CN220653342U - High-voltage filter - Google Patents

Abstract

The application discloses high-pressure filter, include: the device comprises a shell, a first conductive piece, a second conductive piece, a magnetic ring, a first filtering component and a second filtering component, wherein a first cavity for the embedded installation of the first conductive piece and a second cavity for the embedded installation of the second conductive piece are formed in the shell, the first conductive piece and the second conductive piece are respectively provided with an input end and an output end which are opposite in position, the positive end and the negative end of the first filtering component are respectively and correspondingly connected with the positive end and the negative end of the input end of the first conductive piece, the positive end and the negative end of the second filtering component are respectively and correspondingly connected with the positive end and the negative end of the output end of the first conductive piece, and the magnetic ring is wound around the output ends of the first conductive piece and the second conductive piece. The application cancels the PCB, optimizes the internal layout structure of the filter, and simultaneously realizes multistage filtering.

Description

High-voltage filter

Technical Field

The application relates to the technical field of filter equipment, in particular to a high-voltage filter.

Background

New energy automobiles are rapidly developed under the support of the great force of national policies, and generally, the operation under high-power whole vehicle power has great design challenges for the electrical connection of filters in a motor controller system. The filter is used as a key device for filtering, removing low-frequency noise and optimizing EMC electromagnetic parameters in an electric drive system. From the compact space of the electric drive controller, the structure of the filter needs to connect a plurality of functional components such as a capacitor device, a magnetic ring, positive and negative high voltage bars and the like, so that the complexity of the filter is increased, the current industry widely adopts PCB circuit board bridging to connect a plurality of capacitors on a PCB, then the positive and negative high voltage copper bars are conducted, and the fixation is realized by means of bolts. However, the scheme also has a plurality of defects, such as increasing the cost of the filter, customizing the PCB, increasing the design cost and the connection mode, and the technical requirement of the current of the PCB is too complex, and the reliability has certain hidden trouble in the design concept; in addition, as the circuit length is prolonged, the capacitance of the small capacitance is diluted in the connecting long-line circuit, the functional utility of the small capacitance is lost, and the electrical design principle is destroyed.

Disclosure of Invention

The aim of the embodiment of the application is that: the utility model provides a high-voltage filter, it can solve the above-mentioned problem that exists among the prior art, has cancelled the PCB board, has optimized the inside layout structure of filter, has still realized multistage filtering simultaneously.

In order to achieve the above purpose, the present application adopts the following technical scheme:

in one aspect, there is provided a high-pressure filter comprising: the device comprises a shell, a first conductive piece, a second conductive piece, a magnetic ring, a first filtering component and a second filtering component, wherein a first cavity for the embedded installation of the first conductive piece and a second cavity for the embedded installation of the second conductive piece are formed in the shell, the first conductive piece and the second conductive piece are respectively provided with an input end and an output end which are opposite in position, the positive end and the negative end of the first filtering component are respectively and correspondingly connected with the positive end and the negative end of the input end of the first conductive piece, the positive end and the negative end of the second filtering component are respectively and correspondingly connected with the positive end and the negative end of the output end of the first conductive piece, and the magnetic ring is wound around the output ends of the first conductive piece and the second conductive piece.

Optionally, the filter further comprises at least two grounding pieces, wherein the two grounding pieces are respectively connected with the grounding end of the first filter assembly and the grounding end of the second filter assembly.

Optionally, the first filtering component includes a first X capacitor and two first Y capacitors, where the two first Y capacitors are installed in parallel on the housing, one of the first Y capacitors is connected to the input end of the first conductive element, the other first Y capacitor is connected to the input end of the second conductive element, and the first X capacitor is connected to the input end of the first conductive element and the input end of the second conductive element respectively;

and/or the second filter assembly comprises a second X capacitor and two second Y capacitors, wherein the two second Y capacitors are arranged on the shell in parallel, one of the second Y capacitors is connected with the output end of the first conductive piece, the other second Y capacitor is connected with the output end of the second conductive piece, and the second X capacitors are respectively connected with the output end of the first conductive piece and the output end of the second conductive piece.

Optionally, the first conductive member includes a first conductive column disposed on the output end, the first conductive column is inserted in the middle of the magnetic ring, the second conductive member includes a second conductive column corresponding to the first conductive column, and the second conductive column is inserted in the middle of the magnetic ring and is spaced apart from the first conductive column.

