CN220934982U - Motor EMC filter, motor and car - Google Patents
Motor EMC filter, motor and car Download PDFInfo
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- CN220934982U CN220934982U CN202323035741.7U CN202323035741U CN220934982U CN 220934982 U CN220934982 U CN 220934982U CN 202323035741 U CN202323035741 U CN 202323035741U CN 220934982 U CN220934982 U CN 220934982U
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- 238000009434 installation Methods 0.000 claims abstract description 37
- 239000003990 capacitor Substances 0.000 claims abstract description 34
- 239000011324 bead Substances 0.000 claims abstract description 6
- 238000010586 diagram Methods 0.000 description 11
- 238000001914 filtration Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 230000001052 transient effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000010615 ring circuit Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Abstract
The utility model discloses a motor EMC filter, a motor and an automobile, wherein the motor EMC filter comprises an annular circuit board, a first device and a second device, the edge of an inner hole of the annular circuit board is provided with a grounding part, the annular circuit board is provided with a first area and two second areas, the first area is provided with two input ends and at least two first installation positions, each first installation position is parallel between the two input ends, and the two input ends are in one-to-one correspondence with the two second areas; each second area is provided with an output end, a second installation position and an expansion installation position, the expansion installation position of each second area is arranged between the grounding part and the corresponding input end, and the second installation position is arranged between the output end and the corresponding input end. The first device is a TVS diode or a patch capacitor, and at least one first mounting position is provided with the first device. The second devices are patch magnetic beads or patch differential mode inductors, and each second installation position is provided with one second device. The technical scheme of the utility model can promote the expandability of the EMC filter of the motor.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a motor EMC filter, a motor and an automobile.
Background
As an essential element for generating a driving torque, a motor is used for converting or transmitting electric energy according to electromagnetic induction, and in an actual electric mechanism, the electromagnetic induction between various running electric devices is related to each other and mutually influenced, and a certain interference is generated to the running devices to a certain extent. At present, electromagnetic interference can be well restrained by arranging an EMC filter (Electro Magnetic Compatibility and electromagnetic compatibility) on the motor, but under the conditions of considering cost and electromagnetic interference restraining effect, the common EMC filter is designed corresponding to the motor or a use scene, and the circuit composition is fixed and the expandability is poor.
Disclosure of utility model
The utility model mainly aims to provide a motor EMC filter, which aims to improve the expandability of the motor EMC filter.
In order to achieve the above object, the present utility model provides a motor EMC filter, comprising:
The annular circuit board is provided with a grounding part at the edge of an inner hole of the annular circuit board, a first area and two second areas are arranged on the annular circuit board, the first area is positioned between the two second areas, the first area is provided with two input ends and at least two first mounting positions, each first mounting position is arranged between the two input ends in parallel, and the two input ends correspond to the two second areas one by one; each second area is provided with an output end, a second installation position and an expansion installation position, the expansion installation position in each second area is arranged between the grounding part and the corresponding input end, and the second installation position is arranged between the output end and the corresponding input end;
The first device is one of a TVS diode and a patch capacitor, at least one first mounting position is provided with the first device, and the first device is connected between two input ends; and
And the second device is one of a patch magnetic bead and a patch differential mode inductor, each second installation position is provided with one second device, and the second devices are connected between the input end and the output end.
Optionally, at least one of the first mounting locations is provided with the first device, and the first device is a TVS diode.
Optionally, one of the first mounting positions is provided with a first device, the other first mounting positions are empty, the first device is a TVS diode, the motor EMC filter further includes at least two first capacitors, at least one of the extended mounting positions in each of the second areas is provided with a first capacitor, and the first capacitors are connected between the grounding portion and the corresponding input end.
Optionally, one of the first mounting positions is provided with a first device, the other first mounting positions are empty, the first device is a patch capacitor, the motor EMC filter further includes at least two first capacitors, at least one of the second areas is provided with the first capacitor, and the first capacitors are connected between the grounding portion and the corresponding input end.
Optionally, the first area is provided with two first mounting positions, each first mounting position is provided with one first device, one first device is a TVS diode, and the other first device is a patch capacitor.
Optionally, the motor EMC filter further includes at least two first capacitors, each of the second areas is provided with at least one of the extended mounting locations, and the first capacitors are connected between the grounding portion and the corresponding input terminal.
Optionally, the grounding part is annular and extends along the edge of the inner hole of the annular circuit board.
Optionally, the extended mounting position is disposed between the second mounting position and the corresponding input end, and the second device in the second mounting position is connected with the corresponding input end through a bonding pad of the extended mounting position.
The utility model also provides a motor, which comprises a motor main body and the motor EMC filter, wherein the motor EMC filter is a ring-shaped circuit board.
The utility model also provides an automobile comprising the motor.
