A filter module and a power domain control unit

Abstract

The utility model belongs to electric drive controller technical field, propose a kind of filter module and power domain control unit, wherein a kind of filter module includes shell, second capacitor, ferrite magnetic ring, first capacitor, nanocrystalline magnetic ring and third capacitor are sequentially inlaid with on the surface of shell from input to output, connection line is provided in the shell, second capacitor, first capacitor and third capacitor are all with connection line electricity is connected;The utility model's filter module includes shell, second capacitor, ferrite magnetic ring, first capacitor, nanocrystalline magnetic ring and third capacitor are sequentially inlaid with on the surface of shell from input to output, and then the module of integrated filter of small volume is realized, the volume of filter module is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electric drive controller technology, and specifically relates to a filter module and a power domain control unit. Background Technology

[0002] With the rapid development of new energy vehicles, the power domain controller, as a core component of vehicle control, directly affects the safety and stability of the vehicle. During operation, the power domain controller needs to handle high-voltage DC power from the battery pack. However, the voltage output from the battery pack fluctuates and is subject to interference, which can affect the normal operation of the power domain controller and even cause damage. Therefore, a filtering module needs to be installed at the input of the power domain controller to filter out interference signals from the high-voltage DC power.

[0003] Traditional automotive power domain control high-voltage input filter modules are usually built with discrete components, which have problems such as large size, high cost and poor heat dissipation efficiency.

[0004] Therefore, a small-sized filter module with effective heat dissipation is needed. Utility Model Content

[0005] To address the aforementioned problems, this utility model proposes a filtering module, including a housing. On the surface of the housing, from the input end to the output end, a second capacitor, a ferrite magnetic ring, a first capacitor, a nanocrystalline magnetic ring, and a third capacitor are sequentially embedded. A connecting line is provided in the housing, and the second capacitor, the first capacitor, and the third capacitor are all electrically connected to the connecting line.

[0006] Furthermore, it includes two third capacitors, which are fixedly installed on the upper and lower surfaces of the housing, respectively, and both third capacitors are electrically connected to the connecting lines.

[0007] Furthermore, a first magnetic ring mounting groove is provided on the outer surface of the housing, the first magnetic ring mounting groove being located between the two third capacitors; a nanocrystalline magnetic ring is installed in the first magnetic ring mounting groove, the nanocrystalline magnetic ring being fitted onto the outside of the connection line.

[0008] Furthermore, the outer surface of the housing is provided with a first capacitor mounting slot and a second capacitor mounting slot. The second capacitor mounting slot is installed near the input end of the housing, and the first capacitor mounting slot is installed on the side of the second capacitor mounting slot away from the input end of the housing.

[0009] Furthermore, it includes two first capacitor mounting slots, which are respectively disposed on the first surface and the second surface of the housing. Each of the two first capacitor mounting slots is equipped with a first capacitor, which is electrically connected to the connecting line.

[0010] Furthermore, it includes two second capacitor mounting slots, which are respectively disposed on the first surface and the second surface of the housing. A second capacitor is installed in each of the two second capacitor mounting slots, and the second capacitor is electrically connected to the connecting line.

[0011] Furthermore, the housing is provided with a second magnetic ring mounting groove, which is located between the first capacitor mounting groove and the second capacitor mounting groove. Two ferrite magnetic rings are symmetrically installed in the second magnetic ring mounting groove, with the two ferrite magnetic rings on both sides of the connecting line, respectively.

[0012] Furthermore, the connection line includes a first copper busbar and a second copper busbar, wherein the first copper busbar and the second copper busbar are integrally bent copper busbars.

[0013] Furthermore, the filtering module also includes a controller housing, which is mounted on the outside of the housing; cooling water channels are provided on the wall of the controller housing, and the cooling water channels are located below the housing.

[0014] Furthermore, a copper busbar is provided on the connection line, and the copper busbar contacts the inner surface of the controller housing through a thermal pad, and the copper busbar is located above the cooling water channel.

[0015] A power domain control unit includes a control board, a housing, and the aforementioned filter module. The control board and the filter module are both fixedly installed in the housing and are electrically connected.

