CN217789646U - High-voltage bus filtering device, vehicle-mounted high-voltage device and vehicle - Google Patents

Abstract

The application discloses a high-voltage bus filtering device, a vehicle-mounted high-voltage device and a vehicle, wherein a substrate is provided with a first through hole for penetrating a high-voltage conductor; the conductive component at least covers the inner surface of the first through hole; the copper cladding surrounds the periphery of the conductive assembly and covers the surface of the substrate, the conductive assembly is connected with an external conductive structure, and the copper cladding is divided into an inner ring and an outer ring by a middle fracture zone; the filter assembly is arranged on the fracture zone in a circle mode; the conductive assembly, the copper clad and the filter assembly together form a conductive path connecting the high voltage conductor and the external conductive structure. According to the technical scheme that this application embodiment provided, through the conductive component who sets up, cover copper and filter component go out ground connection with common mode current conduction, realize the purpose of filtering, in order to guarantee this filter equipment's filter effect, cover corresponding filter and conductive device setting on the surface of base plate, realized the face-to-face connection between filter and the high-voltage bus to this filter equipment's filter effect has been guaranteed.

Description

High-voltage bus filtering device, vehicle-mounted high-voltage device and vehicle

Technical Field

The utility model relates to a high-pressure filter especially relates to high-pressure generating line filter, on-vehicle high-pressure device and vehicle.

Background

Along with the continuous development of the new energy automobile electromotion trend, the voltage and the current of vehicle-mounted high-voltage electrical appliance parts are continuously improved, the problem of electromagnetic compatibility caused by the voltage and the current is more and more prominent, and the problem of electromagnetic disturbance caused by a high-voltage bus is increasingly prominent. A novel filtering method is provided for solving the problem of electromagnetic disturbance of a high-voltage bus, so that the anti-electromagnetic interference performance of the high-voltage bus and related parts is improved.

The current filtering scheme of the high-voltage bus mainly adopts a magnetic ring and a Y capacitor, but in the filtering scheme, the negative electrode of the capacitor needs to be grounded to a shell by bypassing the magnetic ring, and the grounding path is too long, so that the high-frequency filtering performance of the capacitor is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks or shortcomings in the prior art, it is desirable to provide a high voltage bus filter device, a vehicle-mounted high voltage device, and a vehicle.

In a first aspect, a high voltage bus filter device is provided, which comprises

The high-voltage conductor comprises a substrate, wherein the substrate is provided with a first through hole for penetrating a high-voltage conductor;

a conductive component covering at least the first via inner surface;

the copper cladding surrounds the periphery of the conductive assembly, covers the surface of the substrate, is connected with the conductive assembly and an external conductive structure, and is divided into an inner ring and an outer ring by a middle fracture zone;

the filter assembly is circumferentially arranged on the fracture zone;

the conductive assembly, the copper clad and the filter assembly together form a conductive path connecting the high voltage conductor and the external conductive structure.

In a second aspect, a vehicle-mounted high-voltage device is provided, wherein the vehicle-mounted high-voltage device is provided with a mounting area, the high-voltage bus filtering device is mounted in the mounting area,

the outer side of the mounting area comprises a metal shell, and the copper-clad outer ring on the high-voltage bus filter device is connected with the metal shell.

In a third aspect, a vehicle is provided, wherein the vehicle is provided with the high-voltage bus filtering device or the vehicle-mounted high-voltage device.

According to the technical scheme that this application embodiment provided, through covering copper at the base plate on the surface, and cover copper and divide into inner ring and outer loop, encircle between the inner ring and the outer loop and set up the filtering component, through the conductive component who sets up, cover copper and filtering component and go out ground connection with common mode current conduction, realize the purpose of filtering, in order to guarantee this filter's filter effect, with corresponding filter and conductive device setting cover on the surface of base plate, the face connection between filter and the high-voltage bus has been realized, the connecting impedance between high-voltage bus and the filter has been reduced greatly, thereby this filter's filter effect has been guaranteed.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1-2 are schematic structural diagrams of a medium-high voltage bus filter device in an implementation;

fig. 3-4 are schematic structural diagrams of a high-voltage bus filtering device in another embodiment.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 and fig. 2, the present embodiment provides a high voltage bus filter device, which includes a substrate 1, where the substrate 1 is provided with a first through hole 10 for passing through a high voltage conductor;

a conductive member 5, wherein the conductive member 5 at least covers the inner surface of the first through hole 10;

copper is covered on the surface of the substrate 1 around the periphery of the conductive assembly 5 and is connected with the conductive assembly 5 and an external conductive structure, and the copper is divided into an inner ring 2 and an outer ring 3 by a middle fracture zone;

the filter assembly 4 is circumferentially arranged on the fracture zone;

the conductive component 5, the copper cladding and the filter component 4 together form a conductive path connecting the high voltage conductor and the external conductive structure.

