CN212137543U - Front-end and rear-end filter module for electric vehicle motor controller - Google Patents
Front-end and rear-end filter module for electric vehicle motor controller Download PDFInfo
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- CN212137543U CN212137543U CN202021280165.6U CN202021280165U CN212137543U CN 212137543 U CN212137543 U CN 212137543U CN 202021280165 U CN202021280165 U CN 202021280165U CN 212137543 U CN212137543 U CN 212137543U
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- 239000003990 capacitor Substances 0.000 claims abstract description 113
- 238000001914 filtration Methods 0.000 claims abstract description 40
- 238000005476 soldering Methods 0.000 claims abstract description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 208000032365 Electromagnetic interference Diseases 0.000 description 68
- 238000010586 diagram Methods 0.000 description 6
- 239000004593 Epoxy Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a front-end and rear-end filter module for an electric automobile motor controller, which comprises a front-end EMI filtering module and a rear-end EMI filtering module, wherein the two filtering modules comprise a shell, a filtering capacitor, a positive electrode busbar, a negative electrode busbar and a grounding busbar; the filter capacitors of the front-end EMI filter module and the rear-end EMI filter module respectively comprise a differential mode filter capacitor and a common mode filter capacitor, the number of the filter capacitors of the front-end EMI filter module is different from that of the filter capacitors of the rear-end EMI filter module, hole sites are respectively arranged on the positive busbar, the negative busbar and the grounding busbar of the front-end EMI filter module and the rear-end EMI filter module, the differential mode filter capacitor is inserted in the hole sites of the corresponding positive busbar and negative busbar and fixed through tin soldering, and the common mode filter capacitor is inserted in the hole sites of the positive busbar or the negative busbar and the corresponding grounding busbar and fixed through tin soldering. The utility model discloses can restrain conducted interference and noise, EMI filtering effect is good, and the independent overall arrangement of system can be realized to front and back end filter circuit independent design.
Description
Technical Field
The utility model relates to an electric automobile is front end rear end filter module for machine controller.
Background
Electric automobile motor controller belongs to inverter system, and its core is the PWM drive circuit of inverter bridge and drive inverter bridge that comprises the IGBT, and PWM modulation has produced better sine wave, nevertheless can produce considerable impulse current because of the high-speed switch action of IGBT for the output has superimposed the higher harmonic, and these high harmonics produce serious interference at the output, and the electromagnetic interference problem seems especially outstanding, seriously influences the normal work of system on every side. Generally, the adopted method is to suppress the propagation of interference through an EMI filter, but the existing EMI filter design structure has poor suppression effect on conducted interference and noise, and poor EMI filtering effect, and cannot flexibly implement independent layout of a system, thereby limiting the application range to a certain extent.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a front end rear end filter module for electric automobile machine controller aims at solving among the prior art traditional EMI wave filter to the suppression effect of conducted interference and noise not good, EMI filtering effect is poor, and can't realize the independent overall arrangement of system, the technical problem that application range limits in a flexible way.
The technical scheme of the utility model is that: a front-end and rear-end filter module for an electric automobile motor controller comprises a front-end EMI (electro-magnetic interference) filter module and a rear-end EMI filter module, wherein the front-end EMI filter module and the rear-end EMI filter module respectively comprise a shell and a plurality of filter capacitors arranged in the shell, and further respectively comprise a positive busbar, a negative busbar and a grounding busbar which are connected with the internal filter capacitors through the shell; the filter capacitors of the front-end EMI filter module and the rear-end EMI filter module respectively comprise differential mode filter capacitors and common mode filter capacitors, the number of the filter capacitors of the front-end EMI filter module is different from that of the filter capacitors of the rear-end EMI filter module, the positive busbar, the negative busbar and the grounding busbar of the front-end EMI filter module and the rear-end EMI filter module are respectively provided with a hole site for inserting the corresponding filter capacitors, the differential mode filter capacitors are inserted in the hole sites of the corresponding positive busbar and the negative busbar and fixed through soldering, and the common mode filter capacitors are inserted in the hole sites of the positive busbar or the negative busbar and the corresponding grounding busbar and fixed through soldering.