According to the technical scheme, the grounding part is arranged at the edge of an inner hole of the annular circuit board, two second areas and a first area positioned between the two second areas are arranged on the annular circuit board, the first area is provided with two input ends and at least two first mounting positions, each first mounting position is arranged between the two input ends in parallel, and the two input ends correspond to the two second areas one by one; each second area is provided with an output end, a second installation position and an expansion installation position, the expansion installation position in each second area is arranged between the grounding part and the corresponding input end, and the second installation position is arranged between the output end and the corresponding input end. Through predetermining paster magnetic bead or paster differential mode inductance at the second installation position, predetermine TVS diode or paster electric capacity at a first installation position to form basic filter circuit, can carry out differential mode filtering when motor electromagnetic noise is weak, simplify motor EMC filter's structure when realizing the filtering, reduction in production cost. Due to the arrangement of the plurality of first installation positions and the expansion installation positions in the two second areas, the expandability of the motor EMC filter is improved, the filter device can be conveniently installed in the first installation positions and the expansion installation positions according to actual filter needs, the filter capacity of the motor EMC filter is improved under the condition that the circuit board is not replaced, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of an EMC filter of the present utility model;
FIG. 2 is a circuit diagram of the EMC filter of the motor of FIG. 1;
FIG. 3 is a schematic diagram of the structure of the annular circuit board in FIG. 1;
fig. 4 is a schematic structural diagram of another embodiment of the EMC filter of the motor of the utility model;
FIG. 5 is a circuit diagram of the EMC filter of FIG. 4;
Fig. 6 is a schematic structural diagram of a motor EMC filter according to another embodiment of the utility model;
FIG. 7 is a circuit diagram of the motor EMC filter of FIG. 6;
FIG. 8 is a schematic diagram of a motor EMC filter according to another embodiment of the utility model;
FIG. 9 is a circuit diagram of the motor EMC filter of FIG. 8;
Fig. 10 is a schematic structural diagram of a motor EMC filter according to yet another embodiment of the utility model;
fig. 11 is a circuit diagram of the motor EMC filter of fig. 10.
Reference numerals illustrate:
10. an annular circuit board; 11. an input end; 12. an output end; 13. a first mounting location; 14. a second mounting location; 15. expanding the installation position; 16. a grounding part; 21. a first device; 22. a second device; 23. a first capacitor.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The utility model provides a motor EMC filter.
In the embodiment of the present utility model, please refer to fig. 1 to 3, the motor EMC filter includes an annular circuit board 10, a first device 21 and a second device 22, a grounding portion 16 is disposed at an edge of an inner hole of the annular circuit board 10, the annular circuit board 10 has a first area and two second areas, the first area is located between the two second areas, the first area is provided with two input ends 11 and at least two first mounting positions 13, each first mounting position 13 is disposed between the two input ends 11 in parallel, and the two input ends 11 are in one-to-one correspondence with the two second areas; each second area is provided with an output end 12, a second mounting position 14 and an expansion mounting position 15, the expansion mounting position 15 in each second area is arranged between the grounding part 16 and the corresponding input end 11, and the second mounting position 14 is arranged between the output end 12 and the corresponding input end 11.
The first device 21 is one of a TVS diode TVS1 and a chip capacitor CX1, and at least one first mounting location 13 is provided with the first device 21, the first device 21 being connected between the two input terminals 11. The second devices 22 are one of a chip bead and a chip differential mode inductor, and each second mounting location 14 is provided with one second device 22, and the second devices 22 are connected between the input end 11 and the output end 12.
Specifically, the first mounting position 13, the second mounting position 14 and the extension mounting position 15 are respectively provided with two mutually spaced bonding pads, one bonding pad of the first mounting position 13 is connected with one of the input ends 11, the other bonding pad of the first mounting position 13 is connected with the other input end 11, and when the first mounting position 13 is provided with the first device 21, namely, pins at two ends of the first device 21 are connected with the two bonding pads of the first mounting position 13 in a one-to-one correspondence manner. One of the bonding pads of the second mounting location 14 is connected with the corresponding input end 11 (i.e., the input end 11 adjacent to the second area where the second mounting location 14 is located), the other bonding pad of the second mounting location 14 is connected with the corresponding output end 12 (i.e., the output end 12 in the second area where the second mounting location 14 is located), and when the second mounting location 14 is provided with the second device 22, i.e., pins at two ends of the second device 22 are connected with two bonding pads of the second mounting location 14 in a one-to-one correspondence. One of the pads of the extension mount 15 is connected to the corresponding input terminal 11, and the other pad of the extension mount 15 is connected to the ground 16. Alternatively, the grounding portion 16 is grounded by being connected to the motor housing when the motor EMC filter is mounted to the motor.