[0016] The beneficial effects of this utility model are:

[0017] 1. The filter module of this utility model includes a housing. A second capacitor, a ferrite magnetic ring, a first capacitor, a nanocrystalline magnetic ring, and a third capacitor are sequentially embedded on the surface of the housing from the input end to the output end, thereby realizing a small-volume integrated filter module and reducing the size of the filter module.

[0018] 2. The filtering module of this utility model is a two-stage filter. The first-stage magnetic core is made of ferrite (ferrite magnetic ring), and the second-stage magnetic core is made of nanocrystal (nanocrystal magnetic ring). It is further composed of two first capacitors, two second capacitors, and two third capacitors to meet the basic requirements of filtering the input power signal and suppressing the interference of high-frequency harmonics on the motor windings.

[0019] 3. The filter module of this utility model rationally arranges the positions of nanocrystalline magnetic rings and ferrite magnetic rings with filter capacitors (first capacitor, second capacitor, and third capacitor). It adopts an integrated bent copper busbar (connecting circuit) and then an integral plastic coating (shell) to obtain a compact and lightweight product that meets the space requirements. Through a reasonable structural design, a feasible compact and lightweight solution is proposed for a filter that requires a 90° turn input of high voltage signals and the same number of filter capacitors in space. Under the limited space requirements, the arrangement of the basic components of the two-stage filter meets the overall interface and electrical function requirements.

[0020] 4. The filter module of this utility model has copper busbars in the connection line design. The copper busbars contact the cooling water channels for effective heat dissipation, thereby improving the service life of the product.

[0021] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A partial schematic diagram of the filtering module in an embodiment of this utility model is shown.

[0024] Figure 2 An exploded view of the filtering module in an embodiment of this utility model is shown.

[0025] Figure 3 It shows Figure 2 A schematic diagram of the local structure along direction A.

[0026] Figure 4 It shows Figure 2 A schematic diagram of the local structure along the B direction.

[0027] Figure 5 A cross-sectional schematic diagram of the filtering module in an embodiment of this utility model is shown.

[0028] Figure 6 It shows Figure 5 A schematic diagram of the local structure along the C-axis.

[0029] Figure 7The topology diagram of the filter in an embodiment of this utility model is shown.

[0030] In the diagram, 10 is the housing; 11 is the first magnetic ring mounting slot; 12 is the third capacitor mounting slot; 13 is the first capacitor mounting slot; 14 is the second capacitor mounting slot; 15 is the second magnetic ring mounting slot; 16 is the nut mounting insert; and 17 is the connecting copper plate.

[0031] 21. First capacitor; 22. Second capacitor; 23. Third capacitor;

[0032] 30. Connecting line; 31. First copper busbar; 32. Second copper busbar; 33. Copper busbar connector;

[0033] 41. Nanocrystalline magnetic ring; 42. Nanocrystalline magnetic ring cap;

[0034] 51. Ferrite magnetic ring; 52. Ferrite magnetic ring cap;

[0035] 60. Controller housing; 61. Cooling water channel; 62. Thermal pad. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] Example 1,

[0038] refer to Figure 1 A filtering module includes a housing 10. A second capacitor 22, a ferrite magnetic ring 51, a first capacitor 21, a nanocrystalline magnetic ring 41, and a third capacitor 23 are sequentially embedded on the surface of the housing 10 from the input end to the output end. A connection line 30 is provided in the housing 10. The second capacitor 22, the first capacitor 21, and the third capacitor 23 are all electrically connected to the connection line 30.

[0039] Specifically, the connecting line 30 includes a first copper busbar 31 and a second copper busbar 32. The first copper busbar 31 is the positive terminal and the second copper busbar 32 is the negative terminal. The first copper busbar 31 and the second copper busbar 32 are manufactured according to the installation positions of the second capacitor 22, the ferrite magnetic ring 51, the first capacitor 21, the third capacitor 23 and the nanocrystalline magnetic ring 41. At the same time, the housing 10 is designed and manufactured according to the layout positions of the second capacitor 22, the ferrite magnetic ring 51, the first capacitor 21, the third capacitor 23 and the nanocrystalline magnetic ring 41.

[0040] This product is a two-stage filter. The first-stage magnetic core uses ferrite (ferrite magnetic ring 51), and the second-stage magnetic core uses nanocrystal (nanocrystal magnetic ring 41). It is further composed of two first capacitors 21, two second capacitors 22, and two third capacitors 23 to meet the basic requirements of filtering the input power signal and suppressing the interference of high-frequency harmonics on the motor windings.