Further, in the utility model discloses in the filter capacitance of front end EMI filter module includes differential mode filter capacitance Cx1, common mode filter capacitance Cy1A, common mode filter capacitance Cy1B, common mode filter capacitance Cy2A, common mode filter capacitance Cy2B, common mode filter capacitance Cy1A, Cy1B set up side by side in one side of differential mode filter capacitance Cx1, common mode filter capacitance Cy2A, Cy2B set up side by side in one side of common mode filter capacitance Cy1A, Cy 1B.
Further, in the utility model discloses in female the arranging of positive pole of front end EMI filtering module, negative pole are equipped with respectively on female the arranging and supply differential mode filter capacitance Cx1 and correspond common mode filter capacitance and insert the three hole site of establishing, and the ground connection of front end EMI filtering module is female to be equipped with respectively and supplies four common mode filter capacitance to insert four hole sites of establishing.
Further, the utility model discloses in the filter capacitance of rear end EMI filter module includes differential mode filter capacitance Cx2, common mode filter capacitance Cy3A, common mode filter capacitance Cy3B, common mode filter capacitance Cy3A, common mode filter capacitance Cy3B set up side by side in one side of differential mode filter capacitance Cx 2.
Further, in the utility model discloses in female arranging of positive pole of rear end EMI filtering module, female arranging of negative pole are equipped with respectively and supply differential mode filter capacitance Cx2 and correspond common mode filter capacitance and insert two hole sites of establishing, and the ground connection of rear end EMI filtering module is female to be equipped with respectively and supplies two common mode filter capacitance to insert two hole sites of establishing.
Further, in the utility model discloses in female arranging of positive pole and female arranging of negative pole are made by T2Y2 red copper, the shell is made by the PBT material.
Furthermore, in the present invention, the capacitance range of the differential mode filter capacitor Cx1 is 0.68 μ F to 1.2 μ F, the capacitance ranges of the common mode filter capacitor Cy1A and the common mode filter capacitor Cy1B are 22nF to 150nF, the capacitance ranges of the common mode filter capacitor Cy2A and the common mode filter capacitor Cy2B are 22nF to 100nF, the capacitance range of the differential mode filter capacitor Cx2 is 1 μ F to 3.5 μ F, and the capacitance ranges of the common mode filter capacitor Cy3A and the common mode filter capacitor Cy3B are 100nF to 470 nF.
Further, in the utility model discloses in the filter capacitance of front end EMI filtering module and rear end EMI filtering module all adopts nonpolarity dry-type film capacitor.
Further, in the utility model discloses in all the embedment has epoxy between the filter capacitance of front end EMI filtering module and rear end EMI filtering module and the shell.
Compared with the prior art, the utility model has the following advantage:
1) the utility model discloses a filter module adopts the multichannel parallelly connected, the independent type wave filter of multiple spot grounding type front end rear end, and multistage filter circuit design can better restrain the conduction interference that motor controller IGBT switch brought, suppresses other noises of electric automobile (like OBC) simultaneously, and EMI filtering effect is good.
2) The utility model discloses in, the equal lug welding of filter capacitance of front end EMI filtering module and rear end EMI filtering module adopts multiple spot ground connection simultaneously on positive negative pole is female arranges, can furthest reduce the length of earth connection, and control stray inductance ≦ 10nH realizes better EMI filtering effect.
3) The utility model discloses in, the independent design of front and back end filter circuit can realize the independent overall arrangement of system.
Drawings
Fig. 1 is a schematic diagram of a product structure of the front-end EMI filter module according to the present invention;
fig. 2 is a schematic diagram of an internal structure of the front-end EMI filter module according to the present invention;
fig. 3 is an exploded view of the front-end EMI filter module of the present invention (wherein the housing is not shown);
fig. 4 is a circuit diagram of the front-end EMI filter module according to the present invention;
fig. 5 is a schematic diagram of a product structure of the rear-end EMI filter module according to the present invention;
fig. 6 is a schematic diagram of an internal structure of the rear-end EMI filter module according to the present invention;
fig. 7 is an exploded view of the back-end EMI filter module of the present invention (wherein the housing is not shown);
fig. 8 is a circuit diagram of the rear-end EMI filter module according to the present invention.
Wherein: 1. a front-end EMI filtering module; 2. a back-end EMI filtering module; 3. a housing; 4. a positive busbar; 5. a negative busbar; 6. and a grounding busbar.
Detailed Description
The following description will specifically explain embodiments of the present invention with reference to the accompanying drawings.