Optionally, the top of the first conductive column is connected with a first conductive strip, the second X capacitor and one of the second Y capacitors are respectively connected with the first conductive strip, the top of the second conductive column is connected with a second conductive strip, and the second X capacitor and the other of the second Y capacitors are respectively connected with the second conductive strip.

Optionally, the first and second conductive strips are each bolted to the housing.

Optionally, a first conductive part is convexly arranged on the first conductive part towards a direction away from the shell, the first conductive part is respectively connected with the first X capacitor and one of the first Y capacitors, a second conductive part corresponding to the first conductive part is convexly arranged on the second conductive part, and the second conductive part is respectively connected with the first X capacitor and the other first Y capacitor.

Optionally, the filter further comprises a first cover plate and a second cover plate, wherein the first cover plate is arranged on the first filter assembly and fixedly connected with the shell, and the second cover plate is arranged on the second filter assembly and fixedly connected with the shell.

Optionally, the first conductive member and the second conductive member are copper bars.

Optionally, the input end and the output end of the first conductive element are arranged at intervals along the horizontal direction and are staggered along the vertical direction.

The beneficial effects of this application are: through setting up filter module direct connection electrically conductive spare, the design of PCB board has been cancelled for high low pressure line connection structure becomes simple, equipment is also convenient, processing cost and material cost reduce, avoid the high pressure to be qualified for next round of competitions the arranging of other spare parts of back interference, be favorable to satisfying the whole car of new energy automobile and arrange the demand, realize new energy automobile connector integrate, miniaturized, the installation is convenient, carry out twice filtering to the electric current transmission simultaneously through setting up two filter modules, realize better filtering, noise reduction effect, moreover because filter module is the direct connection electrically conductive spare, so circuit length is shorter, the appearance value of electric capacity in the circuit can not appear by the diluted condition, ensure the functional utility of electric capacity, it is more ensured and reliable to electric property's connection switches on.

Drawings

The present application is described in further detail below with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a high-voltage filter according to an embodiment of the present application;

fig. 2 is a schematic diagram of an internal structure of a high-voltage filter according to an embodiment of the present application;

FIG. 3 is an exploded view of a high voltage filter according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a first conductive member and a second conductive member according to an embodiment of the present application;

fig. 5 is a schematic structural view of a housing according to an embodiment of the present application.

In the figure:

1. a housing; 101. a first cavity; 102. a second cavity; 103. a capacitance cavity; 104. a ring cavity; 2. a first conductive member; 201. a first input; 202. a first output terminal; 203. a first conductive portion; 3. a second conductive member; 301. a second input terminal; 302. a second output terminal; 303. a second conductive portion; 4. a magnetic ring; 5. a first filtering component; 501. a first X capacitor; 502. a first Y capacitance; 6. a second filtering component; 601. a second X capacitor; 602. a second Y capacitor; 7. a first conductive strip; 8. a second conductive strip; 9. a first cover plate; 10. a second cover plate; 11. a grounding member; 12. a bolt; 13. a first conductive pillar; 14. and a second conductive post.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present application more clear, the technical solutions of the embodiments of the present application are described in further detail below, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, unless explicitly stated and limited otherwise, the terms "connected," "secured" and "fixed" are to be construed broadly, as for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

As shown in fig. 1 to 4, the present embodiment provides a high-voltage filter including: the shell 1, first electrically conductive piece 2, second electrically conductive piece 3, magnetic ring 4, first filtering subassembly 5 and second filtering subassembly 6, offer in the shell 1 confession first cavity 101 of first electrically conductive piece 2 gomphosis installation, and confession the second cavity 102 of second electrically conductive piece 3 gomphosis installation, first electrically conductive piece 2 with second electrically conductive piece 3 all have the input and the output that the position is relative, the positive and negative extreme of first filtering subassembly 5 respectively with first electrically conductive piece 2 the positive negative pole of the input of second electrically conductive piece 3 corresponds to be connected, the positive and negative extreme of second filtering subassembly 6 respectively with first electrically conductive piece 2 the positive and negative pole of the output of second electrically conductive piece 3 corresponds to be connected, magnetic ring 4 winds and locates first electrically conductive piece 2 with the output of second electrically conductive piece 3.