[0041] By proposing a feasible compact and lightweight solution for a filter that requires a 90° input of high-voltage signals and the same number of filter capacitors in a given space, a two-stage filter is designed with reasonable structural design. Under limited space requirements, the basic components of the filter are arranged to meet the overall interface and electrical function requirements. The positions of the nanocrystalline magnetic ring 41 and ferrite magnetic ring 51 and the filter capacitors (first capacitor 21, second capacitor 22 and third capacitor 23) are reasonably arranged. A compact and lightweight product that meets the space requirements is obtained by using an integrated bent copper busbar (connecting line 30) and then an integrated plastic coating (shell 10).

[0042] Furthermore, it includes two third capacitors 23, which are fixedly installed on the upper and lower surfaces of the housing 10, respectively, and both third capacitors 23 are electrically connected to the connecting line 30.

[0043] Specifically, the housing 10 is provided with two third capacitor mounting slots 12, which are respectively mounted on the upper and lower surfaces of the housing 10, and are located near the output end of the housing 10. Each of the two third capacitor mounting slots 12 contains a third capacitor 23, which is electrically connected to the connecting line 30 via a connecting copper plate 17. The third capacitor 23 on the lower surface of the housing 10 is electrically connected to the input end of the connecting line 30, and the third capacitor 23 on the upper surface of the housing 10 is also electrically connected to the connecting line 30. The connection points between the two third capacitors 23 and the connecting line 30 are at both ends of the nanocrystalline magnetic ring 41, meaning the current first passes through the upper third capacitor 23, then through the nanocrystalline magnetic ring 41, and finally through the lower third capacitor 23 (see reference). Figure 7 The third capacitor, 23, is a CX capacitor (i.e., the X capacitor of the safety capacitor).

[0044] refer to Figure 1 The outer surface of the housing 10 is provided with a first magnetic ring mounting groove 11, which is located between the two third capacitors 23; a nanocrystalline magnetic ring 41 is installed in the first magnetic ring mounting groove 11, and the nanocrystalline magnetic ring 41 is fitted on the outside of the connecting line 30.

[0045] Specifically, the filtering module also includes a nanocrystalline magnetic ring cover 42, which is installed in the first magnetic ring mounting groove 11 and located at the outer end of the nanocrystalline magnetic ring 41. A groove is provided in the middle of the nanocrystalline magnetic ring cover 42, and the output end of the connecting line 30 passes through the groove in the middle of the nanocrystalline magnetic ring cover 42. Specifically, the nanocrystalline magnetic ring cover 42 is used to limit the nanocrystalline magnetic ring 41 and ensure that the nanocrystalline magnetic ring 41 does not fall out of the first magnetic ring mounting groove 11.

[0046] refer to Figure 2 The outer surface of the housing 10 is provided with a first capacitor mounting slot 13 and a second capacitor mounting slot 14. The second capacitor mounting slot 14 is located near the input end of the housing 10, and the first capacitor mounting slot 13 is installed on the side of the second capacitor mounting slot 14 away from the input end of the housing 10. Specifically, the first capacitor mounting slot 13 and the second capacitor mounting slot 14 are used to mount the first capacitor 21 and the second capacitor 22, respectively.

[0047] Furthermore, it includes two first capacitor mounting slots 13, which are respectively mounted on the first and second surfaces of the housing 10. Each of the two first capacitor mounting slots 13 houses a first capacitor 21, which is electrically connected to the connecting line 30. Specifically, refer to... Figure 1 The first surface of the housing 10 is the front surface, and the second surface of the housing 10 is the rear surface; the two first capacitors 21 are symmetrical about the connecting line 30, and one end of the two first capacitors 21 is electrically connected to the first copper busbar 31 and the second copper busbar 32 respectively through the connecting copper sheet 17, and the other end of the two first capacitors 21 is connected to the ground wire.