Example (b):
combine the attached drawing to show the utility model relates to an electric automobile is concrete implementation of front end rear end filter module for machine controller, it mainly includes front end EMI filtering module 1 and rear end EMI filtering module 2, as shown in figure 1, figure 5, front end EMI filtering module 1 and rear end EMI filtering module 2 all include shell 3 and locate a plurality of filter capacitance in the shell 3, still all including wear to establish the positive pole that shell 3 and inside filter capacitance are connected female arranging 4, female row 5 of negative pole and the female row 6 of ground connection.
The filter capacitors of the front-end EMI filter module 1 and the rear-end EMI filter module 2 both comprise differential mode filter capacitors and common mode filter capacitors, and the number of the filter capacitors of the front-end EMI filter module 1 is different from the number of the filter capacitors of the rear-end EMI filter module 2.
The positive busbar 4, the negative busbar 5 and the grounding busbar 6 of the front-end EMI filtering module 1 and the rear-end EMI filtering module 2 are respectively provided with a hole site for inserting a corresponding filtering capacitor, a differential mode filtering capacitor is inserted in the hole sites of the corresponding positive busbar 4 and the negative busbar 5 and fixed through tin soldering, and a common mode filtering capacitor is inserted in the hole sites of the positive busbar 4 or the negative busbar 5 and the corresponding grounding busbar 6 and fixed through tin soldering.
Specifically, in the present embodiment, as shown in fig. 2 and 3, the front-end EMI filter module 1 has five filter capacitances, including a differential-mode filter capacitance Cx1, a common-mode filter capacitance Cy1A, a common-mode filter capacitance Cy1B, a common-mode filter capacitance Cy2A, and a common-mode filter capacitance Cy2B, the common-mode filter capacitances Cy1A and Cy1B are arranged side by side on the side of the differential-mode filter capacitance Cx1, and the common-mode filter capacitances Cy2A and Cy2B are arranged side by side on the sides of the common-mode filter capacitances Cy1A and Cy 1B.
Three hole sites for inserting a differential mode filter capacitor Cx1, a common mode filter capacitor Cy1A and a common mode filter capacitor Cy2A are arranged on the positive busbar 4 of the front-end EMI filter module 1; three hole sites for inserting a differential mode filter capacitor Cx1, a common mode filter capacitor Cy1B and a common mode filter capacitor Cy2B are arranged on a cathode bus bar 5 of the front-end EMI filter module 1; four hole sites for inserting the four common-mode filter capacitors are arranged on the grounding busbar 6 of the front-end EMI filter module 1.
As shown in fig. 6 and 7, the back-end EMI filter module 2 has three filter capacitors, including a differential filter capacitor Cx2, a common-mode filter capacitor Cy3A, and a common-mode filter capacitor Cy3B, where the common-mode filter capacitor Cy3A and the common-mode filter capacitor Cy3B are arranged side by side on one side of the differential filter capacitor Cx 2.
Two hole sites for inserting the differential mode filter capacitor Cx2 and the common mode filter capacitor Cy3A are arranged on the positive busbar 4 of the rear EMI filter module 2; two hole sites for inserting the differential mode filter capacitor Cx2 and the common mode filter capacitor Cy3B are arranged on the cathode bus bar 5 of the rear EMI filter module 2; two hole sites for two common mode filter capacitors to be inserted are arranged on the grounding busbar 6 of the rear EMI filter module 2.
Furthermore, in this embodiment, the capacitance range of the differential-mode filter capacitor Cx1 is 0.68 μ F to 1.2 μ F, the capacitance ranges of the common-mode filter capacitor Cy1A and the common-mode filter capacitor Cy1B are 22nF to 150nF, the capacitance ranges of the common-mode filter capacitor Cy2A and the common-mode filter capacitor Cy2B are 22nF to 100nF, the capacitance range of the differential-mode filter capacitor Cx2 is 1 μ F to 3.5 μ F, and the capacitance ranges of the common-mode filter capacitor Cy3A and the common-mode filter capacitor Cy3B are 100nF to 470 nF.
In this embodiment, the filter capacitors of the front-end EMI filter module 1 and the rear-end EMI filter module 2 both use non-polar dry film capacitors.
In this embodiment, the positive busbar 4 and the negative busbar 5 are both made of T2Y2 red copper, and the housing 3 is made of PBT material.