Based on the above scheme, with first electrically conductive piece 2, second electrically conductive piece 3, magnetic ring 4, first filter module 5 and second filter module 6 all integrate on casing 1, and the whole space of wave filter is compacter, make full use of effectual installation space, can also improve the stability and the reliability of connection simultaneously. Specifically, the first cavity 101 and the second cavity 102 formed on the housing 1 can be respectively provided for embedded installation of the first conductive element 2 and the second conductive element 3, that is, the first conductive element 2 and the second conductive element 3 are in hidden installation in the housing 1, and only the input end and the output end are exposed for connection and current transmission; in order to be understood more clearly, the input end of the first conductive element 2 is defined as the first input end 201, the output end is defined as the first output end 202, the input end of the second conductive element 3 is defined as the second input end 301, the output end is defined as the second output end 302, the first filtering component 5 arranged at the first input end 201 and the second input end 301, and the second filtering component 6 arranged at the first output end 202 and the second output end 302 can effectively filter and reduce noise of the current transmitted through the conductive element, and the filtering processing is performed from the beginning end and the ending end of the current transmission, so that the current transmitted through the conductive element can be faster and more, the overall transmission efficiency is higher, and the first filtering component 5 can be used for primary filtering the current transmission, and the second filtering component 6 can be used for final filtering before the current is output. In addition, the main function and function of the magnetic ring 4 arranged on the shell 1 are to filter high-frequency noise in an input signal, because the high-frequency noise can cause interference to the normal operation of an electronic system, the magnetic ring 4 can enable an output signal of the system to be clearer and more stable after filtering the noise, meanwhile, the output signal can be smoother and more stable, fluctuation in frequency response is reduced, stability of the system is improved, and particularly, transmission of the high-frequency signal from input to output is blocked through inductive coupling, so that filtering of the high-frequency noise is realized, and because the magnetic ring 4 has higher inductance value and magnetic conductivity, transmission of the high-frequency signal can be blocked within a certain range, and flow of a low-frequency signal is kept; meanwhile, the filtering effect of the magnetic ring 4 can reduce the sensitivity of the electronic element to high-frequency noise and prolong the service life of the electronic element.

Further, the filter further comprises at least two grounding pieces 11, and the two grounding pieces 11 are respectively connected with the grounding end of the first filter assembly 5 and the grounding end of the second filter assembly 6. In the current conveying process, the wave bands filtered by the first filter assembly 5 and the second filter assembly 6 are discharged out of the system through the grounding piece 11, so that the influence of the residues of the unnecessary wave bands on the filter assemblies on the filtering effect is avoided.

The specific schemes of the first filtering component 5 and the second filtering component 6 at least comprise three parallel schemes, and the specific schemes are as follows: the first filter assembly 5 includes a first X capacitor 501 and two first Y capacitors 502, where the two first Y capacitors 502 are installed on the housing 1 in parallel, one of the first Y capacitors 502 is connected to the first input end 201 of the first conductive element 2, the other first Y capacitor 502 is connected to the second input end 301 of the second conductive element 3, and the first X capacitors 501 are respectively connected to the first input end 201 of the first conductive element 2 and the second input end 301 of the second conductive element 3;

and/or, the second filter assembly 6 includes a second X capacitor 601 and two second Y capacitors 602, where two second Y capacitors 602 are installed on the housing 1 in parallel, one of the second Y capacitors 602 is connected to the first output end 202 of the first conductive element 2, the other second Y capacitor 602 is connected to the second output end 302 of the second conductive element 3, and the second X capacitor 601 is connected to the first output end 202 of the first conductive element 2 and the second output end 302 of the second conductive element 3 respectively.

Based on the above three schemes, it is preferable that the first filter assembly 5 includes a first X capacitor 501 and two first Y capacitors 502, the second filter assembly 6 includes a second X capacitor 601 and two second Y capacitors 602, the two first Y capacitors 502 also need to be connected to the grounding element 11 respectively, and the same two second Y capacitors 602 also need to be connected to the grounding element 11 respectively. It should be noted that the X capacitor is used to remove the differential mode interference, and the Y capacitor is used to remove the common mode interference. In addition, the second X capacitor 601 and the second Y capacitor 602 are respectively connected with the first conductive member 2 and the second conductive member 3 by soldering, and other connection modes are all resistance welded, and the connection between the conductive member and the grounding member 11 is flexibly realized by adopting the combination of various welding processes.