[0048] Furthermore, it includes two second capacitor mounting slots 14, which are respectively mounted on the first and second surfaces of the housing 10. Each of the two second capacitor mounting slots 14 houses a second capacitor 22, which is electrically connected to the connecting line 30. Specifically, refer to... Figure 1 The first surface of the housing 10 is the front surface, and the second surface of the housing 10 is the rear surface. The two second capacitors 22 are symmetrical about the connecting line 30, and one end of each second capacitor 22 is electrically connected to the first copper busbar 31 and the second copper busbar 32 respectively through the connecting copper sheet 17. The other end of each second capacitor 22 is connected to the ground wire. The first capacitor 21 and the second capacitor 22 are both CY capacitors (i.e., Y capacitors of safety capacitors).

[0049] refer to Figure 1The housing 10 is provided with a second magnetic ring mounting groove 15, which is located between the first capacitor mounting groove 13 and the second capacitor mounting groove 14. Two ferrite magnetic rings 51 are symmetrically mounted in the second magnetic ring mounting groove 15, with the two ferrite magnetic rings 51 on both sides of the connecting line 30. Specifically, the connecting line 30 is installed in the housing 10 and passes through the second magnetic ring mounting groove 15 and the first magnetic ring mounting groove 11.

[0050] refer to Figure 5 The filtering module also includes a controller housing 60, which is mounted on the outside of the housing 10. Cooling channels 61 are provided on the wall of the controller housing 60, located below the housing 10. Copper busbars 33 are designed on both sides of the input end of the connection line 30. The copper busbars 33 contact the controller housing 60 near the cooling channels 61 via thermal pads 62, thereby achieving effective heat dissipation.

[0051] refer to Figure 3 A copper busbar 33 is provided on the connecting line 30. The copper busbar 33 contacts the inner surface of the controller housing 60 through a thermal pad 62, and the copper busbar 33 is located above the cooling water channel 61. Figure 5 As shown, copper busbar connectors 33 are designed on both sides of the input end of the connection line 30. The copper busbar connectors 33 contact the controller housing 60 near the cooling water channel 61 through the thermal pad 62, thereby achieving effective heat dissipation. To improve the product's service life, copper busbar connectors 33 are designed on both sides of the first copper busbar 31 and the second copper busbar 32. The copper busbar connectors 33 contact the cooling water channel 61 for effective heat dissipation.

[0052] Existing technologies often employ discrete splicing methods for filters that require a 90° input redirection of high-voltage signals within the controller space and accommodate the same number of filter capacitors. This increases weight and volume, and the use of segmented copper busbar welding or copper busbar screw fixing processes raises costs. However, this invention integrates the first copper busbar 31 and the second copper busbar 32 into a single bent copper busbar. The copper busbars (first copper busbar 31 and second copper busbar 32) are also designed with copper busbar connectors 33 to facilitate overall heat dissipation. The first-stage magnetic core uses a ferrite magnetic ring 51 arranged along the X-axis near the high-voltage output side, while the second-stage magnetic core uses a nanocrystalline magnetic ring 41 arranged along the Y-axis near the high-voltage input side. This redirects the high-voltage input signal from the X-axis to the Y-axis and inputs it into the controller's interior. Two first capacitors 21 and two second capacitors 22 are arranged symmetrically relative to the ferrite magnetic ring 51 along the X-axis. Two third capacitors 23 are arranged along the Z-axis at the upper and lower ends of the nanocrystalline magnetic ring 41. Specifically, the connecting copper sheet 17 is connected in parallel to the lower side of the first copper busbar 31 and the second copper busbar 32 to enable the bottom third capacitor 23 to be powered independently (see reference). Figure 4This reduces costs and installation space. The filter adopts an integral plastic-coated form (housing 10), which makes the filter compact and lightweight.

[0053] This invention proposes a novel filter module structure for an automotive controller. It employs a combination of a nanocrystalline magnetic ring 41 and a ferrite magnetic ring 51 as two-stage magnetic core components. By rationally arranging the capacitor components and designing an integrated bent copper busbar (connecting line 30), a compact and lightweight product is achieved while meeting certain space requirements. Specifically, copper busbar contacts 33 are designed on both sides of the input ends of the first copper busbar 31 and the second copper busbar 32 of the filter. These contacts, via thermal pads 62, contact the cooling water channels 61 of the controller housing 60 for effective heat dissipation (see reference). Figure 6 ).