In this embodiment, epoxy resin is filled between the filter capacitors of the front-end EMI filter module 1 and the rear-end EMI filter module 2 and the housing 3.
The filter capacitor of the front-end EMI filter module 1 and the rear-end EMI filter module 2 of this embodiment is installed in the hole site that female row corresponds all adopting DIP plug-in components mode to adopt the tin soldering fixed, can reduce filter capacitor lead wire inductance to minimum, and in the welded semi-manufactured goods subassembly assembled shell 3, adopt epoxy embedment curing process to filter capacitor and solder joint position, can effectively prevent risk such as filter capacitor damp inefficacy, solder joint oxidation, vibration fracture in the use.
The utility model discloses a filter module adopts the multichannel parallelly connected, multiple spot ground connection type front end rear end stand alone type wave filter, multistage filter circuit design can better restrain the conduction interference that motor controller IGBT switch brought, restrain other noises of electric automobile simultaneously (like OBC), EMI filter effect is good, the equal lug weld of filter capacitance of front end EMI filter module 1 and rear end EMI filter module 2 is on positive negative pole mother board, adopt multiple spot ground connection simultaneously, can furthest reduce the length of earth connection, control stray inductance ≦ 10nH, realize better EMI filter effect, because front and back end filter circuit independent design, can realize the independent overall arrangement of system, it is more nimble to arrange.
The above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which should not be construed as limiting the scope of the present invention. All modifications made according to the spirit of the main technical scheme of the present invention shall be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides an electric automobile is front end rear end filter module for machine controller which characterized in that: the electromagnetic interference filter comprises a front-end EMI filter module (1) and a rear-end EMI filter module (2), wherein the front-end EMI filter module (1) and the rear-end EMI filter module (2) respectively comprise a shell (3) and a plurality of filter capacitors arranged in the shell (3), and further respectively comprise a positive busbar (4), a negative busbar (5) and a grounding busbar (6) which are arranged in the shell (3) in a penetrating way and connected with the internal filter capacitors; the filter capacitors of the front-end EMI filter module (1) and the rear-end EMI filter module (2) respectively comprise differential mode filter capacitors and common mode filter capacitors, the number of the filter capacitors of the front-end EMI filter module (1) is different from that of the filter capacitors of the rear-end EMI filter module (2), positive busbars (4) and negative busbars (5) of the front-end EMI filter module (1) and the rear-end EMI filter module (2) are respectively provided with hole sites for inserting the corresponding filter capacitors, the differential mode filter capacitors are inserted in the hole sites of the corresponding positive busbars (4) and negative busbars (5) and fixed through tin soldering, and the common mode filter capacitors are inserted in the hole sites of the positive busbars (4) or the negative busbars (5) and the corresponding ground busbars (6) and fixed through tin soldering.
2. The front-end and back-end filter module for the motor controller of the electric automobile according to claim 1, characterized in that: the filter capacitor of the front-end EMI filter module (1) comprises a differential mode filter capacitor Cx1, a common mode filter capacitor Cy1A, a common mode filter capacitor Cy1B, a common mode filter capacitor Cy2A and a common mode filter capacitor Cy2B, the common mode filter capacitors Cy1A and Cy1B are arranged on one side of the differential mode filter capacitor Cx1 in parallel, and the common mode filter capacitors Cy2A and Cy2B are arranged on one sides of the common mode filter capacitors Cy1A and Cy1B in parallel.
3. The front-end and back-end filter module for the motor controller of the electric automobile according to claim 2, characterized in that: the positive busbar (4) and the negative busbar (5) of the front-end EMI filtering module (1) are respectively provided with three hole sites for inserting the differential mode filtering capacitors Cx1 and the corresponding common mode filtering capacitors, and the grounding busbar (6) of the front-end EMI filtering module (1) is provided with four hole sites for inserting the four common mode filtering capacitors.
4. The front-end and back-end filter module for the motor controller of the electric automobile according to claim 1, characterized in that: the filter capacitor of the rear-end EMI filter module (2) comprises a differential mode filter capacitor Cx2, a common mode filter capacitor Cy3A and a common mode filter capacitor Cy3B, wherein the common mode filter capacitor Cy3A and the common mode filter capacitor Cy3B are arranged on one side of the differential mode filter capacitor Cx2 in parallel.