Among the high voltage bus filter that this embodiment provided, cover copper inner ring 2, filtering component 4 and cover copper outer loop 3 through the installation and conduct away the ground connection with common mode current, realize the purpose of filtering, in order to guarantee this filter's filtering effect, with corresponding relevant device of filtering, for example cover copper and filtering component arrange the surface that covers at PCB base plate 1, the face between filtering device and the high voltage bus is connected, the connecting impedance between high voltage bus and the filtering device has greatly reduced, thereby this filter's filtering effect has been guaranteed. The filter component 4 in this embodiment can adopt the patch capacitor as the filter component, and the patch capacitor has a good high-frequency filtering performance compared with the thin-film capacitor, or adopts the magnetic bead as the filter component, and what kind of concrete adoption can be decided according to actual demands.

Referring to fig. 1, a first through hole 10 is provided in the high-voltage bus filtering device in this embodiment, a high-voltage conductor, such as a copper bar or a copper column of a high-voltage bus, is inserted into the first through hole 10, and meanwhile, a conductive component 5 is provided at a position of the first through hole 10, and the conductive component 5 is in contact with the high-voltage conductor to implement current transmission, where the conductive component 5 is preferably made of a metal material, and the first through hole 10 provided in the PCB substrate 1 is preferably provided at a central position of the PCB substrate 1; and an inner ring 2 coated with copper, a filter component 4 and an outer ring 3 coated with copper are sequentially arranged around the first through hole 10, wherein the structure covers the surface of the PCB substrate 1, and the connection area between the high-voltage conductor and the filter component is increased.

Further, the conductive member 5 includes an elastic conductive ring and a metal cover plate,

the resilient conductive ring is arranged in the first through hole 10,

the metal cover plate covers the surface of the substrate 1 at the periphery of the first through hole 10 and is in contact with the elastic conductive ring.

High voltage conductor inserts first through-hole 10, in order to guarantee that high voltage conductor can be surrounded by the omnidirectional, realize that the face between high voltage conductor and the filtering subassembly is connected, the preferred elastic conducting ring that sets up in first through-hole 10, this conducting ring closely laminates with metal covering plate, through setting up elasticity conducting ring structure, back in high voltage conductor inserts first through-hole 10, the conducting ring tightly wraps up above-mentioned structure, realize the all-round contact with high voltage conductor, and simultaneously, elasticity conducting ring structure has been set up, the shape of first through-hole 10 is also not restricted by high voltage conductor, the shape of first through-hole 10 cross-section is when inequality with high voltage conductor's cross sectional shape, also can closely laminate through the elasticity conducting ring realization, thereby realized high voltage conductor outer surface and filtering device's reliable connection, filtering performance has been promoted.

Further, the elastic conductive ring is a metal spring 53 or conductive foam.

In this embodiment, a metal spring 53 is preferably used as the elastic conductive ring, as shown in fig. 1 and fig. 2, the metal spring 53 is tightly attached to a metal cover plate 51, 52, and the metal spring 53 is used to tightly attach to the high-voltage bus; in this embodiment, when the filter device works, the conduction path of the common mode current on the device is:

high-voltage conductor outer surface → metal spring 53 → [ first metal cover plate 51 → first copper-clad inner ring 21 → first filter assembly 4 → first copper-clad outer ring 31 (→ second copper-clad outer ring 32) ]/[ second metal cover plate 52 → second copper-clad inner ring 22 → second filter assembly 4 → second copper-clad outer ring 32] → metal case (wherein the first and second structures such as the first metal cover plate or the second metal cover plate are structures provided on both surfaces of the substrate, and the specific description thereof is given below);

or, the conductive foam is used as an elastic conductive ring (the conductive foam is not shown in the attached body, and the arrangement position of the conductive foam is consistent with that of the metal spring 53), and the conductive foam can be tightly attached to the high-voltage bus to realize the function of current transmission, wherein the conduction path of the common-mode current is similar to the above path, and the transmission of the metal spring 53 in the middle is changed into the transmission of the conductive foam.