According to the technical scheme, the grounding part 16 is arranged at the edge of an inner hole of the annular circuit board 10, two second areas and a first area positioned between the two second areas are arranged on the annular circuit board 10, the first area is provided with two input ends 11 and at least two first mounting positions 13, each first mounting position 13 is arranged between the two input ends 11 in parallel, and the two input ends 11 are in one-to-one correspondence with the two second areas; each second area is provided with an output end 12, a second mounting position 14 and an expansion mounting position 15, the expansion mounting position 15 in each second area is arranged between the grounding part 16 and the corresponding input end 11, and the second mounting position 14 is arranged between the output end 12 and the corresponding input end 11. Through predetermining paster magnetic bead or paster differential mode inductance at second installation position 14, predetermine TVS diode TVS1 or paster electric capacity CX1 at a first installation position 13 to form basic filter circuit, can carry out differential mode filtering when motor electromagnetic noise is weak, simplify motor EMC filter's structure when realizing the filtering, reduction in production cost. Due to the arrangement of the plurality of first installation positions 13 and the expansion installation positions 15 in the two second areas, the expandability of the motor EMC filter is improved, and the expansion installation of the filter device at the first installation positions 13 and the expansion installation positions 15 according to actual filter needs can be facilitated, so that the filtering capability of the motor EMC filter is improved under the condition that a circuit board is not replaced, and the cost is reduced.
In some embodiments, at least one first mounting location 13 is provided with a first device 21, and the first device 21 is a TVS diode TVS1. By setting the TVS diode TVS1 at the first mounting position 13, under the condition of realizing differential mode filtering, the interference of transient voltage and current can be improved, that is, when the electromagnetic noise of the motor is weak and the interference of transient voltage and current exists, the TVS diode TVS1 can be set at one of the first mounting positions 13, so as to further improve the filtering effect.
In other embodiments, please refer to fig. 4 and 5, wherein one first mounting location 13 is provided with a first device 21, the rest of the first mounting locations 13 are empty (i.e. only one first mounting location 13 is provided with the first device 21, the rest of the first mounting locations 13 are not provided with any device), the first device 21 is a TVS diode TVS1, the motor EMC filter further comprises at least two first capacitors 23 (CY 1, CY 2), at least one extended mounting location 15 in each second area is provided with a first capacitor 23 (CY 1, CY 2), and the first capacitors 23 (CY 1, CY 2) are connected between the ground 16 and the corresponding input terminal 11. Specifically, when the motor is mainly common-mode interference noise and the differential-mode interference is small, the first capacitors 23 (CY 1 and CY 2) are arranged to inhibit the common-mode interference, so that the common-mode filtering effect of the motor EMC filter is improved, and the TVS diode TVS1 is arranged to improve the interference of transient voltage and current. Due to the fact that the patch capacitor CX1 is reduced, good filtering effect can be achieved, and meanwhile cost can be reduced.
In still other embodiments, referring to fig. 6 and 7, one of the first mounting locations 13 is provided with a first device 21, the remaining first mounting locations 13 are empty, the first device 21 is a patch capacitor CX1, the motor EMC filter further includes at least two first capacitors 23 (CY 1, CY 2), at least one extended mounting location 15 in each second region is provided with a first capacitor 23 (CY 1, CY 2), and the first capacitors 23 (CY 1, CY 2) are connected between the ground 16 and the corresponding input terminal 11. Through the setting of paster electric capacity CX1 and first electric capacity 23 (CY 1, CY 2), under the condition that there is not transient interference, both can promote motor EMC filter's common mode filter effect and differential mode filter effect, also can reduce cost.
In still other embodiments, referring to fig. 8 and 9, the first area is provided with two first mounting locations 13, and each first mounting location 13 is provided with one first device 21, where one first device 21 is a TVS diode TVS1, and the other first device 21 is a chip capacitor CX1. Specifically, when the motor is mainly differential mode interference noise and common mode interference is small, by setting the patch capacitor CX1 and the TVS diode TVS1, the interference of transient voltage and current can be improved while the differential mode signal suppression effect is improved. Because the components of the extended mounting position 15 are reduced, the cost can be reduced while a better filtering effect is realized.
In still other embodiments, the first area is provided with two first mounting locations 13, and each first mounting location 13 is provided with one first device 21, where one first device 21 is a TVS diode TVS1 and the other first device 21 is a chip capacitor CX1. The motor EMC filter further comprises at least two first capacitances 23 (CY 1, CY 2), each second region having at least one extension mounting location 15 provided with a first capacitance 23 (CY 1, CY 2), the first capacitances 23 (CY 1, CY 2) being connected between the ground 16 and the corresponding input 11. The first capacitors 23 (CY 1 and CY 2) and the patch capacitor CX1 are arranged at the same time, so that common mode interference and differential mode interference can be restrained, the motor M+/M-electromagnetic noise full-frequency band can be restrained from 30 GHz to 1GHz, and the filtering effect of the motor EMC filter is improved. And the arrangement of the TVS diode TVS1 can improve the disturbance of the transient voltage and current.
