CN211531073U

CN211531073U - High-current automobile filter

Info

Publication number: CN211531073U
Application number: CN201921212440.8U
Authority: CN
Inventors: 王刚; 冀明华; 李爱青; 邓冬冬
Original assignee: Green Century Technology Co ltd
Current assignee: Beijing Electromagnetic Measurement Technology Co.,Ltd.
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-09-18
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a heavy current car filter, which comprises a housin, be provided with X electric capacity, Y electric capacity and a plurality of magnetic ring in the casing, it is a plurality of the outside of same copper bar subassembly is located to the equal cover of magnetic ring, the copper bar subassembly includes that at least two all run through the input/output copper bar of casing, X electric capacity with Y electric capacity respectively passes through pin connection the input/output copper bar, adjacent two be provided with insulating spacer block between the input/output copper bar, insulating spacer block is located the outside of casing, set up a plurality of through-holes that supply locking screw to pass on the input/output copper bar, set firmly on the insulating spacer block a plurality of respectively with the lock nut of through-hole one-to-one. The utility model has the advantages that: the size and the weight of the automobile filter are effectively reduced, and the space and the cost are saved; the relatively excellent EMC performance can be realized in a limited space; the termination mode is optimized, the connection is convenient, and the electric performance is safe.

Description

High-current automobile filter

Technical Field

The utility model relates to a technical field of wave filter particularly, relates to a heavy current car wave filter.

Background

When the electric automobile is rapidly developed, important automobile parts such as a driver, a battery pack, an air conditioner and the like need to be subjected to EMC processing, and an effective way is to install a filter. Since the internal space of these components is designed to be compact, the space available for the filter is extremely limited, and the current of the bus is relatively large (typically greater than 100A), it is difficult for the conventional filter to meet the requirements of both installation and performance.

The conventional filter (as shown in fig. 1) has a large volume, and the space between the input and output copper bars needs to be enough to effectively connect with the external copper bar.

When used in automotive parts, conventional filters have the following disadvantages:

1) the size is large, the size of the high-current filter is large, and the high-current filter cannot meet the requirements of small internal size and light weight of the electric automobile.

2) The installation is inconvenient, and according to the connected mode (as shown in figure 2) of conventional wave filter, locking screw, lock nut occupation space are too big, connect inconvenient, have safety problems such as electric clearance inadequately simultaneously.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned technical problem among the correlation technique, the utility model provides a heavy current car wave filter has solved the problem that electric automobile inner space is little and need EMC filtering, has solved the inconvenient problem of wave filter input/output end connection.

In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a heavy current automobile filter, includes the casing, be provided with X electric capacity, Y electric capacity and a plurality of magnetic ring in the casing, it is a plurality of the outside of same copper bar subassembly is all located to the magnetic ring cover, the copper bar subassembly includes at least two and all runs through the input and output copper bar of casing, X electric capacity with Y electric capacity respectively through pin connection the input and output copper bar, adjacent two be provided with insulating spacer block between the input and output copper bar, insulating spacer block is located the outside of casing, set up a plurality of through-holes that supply the locking screw to pass on the input and output copper bar, set firmly on the insulating spacer block a plurality of respectively with the lock nut of through-hole one-to-one.

Further, the cross-sectional shape of the magnetic ring is oblong.

Furthermore, a first space capable of accommodating the X capacitor and the Y capacitor is formed between one side of the magnetic ring and the corresponding wall surface in the shell.

Furthermore, a second space is arranged between the other side of the magnetic ring and the corresponding wall surface in the shell, and the second space is smaller than the first space.

Furthermore, the input and output copper bar is connected with the external terminal through the locking screw.

Further, the number of the magnetic rings is two.

Further, the number of the through holes is two.

Further, the number of the locking nuts is two.

The utility model has the advantages that: the size and the weight of the automobile filter are effectively reduced, and the space and the cost are saved; the relatively excellent EMC performance can be realized in a limited space; the termination mode is optimized, the connection is convenient, and the electric performance is safe.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a conventional filter according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a conventional filter according to an embodiment of the present invention when connected;

fig. 3 is a front view of a high current automotive filter according to an embodiment of the present invention;

fig. 4 is a side view of a high current automotive filter according to an embodiment of the present invention;

fig. 5 is a schematic view of a common mode choke according to an embodiment of the present invention;

fig. 6 is a side view of a common mode choke according to an embodiment of the present invention;

fig. 7 is a schematic view of an insulating spacer according to an embodiment of the present invention;

fig. 8 is a schematic view of the insulating spacer block according to the embodiment of the present invention after being connected to the input/output copper bar.

In the figure:

1. a housing; 2. an X capacitor; 3. a Y capacitor; 4. a magnetic ring; 5. an input/output copper bar; 6. an insulating spacer block; 7. locking the screw; 8. locking the nut; 9. and an external terminal.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

As shown in fig. 3-8, according to the embodiment of the utility model provides a large current automobile filter, including casing 1, be provided with X electric capacity 2, Y electric capacity 3 and a plurality of magnetic ring 4 in the casing 1, it is a plurality of the outside of same copper bar subassembly is located all to the cover of magnetic ring 4, the copper bar subassembly includes that at least two all run through casing 1's input/output copper bar 5, X electric capacity 2 with Y electric capacity 3 respectively passes through pin connection input/output copper bar 5, adjacent two be provided with insulating spacer 6 between the input/output copper bar 5, insulating spacer 6 is located casing 1's outside, set up a plurality of through-holes that supply locking screw 7 to pass on the input/output copper bar 5, insulating spacer 6 last set firmly a plurality of respectively with the locking nut 8 of through-hole one-to-one.