Further, the conductive member 5 includes a metal sheet 54 and a metal cover plate,

the metal sheet 54 is disposed in the first through-hole 10,

the metal cover plate covers the surface of the substrate 1 around the first through hole 10, and is connected to the metal sheet 54.

As shown in fig. 3 and fig. 4, in this embodiment, a portion of the conductive component 5 located in the through hole is further provided in the form of a spring, where the spring is a metal sheet 54 connected to the metal cover plate, the metal sheet 54 is provided in the first through hole 10 and is in contact with the high-voltage conductor to realize electrical connection, and the metal sheet 54 provided in the first through hole 10 increases contact with the high-voltage conductor, thereby improving conduction efficiency.

Further, the metal sheet 54 and the metal cover plate are integrally formed, and the metal sheet is formed by extending the metal cover plate to the through hole.

The conductive element 5 provided in this embodiment is an integrally formed structure, and the structure shown in fig. 3 is formed, and the metal sheet 54 and the metal cover plate are integrally formed, so that the preparation of the conductive element 5 is facilitated, and the installation of each structure is also facilitated, and the conductive element 5 is conveniently installed in the first through hole 10 of the substrate 1.

Furthermore, a plurality of gaps are formed at the edge of the metal sheet 54 to form a plurality of elastic sheets arranged at intervals, and the elastic sheets are obliquely arranged in a direction close to the center of the first through hole 10.

There is certain gap formation to form the structure shown in fig. 3 between each sheetmetal 54, wherein the edge of sheetmetal 54 sets up the breach, make the shell fragment structure that this sheetmetal 54 formed produce deformation more easily, when the high voltage conductor inserts and need to contact through this sheetmetal in the first through-hole 10, the sheetmetal structure that is equipped with the breach produces certain deformation, more enough realize the conduction of better contact assurance current with the high voltage conductor, surface direct contact through conductive component shell fragment and high voltage conductor, realize common mode current's conduction through this conductive component, wherein, common mode current's conduction path on the device is:

the high-voltage conductor outer surface → [ first metal cover plate 51 → first copper-clad inner ring 21 → first filter component 4 → first copper-clad outer ring 31 (→ second copper-clad outer ring 32) ]/[ second metal cover plate 52 → second copper-clad inner ring 22 → second filter component 4 → second copper-clad outer ring 32] → metal case (the first and second structures such as the first metal cover plate or the second metal cover plate mentioned above are structures provided on both surfaces of the substrate, and the specific description thereof will be given below).

In order to ensure that the metal sheet on the conductive assembly can be in full contact with the high-voltage conductor of the high-voltage bus, the elastic sheet at the corresponding position is obliquely arranged and is inclined towards the center of the through hole, and the opening formed by the elastic sheet of the corresponding cover plate is smaller than the opening of the first through hole 10.

The structure provided in this embodiment, in which the elastic piece is disposed on the conductive component 5, may also be applied to the structures shown in fig. 1 and 2, so as to increase the contact area between the cover plate structure and the corresponding high-voltage bus.

Further, the filter assembly 4 comprises a plurality of filter devices, and the filter devices are uniformly distributed around the inner ring 2 and arranged on the fracture zone.

This embodiment sets up the filtering component between outer loop 3 and the inner ring 2 of covering copper, for guaranteeing the filter effect, has set up a plurality of filter devices, and a plurality of filter devices evenly set up between outer loop 3 and inner ring 2, and evenly distributed, distribute and be connected with outer loop and inner ring, realize better filter effect.

Furthermore, the front surface and the back surface of the substrate 1 are both provided with the copper cladding and the filtering component 4.

In order to improve the filtering effect in this embodiment, all set up corresponding copper and the filtering component on the positive and negative surface of base plate, form the same two sides structure, the preferred setting of PCB base plate 1 in this embodiment is the loop configuration, it has first face and the second face that carries on the back mutually, conducting component 2 includes first conducting component 21 and second conducting component 22, install in PCB base plate 1's first through-hole 10, and this conducting component can only set up and also can extend to PCB base plate 1's surface setting in first through-hole, filtering component 4 also includes a plurality of first filtering component 4 and a plurality of second filtering component 4, set up respectively at PCB base plate 1's first face and second face, filtering component 4 one end links to each other with its copper layer structure that covers that is located the one side, realize the electricity and connect, form the structure as shown in fig. 2.

