the filter of the present application has the following beneficial effects:
[0013] The copper bar coil in the filter of the present application is designed in a way of surrounding the magnetic ring, which increases the number of turns of inductance, improves the inductance, and helps to improve the filtering effect; and the copper bar, magnetic ring and other components in the filter utilize the mounting groove on the substrate, and the mounting groove is filled with heat-conducting silicone grease, which helps to improve the heat dissipation effect, increase the stability of the filter module, and prolong the service life. BRIEF DESCRIPTION OF DRAWINGS
[0014] The drawings accompanying the specification of the present application are used to provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute limitation of the present application.
[0015] Fig. 1 is a structural schematic diagram of the present application;
[0016] Fig. 2 is an exploded structural schematic diagram of the present application;
[0017] Fig. 3 is an internal cooling structure schematic diagram of the substrate of the present application.
[0018] The drawings are as follows: 1, substrate; 11, cooling liquid inlet; 12, cooling liquid outlet; 13, cooling liquid flow channel; 2, mounting groove; 21, heat-conducting silicone grease; 3, copper bar; 31, copper bar coil; 4, PCB board; 5, IGBT device; 51, IGBT cooling cavity. DETAILED DESCRIPTION
[0019] It should be noted that the following detailed description is exemplary in nature and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0020] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.
[0021] In addition, in the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0022] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more, unless otherwise explicitly limited.
[0023] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0024] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, can include that first and second features are direct contact, also can include that first and second features are not direct contact but contact through other feature between them.Moreover, first feature "on", "above" and "on" second feature include that first feature is directly above and obliquely above second feature, or just indicate that first feature horizontal height is higher than second feature.First feature "under", "below" and "under" second feature include that first feature is directly below and obliquely below second feature, or just indicate that first feature horizontal height is less than second feature.
[0025] The utility model makes further explanation from the following combined with the drawings and examples:
[0026] As Figs. 1 to 3 The utility model discloses a filter module, including base plate 1, copper bar 3 and magnetic ring, be equipped with mounting groove 2 on base plate 1, copper bar 3 and magnetic ring set up in mounting groove 2, the middle part of copper bar 3 is also equipped with copper bar coil 31, and copper bar coil 31 surrounds the magnetic ring setting, copper bar 3 is two, and is arranged side by side, and two copper bar coils 31 are set up on each copper bar 3, and copper bar coil 31 on two copper bars 3 is set around two sides of two magnetic rings, the upper portion of copper bar 3 is also equipped with PCB board 4, the mounting groove 2 is also filled with heat-conducting silicone grease 21.
[0027] The base plate 1 is also provided with a plurality of IGBT devices 5, and the cooling channel is also provided in the base plate 1, and the cooling channel cools the IGBT device 5 and the copper bar 3 in the mounting groove 2. The cooling channel includes cooling liquid inlets 11 and cooling liquid outlets 12 arranged on both sides of the base plate 1, and the cooling liquid inlets 11 and the cooling liquid outlets 12 are communicated through a cooling liquid flow channel 13, and the cooling liquid flow channel 13 flows through the mounting groove 2 and the lower part of the IGBT device 5.
[0028] The IGBT device 5 is a plurality of IGBT devices 5, and the base plate 1 on the lower part of the plurality of IGBT devices 5 is provided with an IGBT cooling cavity 51, a plurality of through holes corresponding to the pins of the IGBT device 5 are arranged in the IGBT cooling cavity 51, and the two sides of the IGBT cooling cavity 51 are communicated with the cooling liquid inlets 11 and the cooling liquid flow channel 13, respectively.
[0029] The copper bar coil in the filter of the utility model adopts the design of surrounding the magnetic ring, increases the inductance number of turns, improves the inductance, and helps to improve the filtering effect; and the copper bar, the magnetic ring and other components in the filter utilize the mounting groove on the base plate, and the heat-conducting silicone grease is filled in the mounting groove, which helps to improve the heat dissipation effect, increase the stability of the filter module, and prolong the service life.
[0030] The utility model discloses further set up cooling channel on the base plate, add cooling liquid in the cooling channel and help the filter heat dissipation, further improve the heat dissipation effect, the copper row of the utility model is connected with PCB board, uses PCB production technology, need not injection moulded part opening mould, reduces the development cost.
[0031] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0032] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as the limitation of the utility model. The ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments in the range of the utility model without departing from the principles and the tenet of the utility model. Any simple modification, equivalent change and modification made according to the technical essence of the utility model to the above-mentioned embodiments still belong to the range of the technical scheme of the utility model.
Claims
1. A filter module, characterized by: The application relates to a copper bar cooling device, which comprises a substrate (1), a copper bar (3) and a magnetic ring, the substrate (1) is provided with a mounting groove (2), the copper bar (3) and the magnetic ring are arranged in the mounting groove (2), the middle part of the copper bar (3) is further provided with a copper bar coil (31), the copper bar coil (31) surrounds the magnetic ring, the upper part of the copper bar (3) is further provided with a PCB (4), and the mounting groove (2) is further filled with heat-conducting silicone grease (21).
2. A filter module according to claim 1, characterised in that The copper bar (3) is in two pieces and arranged in parallel, two copper bar coils (31) are arranged on each copper bar (3) at intervals, and the copper bar coils (31) on the two copper bars (3) are arranged on the two sides of the two magnetic rings respectively.
3. The filter module of claim 1, wherein, The substrate (1) is further provided with a plurality of IGBT devices (5), and the substrate (1) is further provided with a cooling channel, which cools the IGBT devices (5) and the copper bar (3) in the mounting groove (2).
4. A filter module according to claim 3, characterised in that The cooling channel comprises cooling liquid inlets (11) and cooling liquid outlets (12) arranged on the two sides of the substrate (1), the cooling liquid inlets (11) and the cooling liquid outlets (12) are communicated through a cooling liquid flow channel (13), and the cooling liquid flow channel (13) flows through the mounting groove (2) and the lower part of the IGBT device (5).
5. A filter module according to claim 4, characterised in that The IGBT device (5) is a plurality of IGBT devices (5), the lower part of the substrate (1) of the plurality of IGBT devices (5) is provided with an IGBT cooling cavity (51), a plurality of through holes corresponding to the pins of the IGBT device (5) are arranged in the IGBT cooling cavity (51), and the two sides of the IGBT cooling cavity (51) are communicated with the cooling liquid inlet (11) and the cooling liquid flow channel (13) respectively.