In some embodiments, the first conductive element 2 and the second conductive element 3 are similar in structure, the whole body is in a strip structure, the first input end 201 and the second input end 301 are both extended out of the housing 1, so that external devices can be directly connected, the first output end 202 and the second output end 302 are located in the housing 1, so that the first conductive element 2 further includes a first conductive post 13 disposed on the first output end 202 for facilitating connection of the output ends, the first conductive post 13 is inserted in the middle of the magnetic ring 4, the second conductive element 3 further includes a second conductive post 14 corresponding to the first conductive post 13, the second conductive post 14 is inserted in the middle of the magnetic ring 4 and is spaced apart from the first conductive post 13, and both conductive posts are protruding upward to ensure that the top ends of the two conductive posts are exposed out of the housing 1 for facilitating connection.

In addition, since the two conductive members are both in a strip structure, in order to improve the connection stability between the second filter assembly 6 and the two conductive members, the top end of the first conductive pillar 13 is extended and connected with the first conductive strip 7, the second X capacitor 601 and one of the second Y capacitors 602 are respectively connected with the first conductive strip 7, the top end of the second conductive pillar 14 is extended and connected with the second conductive strip 8, and the second X capacitor 601 and the other of the second Y capacitors 602 are respectively connected with the second conductive strip 8. Since the first conductive post 13 and the second conductive post 14 are both inserted between the magnetic rings 4, a connection gap must exist between the second filter component 6 and the two conductive posts due to the interval between the magnetic rings 4, and the first conductive strip 7 and the second conductive strip 8 are provided to solve the connection problem, so that the second filter component 6 can be stably connected with the two conductive pieces, and meanwhile, the connection structure is relatively stable.

Meanwhile, the shapes of the first conductive strip 7 and the second conductive strip 8 can be adjusted according to the connection layout, that is, the shape is adjusted according to the installation positions of the second filter component 6 and the two conductive posts on the shell 1, and the first conductive strip 7 and the second conductive strip 8 can be linear or curved, which is not particularly limited herein.

In order to ensure the stability of the installation of the first conductive strip 7 and the second conductive strip 8, the first conductive strip 7 and the second conductive strip 8 are locked on the shell 1 through bolts 12, and the bolts 12 are preferably insulating bolts 12, so that unnecessary electric shock accidents are avoided.

Optionally, a first conductive portion 203 is protruding on the first conductive member 2 in a direction away from the housing 1, the first conductive portion 203 is respectively connected with the first X capacitor 501 and one of the first Y capacitors 502, a second conductive portion 303 corresponding to the first conductive portion 203 is protruding on the second conductive member 3, and the second conductive portion 303 is respectively connected with the first X capacitor 501 and the other first Y capacitor 502. The first conductive portion 203 and the second conductive portion 303 are provided to shorten the connection circuit of the capacitor, so as to avoid the dilution of the capacitance value of the capacitor and ensure the filtering performance.

In some embodiments, the filter assembly further comprises a first cover plate 9 and a second cover plate 10, wherein the first cover plate 9 is covered on the first filter assembly 5 and is fixedly connected with the housing 1, and the second cover plate 10 is covered on the second filter assembly 6 and is fixedly connected with the housing 1. The first cover plate 9 is locked on the shell 1 and forms a relatively sealed space with the shell 1, so that the first filter assembly 5 is sealed, the second cover plate 10 is also of the same design principle, and in addition, the shell 1 and the two cover plates adopt a split structural design, so that the filter assembly is convenient to install and maintain and overhaul subsequently.

Preferably, the first conductive member 2 and the second conductive member 3 are copper bars, and the first conductive portion 203 and the second conductive portion 303 are integrally formed.

According to the design requirement of the actual filter, the specific shapes of the shell 1 and the first conductive piece 2 and the second conductive piece 3 which are correspondingly installed are adaptively adjusted, specifically, the first input end 201 and the first output end 202 of the first conductive piece 2 are arranged at intervals along the horizontal direction, and are arranged in a staggered manner along the vertical direction, and the same is true for the second conductive piece 3.

It should be noted that, as shown in fig. 5, the housing 1 is further provided with a capacitor cavity 103 for installing each capacitor and a ring cavity 104 for installing the magnetic ring 4, so that each component of the filter can be stably embedded on the housing 1, and the structure is compact and the layout is more reasonable.

In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are merely for convenience of description and to simplify the operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.