5. The front-end and back-end filter module for the motor controller of the electric automobile according to claim 4, characterized in that: the positive busbar (4) and the negative busbar (5) of the rear-end EMI filtering module (2) are respectively provided with two hole sites for inserting the differential mode filtering capacitor Cx2 and the corresponding common mode filtering capacitor, and the grounding busbar (6) of the rear-end EMI filtering module (2) is provided with two hole sites for inserting the two common mode filtering capacitors.
6. The front-end and back-end filter module for the motor controller of the electric automobile according to claim 1, characterized in that: the positive busbar (4) and the negative busbar (5) are both made of T2Y2 red copper, and the shell (3) is made of PBT material.
7. The front-end and back-end filter module for the motor controller of the electric automobile according to claim 1, characterized in that: the capacitance range of the differential mode filter capacitor Cx1 is 0.68 mu F-1.2 mu F, the capacitance ranges of the common mode filter capacitor Cy1A and the common mode filter capacitor Cy1B are 22 nF-150 nF, the capacitance ranges of the common mode filter capacitor Cy2A and the common mode filter capacitor Cy2B are 22 nF-100 nF, the capacitance range of the differential mode filter capacitor Cx2 is 1 mu F-3.5 mu F, and the capacitance ranges of the common mode filter capacitor Cy3A and the common mode filter capacitor Cy3B are 100 nF-470 nF.
8. The front-end and back-end filter module for the motor controller of the electric automobile according to claim 1, characterized in that: and the filter capacitors of the front-end EMI filter module (1) and the rear-end EMI filter module (2) are all nonpolar dry film capacitors.
9. The front-end and back-end filter module for the motor controller of the electric automobile according to claim 1, characterized in that: epoxy resin is filled and sealed between the filter capacitors of the front-end EMI filter module (1) and the rear-end EMI filter module (2) and the shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021280165.6U CN212137543U (en) | 2020-07-02 | 2020-07-02 | Front-end and rear-end filter module for electric vehicle motor controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021280165.6U CN212137543U (en) | 2020-07-02 | 2020-07-02 | Front-end and rear-end filter module for electric vehicle motor controller |
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| CN212137543U true CN212137543U (en) | 2020-12-11 |
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| CN202021280165.6U Active CN212137543U (en) | 2020-07-02 | 2020-07-02 | Front-end and rear-end filter module for electric vehicle motor controller |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580950A (en) * | 2021-06-18 | 2021-11-02 | 东风汽车集团股份有限公司 | Motor control system and vehicle |
| CN113824307A (en) * | 2021-09-23 | 2021-12-21 | 珠海格力电器股份有限公司 | Three-phase copper bar device and servo driver |
| CN114079406A (en) * | 2021-06-18 | 2022-02-22 | 东风汽车集团股份有限公司 | Motor controller assembly structure and equipment |
-
2020
- 2020-07-02 CN CN202021280165.6U patent/CN212137543U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580950A (en) * | 2021-06-18 | 2021-11-02 | 东风汽车集团股份有限公司 | Motor control system and vehicle |
| CN114079406A (en) * | 2021-06-18 | 2022-02-22 | 东风汽车集团股份有限公司 | Motor controller assembly structure and equipment |
| CN113580950B (en) * | 2021-06-18 | 2023-12-19 | 东风汽车集团股份有限公司 | Motor control system and vehicle |
| CN113824307A (en) * | 2021-09-23 | 2021-12-21 | 珠海格力电器股份有限公司 | Three-phase copper bar device and servo driver |
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Address after: 2801, Building 2, Chuangxiang Building, Overseas Chinese Town, Beizhan Community, Minzhi Street, Longhua District, Shenzhen, Guangdong 518000 Patentee after: SHENZHEN HOVERBIRD ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: No.902, Tsinghua information port, North Science Park, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN HOVERBIRD ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Address after: 2801, Building 2, Chuangxiang Building, Overseas Chinese Town, Beizhan Community, Minzhi Street, Longhua District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Huibeichuan Technology Co.,Ltd. Country or region after: China Address before: 2801, Building 2, Chuangxiang Building, Overseas Chinese Town, Beizhan Community, Minzhi Street, Longhua District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN HOVERBIRD ELECTRONIC TECHNOLOGY Co.,Ltd. Country or region before: China |