The conductive assembly 5 is divided into a first conductive assembly 51, a second conductive assembly 52, a corresponding conductive spring and other structures, the copper clad is also divided into a first copper clad inner ring 21, a second copper clad inner ring 22, a first copper clad outer ring 31 and a second copper clad outer ring 32, as shown in fig. 1 and 3, the first copper clad inner ring 21 and the first copper clad outer ring 31 are installed on the first surface of the PCB substrate 1, the second copper clad inner ring 22 and the second copper clad outer ring 32 are installed on the second surface of the PCB substrate 1, the installed conductive assemblies are electrically connected with the corresponding first copper clad inner ring 21 or the second copper clad inner ring 22, the current of the high-voltage bus is transmitted through the conductive assemblies, in order to ensure surface connection between the high-voltage bus and the filter assembly, the first conductive assembly 51 and the first copper clad inner ring 21, the second conductive assembly 52 and the second copper clad inner ring 22 are preferably clamped, or the first conductive assembly 51 and the second conductive assembly 52 partially cover the corresponding copper clad inner ring, and the conductive assembly 5 and the copper clad 2 are preferably connected together in a welding manner.

Referring to fig. 2, a conductive component 5, a copper-clad inner ring 2, a filter component 4 and a copper-clad outer ring 3 are sequentially arranged from the center of a PCB substrate 1 to the outside, wherein a first copper-clad inner ring 21 and a second copper-clad inner ring 22 are in the same shape and are arranged on both sides of the PCB substrate 1, and are symmetrically arranged with the PCB substrate 1 as the center, and a first copper-clad outer ring 31 and a second copper-clad outer ring 32 are also in the same shape and are symmetrically arranged with the PCB substrate 1 as the center, wherein the ring shape of the copper-clad inner ring and the ring shape of the copper-clad outer ring can be in various shapes, such as a circular ring or a square ring, and the like, preferably, the circular ring structure shown in fig. 2 is adopted, a plurality of filter components 4 are arranged between the two circular rings, and both ends of the filter components 4 are preferably welded to the first conductive component 2 or the second conductive component 3 respectively.

Furthermore, the outer ring covered with copper is provided with a plurality of second through holes 11, and the covered copper on the front surface and the back surface of the substrate is electrically connected through the second through holes 11.

The filter device provided in the embodiment is generally installed on a vehicle-mounted high-voltage device and electrically connected to a high-voltage bus, wherein a copper-clad outer ring 3 of the filter device is connected to a housing of the vehicle-mounted high-voltage device to achieve grounding, and in order to make the grounding area larger, a first copper-clad outer ring 31 and a second copper-clad outer ring 32 are electrically connected, preferably, a plurality of second through holes 11 are arranged on the copper-clad outer ring, as shown in fig. 2, the connection between an upper metal layer and a lower metal layer is achieved through the second through holes 11, and the number of the second through holes 11 is determined according to actual conditions; the method shortens the length of the grounding wire of the filtering assembly and improves the filtering performance of the filtering device. Further, the first via hole 10 has the same cross-sectional shape as the high voltage conductor.

In order to further ensure that the high-voltage conductor can be completely wrapped, the cross-sectional shape of the first through hole 10 is preferably matched with the cross-sectional shape of the corresponding high-voltage conductor, so that the high-voltage conductor can better adapt to the high-voltage bus, the surface of the high-voltage conductor of the high-voltage bus is tightly attached to the corresponding structure,

the embodiment also provides a vehicle-mounted high-voltage device, which is provided with a mounting area, the high-voltage bus filtering device is mounted in the mounting area,

the outer side of the mounting area comprises a metal shell, and the outer ring coated with copper on the high-voltage bus filter device is connected with the metal shell.

The on-vehicle high-voltage apparatus that this embodiment provided is used on new energy automobile, and the voltage and the continuous promotion of electric current of on-vehicle high-voltage apparatus spare part consequently, need adopt better filtering method to solve the electromagnetic disturbance problem that leads to by the high-voltage bus. The high-voltage bus filter is installed in an installation area of a vehicle-mounted high-voltage device, the high-voltage conductor structure is inserted into the first through hole 10 in the high-voltage bus filter, the copper-coated outer ring is connected to a metal shell of the high-voltage device, preferably, the filter plate can be fixed on the metal shell through a fixing bolt, the copper-coated outer ring on the periphery of the filter plate is connected with the metal shell, and common-mode current is grounded through the metal shell.