In the description of the present specification, reference to the terms "one embodiment," "example," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principles of the present application are described above in connection with specific embodiments. These descriptions are provided only for the purpose of illustrating the principles of the present application and should not be construed as limiting the scope of the present application in any way. Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification without undue burden from the present disclosure.

Claims (10)

1. A high-voltage filter, comprising: the magnetic filter comprises a shell (1), a first conductive piece (2), a second conductive piece (3), a magnetic ring (4), a first filtering component (5) and a second filtering component (6), wherein a first cavity (101) for the embedded installation of the first conductive piece (2) and a second cavity (102) for the embedded installation of the second conductive piece (3) are formed in the shell (1), the first conductive piece (2) and the second conductive piece (3) are respectively provided with an input end and an output end which are opposite in position, the positive end and the negative end of the first filtering component (5) are respectively connected with the positive end and the negative end of the first conductive piece (2) and the input end of the second conductive piece (3) correspondingly, the positive end and the negative end of the second filtering component (6) are respectively connected with the positive end and the negative end of the output end of the first conductive piece (2) and the second conductive piece (3) correspondingly, and the magnetic ring (4) is wound around the first conductive piece (2) and the output end of the second conductive piece (3).

2. The high voltage filter according to claim 1, further comprising at least two grounding members (11), wherein both grounding members (11) are connected to the grounding terminal of the first filter assembly (5) and the grounding terminal of the second filter assembly (6), respectively.

3. The high voltage filter according to claim 1 or 2, wherein the first filter assembly (5) comprises a first X capacitor (501) and two first Y capacitors (502), the two first Y capacitors (502) being mounted on the housing (1) in parallel, one of the first Y capacitors (502) being connected to the input of the first conductive element (2) and the other first Y capacitor (502) being connected to the input of the second conductive element (3), the first X capacitors (501) being connected to the input of the first conductive element (2) and the input of the second conductive element (3), respectively;

and/or, the second filtering component (6) comprises a second X capacitor (601) and two second Y capacitors (602), the two second Y capacitors (602) are installed on the shell (1) in parallel, one of the second Y capacitors (602) is connected with the output end of the first conductive piece (2), the other second Y capacitor (602) is connected with the output end of the second conductive piece (3), and the second X capacitors (601) are respectively connected with the output end of the first conductive piece (2) and the output end of the second conductive piece (3).

4. A high voltage filter according to claim 3, wherein the first conductive element (2) comprises a first conductive post (13) arranged on the output end, the first conductive post (13) being interposed between the magnetic rings (4), the second conductive element (3) comprises a second conductive post (14) corresponding to the first conductive post (13), the second conductive post (14) being interposed between the magnetic rings (4) and being spaced apart from the first conductive post (13).

5. The high-voltage filter according to claim 4, wherein a first conductive strip (7) is connected to the top end of the first conductive pillar (13), the second X capacitor (601) and one of the second Y capacitors (602) are respectively connected to the first conductive strip (7), a second conductive strip (8) is connected to the top end of the second conductive pillar (14), and the second X capacitor (601) and the other second Y capacitor (602) are respectively connected to the second conductive strip (8).

6. The high-voltage filter according to claim 5, characterized in that the first conductive strip (7) and the second conductive strip (8) are each bolted to the housing (1).

7. A high voltage filter according to claim 3, wherein a first conductive part (203) is protruding from the first conductive part (2) towards a direction away from the housing (1), the first conductive part (203) is respectively connected with the first X capacitor (501) and one of the first Y capacitors (502), a second conductive part (303) corresponding to the first conductive part (203) is protruding from the second conductive part (3), and the second conductive part (303) is respectively connected with the first X capacitor (501) and the other first Y capacitor (502).

8. The high-voltage filter according to claim 1 or 2, further comprising a first cover plate (9) and a second cover plate (10), wherein the first cover plate (9) is arranged on the first filter assembly (5) in a covering manner and is fixedly connected with the shell (1), and the second cover plate (10) is arranged on the second filter assembly (6) in a covering manner and is fixedly connected with the shell (1).

9. The high voltage filter according to claim 1 or 2, characterized in that the first conductive member (2) and the second conductive member (3) are both copper bars.

10. The high-voltage filter according to claim 1 or 2, characterized in that the input end and the output end of the first conductive member (2) are arranged at intervals in the horizontal direction and are arranged in a staggered manner in the vertical direction.