[0054] A nut mounting insert 16 is provided on the housing 10. The nut mounting insert 16 is used to install nuts to facilitate the fixation of the filter module. The housing 10 is provided with a third capacitor mounting slot 12, a first magnetic ring mounting slot 11, a first capacitor mounting slot 13, a second magnetic ring mounting slot 15, and a second capacitor mounting slot 14 in sequence. These are used to install a third capacitor 23, a nanocrystalline magnetic ring 41, a first capacitor 21, a ferrite magnetic ring 51, and a second capacitor 22. Ferrite magnetic ring covers 52 are installed at the upper and lower ports of the second magnetic ring mounting slot 15. The ferrite magnetic ring covers 52 are used to limit the ferrite magnetic ring 51 and prevent the ferrite magnetic ring 51 from falling out.

[0055] Example 2,

[0056] A power domain control unit includes a control board, a housing, and a filter module as described in Embodiment 1. Both the control board and the filter module are fixedly installed in the housing and are electrically connected.

[0057] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A filtering module, characterized in that, The device includes a housing (10), on which a second capacitor (22), a ferrite magnetic ring (51), a first capacitor (21), a nanocrystalline magnetic ring (41) and a third capacitor (23) are sequentially embedded from the input end to the output end on the surface of the housing (10). A connecting line (30) is provided in the housing (10), and the second capacitor (22), the first capacitor (21) and the third capacitor (23) are all electrically connected to the connecting line (30).

2. The filtering module according to claim 1, characterized in that, It includes two third capacitors (23), which are fixedly installed on the upper and lower surfaces of the housing (10) respectively, and both third capacitors (23) are electrically connected to the connecting line (30).

3. A filtering module according to claim 2, characterized in that, The outer surface of the housing (10) is provided with a first magnetic ring mounting groove (11), which is located between two third capacitors (23); a nanocrystalline magnetic ring (41) is installed in the first magnetic ring mounting groove (11), and the nanocrystalline magnetic ring (41) is fitted on the outside of the connecting line (30).

4. A filtering module according to claim 1, characterized in that, The outer surface of the housing (10) is provided with a first capacitor mounting groove (13) and a second capacitor mounting groove (14). The second capacitor mounting groove (14) is installed on the housing (10) near the input end, and the first capacitor mounting groove (13) is installed on the side of the second capacitor mounting groove (14) away from the input end of the housing (10).

5. A filtering module according to claim 4, characterized in that, It includes two first capacitor mounting slots (13), which are respectively disposed on the first surface and the second surface of the housing (10). A first capacitor (21) is installed in each of the two first capacitor mounting slots (13), and the first capacitor (21) is electrically connected to the connecting line (30).

6. A filtering module according to claim 4, characterized in that, It includes two second capacitor mounting slots (14), which are respectively disposed on the first and second surfaces of the housing (10). A second capacitor (22) is installed in each of the two second capacitor mounting slots (14), and the second capacitor (22) is electrically connected to the connecting line (30).

7. A filtering module according to claim 4, characterized in that, The housing (10) is provided with a second magnetic ring mounting groove (15), which is located between the first capacitor mounting groove (13) and the second capacitor mounting groove (14). Two ferrite magnetic rings (51) are symmetrically installed in the second magnetic ring mounting groove (15), and the two ferrite magnetic rings (51) are respectively on both sides of the connecting line (30).

8. A filtering module according to claim 4, characterized in that, The connecting line (30) includes a first copper busbar (31) and a second copper busbar (32), wherein the first copper busbar (31) and the second copper busbar (32) are integrally bent copper busbars.

9. A filtering module according to any one of claims 1-8, characterized in that, The filtering module also includes a controller housing (60), which is installed on the outside of the housing (10); a cooling water channel (61) is provided on the wall of the controller housing (60), which is located below the housing (10).

10. A filtering module according to claim 9, characterized in that, A copper busbar (33) is provided on the connection line (30). The copper busbar (33) contacts the inner surface of the controller housing (60) through the heat-conducting pad (62), and the copper busbar (33) is located above the cooling water channel (61).

11. A power domain control unit, characterized in that, The device includes a control board, a housing, and a filtering module as described in any one of claims 1-10, wherein the control board and the filtering module are both fixedly installed in the housing, and the control board and the filtering module are electrically connected.

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