Further, the cross-sectional shape of the magnetic ring 4 is oblong.

Furthermore, a first space capable of accommodating the X capacitor 2 and the Y capacitor 3 is formed between one side of the magnetic ring 4 and a corresponding wall surface in the housing 1.

Furthermore, a second space is formed between the other side of the magnetic ring 4 and the corresponding wall surface in the shell 1, and the second space is smaller than the first space.

Further, the input/output copper bar 5 is connected with the external terminal 9 through the locking screw 7.

Further, the number of the magnetic rings 4 is two.

Further, the number of the through holes is two.

Further, the number of the lock nuts 8 is two.

For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention will be described in detail through specific use modes.

Heavy current car wave filter include casing 1, X electric capacity 2, Y electric capacity 3, magnetic ring 4, input/output copper bar 5, insulating spacer 6. The insulating spacer 6 is embedded with a locking nut 8, and the input and output copper bar 5 is connected with an external terminal 9 through a locking screw 7 and the locking nut 8.

The magnetic ring 4 is in a customized runway shape (namely, the cross section is in an oblong shape), the interior of the shell 1 is in an asymmetric design, the space is utilized to the maximum extent, and the part of the input and output copper bar 5 extending out of the shell 1 adopts the insulating spacer 6 and the locking nut 8, so that the problem that the external terminal 9 is inconvenient to connect is solved.

The magnetic ring 4 is a runway-shaped magnetic ring and can be tightly attached to the input and output copper bars 5, so that the internal space is utilized to the maximum extent.

Two input/output copper bars 5 and two magnetic rings 4 constitute a common mode choke jointly, the common mode choke is confirmed the back as the major structure of wave filter, need arrange X electric capacity and Y electric capacity on the next door, 1 inside asymmetric design that adopts of casing, the common mode choke is pressed close to a lateral wall face in the casing 1 and is placed and form the second space, another lateral wall face in the casing 1 constitutes first space with the common mode choke, first space is used for putting the great X electric capacity 2 of volume, Y electric capacity 3, other little volume electric capacities are inserted empty and are put.

Be provided with insulating spacer block 6 between the part that two input/output copper bars 5 stretched out casing 1, insulating spacer block 6 is embedded to have lock nut 8, and lock nut 8 has both solved the connection problem as the nut that external terminal 9 and input/output copper bar 5 are connected through insulating spacer block 6 and lock nut 8, has also solved the not enough problem in electric clearance, supports for unsettled input/output copper bar 5 simultaneously, kills three birds with one stone.

During the specific installation: 1) the magnetic ring 4 is sleeved on the input and output copper bar 5 and is placed in the shell 1 of the filter;

2) welding lead wires on pins of the X capacitor and the Y capacitor;

3) placing an X capacitor and a Y capacitor in a shell 1 according to designed positions, and connecting lead wires with an input-output copper bar 5;

4) two sides of the outer part of the shell 1 are provided with insulating spacer blocks 6, and the insulating spacer blocks 6 are positioned between the two input and output copper bars 5;

5) and (6) encapsulating and sealing.

When in specific use: 1) assembling a high-current automobile filter at a preset position of an electric automobile;

2) connecting and installing fixing hole sites;

3) the input and output copper bars 5 are respectively attached to the external terminals 9 and fixed by the locking screws 7.

In summary, with the above technical solution of the present invention, the space is saved by the runway-shaped magnetic ring 4 according to the size design of the input/output copper bar 5; the interior of the shell 1 is asymmetrically designed, so that enough space is reserved for an X capacitor and a Y capacitor; through insulating spacer 6 and lock nut 8 between the input/output copper bar 5, both solved the connection problem, also solved the not enough problem in electric clearance, support for unsettled input/output copper bar 5 simultaneously, kill three birds with one stone.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-current automobile filter comprises a shell (1), wherein an X capacitor (2), a Y capacitor (3) and a plurality of magnetic rings (4) are arranged in the shell (1), the plurality of magnetic rings (4) are all sleeved outside the same copper bar assembly, the copper bar component comprises at least two input and output copper bars (5) which penetrate through the shell (1), the X capacitor (2) and the Y capacitor (3) are respectively connected with the input and output copper bar (5) through lead wires, it is characterized in that an insulating spacer block (6) is arranged between two adjacent input and output copper bars (5), the insulation spacer block (6) is positioned outside the shell (1), the input and output copper bar (5) is provided with a plurality of through holes for the locking screws (7) to pass through, and a plurality of locking nuts (8) which are respectively in one-to-one correspondence with the through holes are fixedly arranged on the insulating spacer block (6).

2. A high current automobile filter according to claim 1, wherein the cross-sectional shape of the magnetic ring (4) is oblong.

3. A high current automobile filter according to claim 2, wherein a first space capable of accommodating the X capacitor (2) and the Y capacitor (3) is provided between one side of the magnetic ring (4) and the corresponding wall surface in the housing (1).

4. A high current automobile filter according to claim 3, wherein a second space is provided between the other side of the magnetic ring (4) and the corresponding wall surface in the housing (1), and the second space is smaller than the first space.

5. A high-current automobile filter according to claim 1, wherein the input-output copper bar (5) is connected with an external terminal (9) through the locking screw (7).

6. A high current automobile filter according to claim 1, wherein the number of the magnetic rings (4) is two.

7. The high current automotive filter of claim 1, wherein the number of vias is two.

8. A high current automotive filter according to claim 7, characterised in that the number of said lock nuts (8) is two.