In some embodiments, the ground 16 is annular extending along the edge of the inner hole of the annular circuit board 10. So set up, can be convenient for expand the setting of installation position 15, also can be convenient for be connected with the motor housing with ground connection portion 16, guarantee the earthing effect in the time of the installation of being convenient for.
In some embodiments, the extension mounting site 15 is disposed between the second mounting site 14 and the corresponding input terminal 11, and the second device 22 in the second mounting site 14 is connected to the corresponding input terminal 11 through a pad of the extension mounting site 15. By this arrangement, the circuit structure on the ring circuit board 10 can be simplified, and the production cost of the ring circuit can be reduced.
The utility model also provides a motor, which comprises a motor main body and a motor EMC filter, wherein the specific structure of the motor EMC filter refers to the embodiment, and as the motor adopts all the technical schemes of all the embodiments, the motor at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted. The ring-shaped circuit board 10 of the motor EMC filter is arranged on the motor main body, and the output ends 12 of the two second areas on the ring-shaped circuit board 10 are connected with the motor. Optionally, the motor body is a brushed motor.
The utility model also provides an automobile, which comprises an automobile body and a motor, wherein the specific structure of the motor refers to the embodiment, and the electronic equipment adopts all the technical schemes of all the embodiments, so that the automobile at least has all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated here. Wherein the motor is mounted on the vehicle body for connection to a transmission system or other electrically powered device (e.g., a wiper or electric tail gate, etc.) on the vehicle body.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. A motor EMC filter, comprising:
The annular circuit board is provided with a grounding part at the edge of an inner hole of the annular circuit board, a first area and two second areas are arranged on the annular circuit board, the first area is positioned between the two second areas, the first area is provided with two input ends and at least two first mounting positions, each first mounting position is arranged between the two input ends in parallel, and the two input ends correspond to the two second areas one by one; each second area is provided with an output end, a second installation position and an expansion installation position, the expansion installation position in each second area is arranged between the grounding part and the corresponding input end, and the second installation position is arranged between the output end and the corresponding input end;
The first device is one of a TVS diode and a patch capacitor, at least one first mounting position is provided with the first device, and the first device is connected between two input ends; and
And the second device is one of a patch magnetic bead and a patch differential mode inductor, each second installation position is provided with one second device, and the second devices are connected between the input end and the output end.
2. The motor EMC filter of claim 1, wherein at least one of the first mounting locations is provided with the first device, the first device being a TVS diode.
3. The motor EMC filter of claim 1, wherein one of the first mounting locations is provided with the first device, the remaining first mounting locations are empty, the first device is a TVS diode, the motor EMC filter further comprises at least two first capacitances, each of the second areas is provided with at least one of the extended mounting locations with the first capacitance, the first capacitance is connected between the ground and the corresponding input terminal.
4. The motor EMC filter of claim 1, wherein one of the first mounting locations is provided with the first device, the remaining first mounting locations are empty, the first device is a patch capacitor, the motor EMC filter further includes at least two first capacitors, at least one of the extended mounting locations in each of the second areas is provided with the first capacitor, and the first capacitors are connected between the ground and the corresponding input terminal.
5. The EMC filter of claim 1, wherein the first area is provided with two first mounting locations, each of the first mounting locations being provided with one of the first devices, one of the first devices being a TVS diode and the other of the first devices being a chip capacitor.
6. A motor EMC filter as recited in claim 5, further comprising at least two first capacitances, at least one of the extended mounting locations of each of the second areas being provided with the first capacitance, the first capacitances being connected between the ground and the corresponding input.
7. The electro-mechanical EMC filter of claim 1, wherein the extended mount is disposed between the second mount and the corresponding input, and a second device in the second mount is connected to the corresponding input through a pad of the extended mount.
8. The motor EMC filter of claim 7, wherein the ground is ring-shaped extending along an edge of the inner bore of the ring-shaped circuit board.
9. An electric machine comprising a machine body and a machine EMC filter as claimed in any one of claims 1 to 8, which is a ring-shaped circuit board.
10. An automobile comprising the motor of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323035741.7U CN220934982U (en) | 2023-11-09 | 2023-11-09 | Motor EMC filter, motor and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323035741.7U CN220934982U (en) | 2023-11-09 | 2023-11-09 | Motor EMC filter, motor and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220934982U true CN220934982U (en) | 2024-05-10 |
Family
ID=90965123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323035741.7U Active CN220934982U (en) | 2023-11-09 | 2023-11-09 | Motor EMC filter, motor and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220934982U (en) |
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2023
- 2023-11-09 CN CN202323035741.7U patent/CN220934982U/en active Active
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