Further, the metal case opening is shaped the same as the outer ring.

In this embodiment, the opening shape of the metal shell is preferably set to be the same as the outer annular shape, so that complete connection between the inner ring and the metal shell of the filter device is realized, and surface contact between the inner ring and the metal shell is realized.

The high-voltage bus filtering device provided in the above embodiment realizes the close fit between the surface of the high-voltage conductor and the filtering device, and the two sides of the provided filtering device are both provided with the conducting layer structures, and the conducting layer structures are tightly connected with the metal shell of the vehicle-mounted high-voltage device, so that the grounded metal area is larger, and the filtering device has better filtering performance.

The embodiment also provides a vehicle, and the vehicle is provided with the vehicle-mounted high-voltage device.

The vehicle in the embodiment adopts the vehicle-mounted high-voltage device for filtering, so that a larger contact area and a better filtering effect can be realized.

It will be understood that any orientation or positional relationship indicated above with respect to the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is based on the orientation or positional relationship shown in the drawings and is for convenience in describing and simplifying the invention, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered limiting; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may also be oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.

The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features disclosed herein, and that other combinations of features disclosed herein or their equivalents, in any combination, are also encompassed by the invention without departing from the spirit of the invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (13)

1. A high-voltage bus filtering device is characterized by comprising

The high-voltage conductor comprises a substrate, wherein the substrate is provided with a first through hole for penetrating a high-voltage conductor;

a conductive component covering at least an inner surface of the first via;

copper is covered on the surface of the substrate around the periphery of the conductive assembly and is connected with the conductive assembly and the external conductive structure, and the copper is divided into an inner ring and an outer ring by a middle fracture zone;

the filter assembly is circumferentially arranged on the fracture zone;

the conductive assembly, the copper clad and the filter assembly together form a conductive path connecting the high voltage conductor and the external conductive structure.

2. The high-voltage bus bar filtering device according to claim 1, wherein the conductive assembly comprises an elastic conductive ring and a metal cover plate,

the elastic conductive ring is arranged in the first through hole,

the metal cover plate covers the surface of the substrate at the periphery of the first through hole and is in contact with the elastic conductive ring.

3. The high-voltage bus filtering device according to claim 2, wherein the elastic conductive ring is a metal spring or a conductive foam.

4. The high voltage bus bar filtering device of claim 1, wherein said conductive assembly comprises a metal sheet and a metal cover plate,

the metal sheet is arranged in the first through hole,

the metal cover plate covers the surface of the substrate at the periphery of the first through hole and is connected with the metal sheet.

5. The high-voltage bus bar filtering device according to claim 4,

the metal sheet and the metal cover plate are integrally formed, and the metal sheet is formed by extending the metal cover plate to the through hole.

6. The high-voltage bus filtering device according to claim 4, wherein a plurality of notches are formed in the edge of the metal sheet to form a plurality of elastic sheets arranged at intervals, and the elastic sheets are obliquely arranged in a direction close to the center of the first through hole.

7. The high voltage bus bar filtering device according to claim 1, wherein the filtering assembly comprises a plurality of filtering devices, and the plurality of filtering devices are uniformly distributed around the inner ring and disposed on the fracture zone.

8. The high-voltage bus bar filter device according to claim 1, wherein both the front and back surfaces of the substrate are provided with the copper clad and the filter assembly.

9. The high-voltage bus bar filter device according to claim 8, wherein the outer ring of the copper clad is provided with a plurality of second through holes, and the copper clad on the front and back surfaces of the substrate are electrically connected through the second through holes.

10. The high voltage bus bar filter arrangement according to any of claims 1-9, wherein the first through hole cross-sectional shape is adapted to the cross-sectional shape of the high voltage conductor.

11. A vehicle-mounted high-voltage device, which is characterized in that the vehicle-mounted high-voltage device is provided with a mounting area, the high-voltage bus filtering device of any one of claims 1 to 10 is mounted in the mounting area,

the outer side of the mounting area comprises a metal shell, and the copper-clad outer ring on the high-voltage bus filter device is connected with the metal shell.

12. The on-vehicle high-voltage device according to claim 11, characterized in that the metal housing opening is the same shape as the outer ring shape.

13. A vehicle to which the high-voltage bus bar filtering device of any one of claims 1 to 10 is applied or to which the on-board high-voltage device of claim 11 or 12 is applied.

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