Motor controller and vehicle

Abstract

This utility model discloses a motor controller and a vehicle, relating to the field of electronic device technology. The motor controller includes a control module, a cover, and a conductive rubber component. The control module includes an electronic control board and a mounting base, with the electronic control board disposed on the mounting base. The cover is disposed on the mounting base and has a shielding groove, with at least a portion of the electronic control board disposed within the shielding groove. The conductive rubber component is disposed between the groove wall of the shielding groove and the control module, with the groove wall of the shielding groove communicating with the control module via the conductive rubber component. The conductive rubber component is made of rubber material and conductive material. The rubber material includes at least one of silicone rubber and EPDM, and the conductive material includes at least one of aluminum powder and silver powder. The conductive rubber component provided by this utility model is more practical than the connectors in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of electronic device technology, and in particular to a motor controller and a vehicle. Background Technology

[0002] In the electrical systems of new energy vehicles, the electronic components in the motor controller generate strong magnetic fields during operation, and these electromagnetic waves can interfere with other circuit components, requiring protection for these components. Filtering, shielding, and grounding are the three key elements of EMC design. Among them, grounding effectively suppresses electromagnetic interference and improves the immunity of equipment by establishing a unified potential reference and providing a low-impedance loop, thereby ensuring the electromagnetic compatibility of the system.

[0003] Currently, traditional shielding and grounding solutions involve covering a molded shielding cavity and grounding the cavity through grounding components. However, existing grounding components are made of composite structures to meet installation requirements. These composite structures are not only difficult to manufacture but also costly. Utility Model Content

[0004] The main purpose of this invention is to propose a motor controller and vehicle, which aims to solve the problem of low practicality of existing grounding components.

[0005] To achieve the above objectives, this utility model proposes a motor controller, comprising:

[0006] The control module includes an electronic control board and a mounting base, wherein the electronic control board is mounted on the mounting base;

[0007] A cover is provided on the mounting base, the cover having a shielding groove, and at least a portion of the electronic control board is disposed within the shielding groove;

[0008] as well as,

[0009] A conductive rubber component is disposed between the wall of the shielding groove and the control module, and the wall of the shielding groove is connected to the control module through the conductive rubber component.

[0010] In one embodiment, the conductive rubber component is made of rubber material and conductive material.

[0011] In one embodiment, the rubber material includes at least one of silicone rubber, EPDM, ethylene acrylate rubber, acrylate rubber, nitrile rubber, and fluororubber;

[0012] The conductive material includes at least one of a metallic material and conductive carbon powder, wherein the metallic material includes at least one of aluminum powder, silver powder, copper powder and gold powder, and the conductive carbon powder includes at least one of carbon black and graphene.

[0013] In one embodiment, the cross-section of the conductive rubber component along the height direction is circular, rectangular, triangular, convex, or irregular in shape;

[0014] And / or, the conductive rubber component has through holes along its length and / or width.

[0015] In one embodiment, the conductive rubber component includes a body portion and protrusions. The protrusions are disposed on the body portion, and there are multiple protrusions arranged at intervals along the length direction and / or width direction of the body portion.

[0016] In one embodiment, the conductive rubber component has a groove for inserting the control module and / or the wall of the shielding groove.

[0017] In one embodiment, the control board is provided with a grounding structure, and the conductive rubber component is disposed between the wall of the shielding groove and the control board and located on the grounding structure. One end of the conductive rubber component is connected to the wall of the shielding groove, and the other end is connected to the grounding structure.

[0018] In one embodiment, the mounting base is grounded;

[0019] The conductive rubber component is disposed between the wall of the shielding groove and the mounting base, with one end of the conductive rubber component connected to the wall of the shielding groove and the other end connected to the mounting base.

[0020] In one embodiment, at least one of the control module and the wall of the shielding groove is provided with a mounting groove, and the conductive rubber component is interference-fitted with the mounting groove;

[0021] And / or, the conductive rubber component is connected to at least one of the control module and the wall of the shielding groove by conductive adhesive.

[0022] This utility model also proposes a vehicle, including the motor controller as described in the above embodiments.

[0023] The technical solution of this utility model enables the wall of the shielding groove on the cover to be grounded to the control module through the conductive rubber component. Since the conductive rubber component is a composite material, not a composite structure, the manufacturing process of the conductive rubber component is relatively simple, and the material for making the conductive rubber component is relatively easy to obtain, so the cost of making the conductive rubber component is lower, thereby achieving the purpose of improving practicality. Attached Figure Description

[0024] 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 A partial structural schematic diagram of the control module of the motor controller provided by this utility model;

[0026] Figure 2 A partial structural schematic diagram of the cover of the motor controller provided by this utility model;

[0027] Figure 3 A schematic diagram of the structure of the shielding groove wall, conductive rubber parts, and electronic control board provided by this utility model;

[0028] Figure 4 A schematic diagram of an embodiment of the connection between the conductive rubber component and the electronic control board provided by this utility model;

[0029] Figure 5 A schematic diagram of another embodiment of the connection between the conductive rubber component and the electronic control board provided by this utility model;

[0030] Figure 6 A schematic diagram of the structure of the conductive rubber component provided by this utility model;

[0031] Figure 7 A schematic diagram of the cross-section along the height direction of the first embodiment of the conductive rubber part provided by this utility model;

[0032] Figure 8 A schematic diagram of the cross-section along the height direction of the second embodiment of the conductive rubber part provided by this utility model;

[0033] Figure 9 A schematic diagram of the cross-section along the height direction of the third embodiment of the conductive rubber component provided by this utility model;

[0034] Figure 10 A schematic diagram of the cross-section along the height direction of the fourth embodiment of the conductive rubber component provided by this utility model;

[0035] Figure 11 A schematic diagram of the cross-section along the height direction of the fifth embodiment of the conductive rubber part provided by this utility model;

[0036] Figure 12 This is a structural schematic diagram of the cross-section along the height direction of the sixth embodiment of the conductive rubber part provided by this utility model.

[0037] Explanation of icon numbers:

[0038] 1. Motor controller; 10. Control module; 11. Mounting base; 12. Electrical control board; 121. Grounding structure; 20. Cover; 21. Shielding groove; 211. Groove wall; 30. Conductive rubber part; 301. Through hole; 31. Body part; 32. Protrusion.

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0041] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] In the electrical systems of new energy vehicles, the electronic components in the motor controller generate strong magnetic fields during operation, and these electromagnetic waves can interfere with other circuit components, requiring protection for these components. Filtering, shielding, and grounding are the three key elements of EMC design. Among them, grounding effectively suppresses electromagnetic interference and improves the immunity of equipment by establishing a unified potential reference and providing a low-impedance loop, thereby ensuring the electromagnetic compatibility of the system.

[0044] Currently, traditional shielding and grounding solutions involve forming a shielding cavity on a housing and grounding components to enable the shielding cavity to perform grounding functions. However, existing grounding components are made of composite structures to meet installation requirements. Such composite structures are not only difficult to manufacture but also costly.

[0045] To address the aforementioned problems, this utility model proposes a motor controller that is applied to vehicles.

[0046] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment of this utility model, the motor controller 1 includes a control module 10, a cover 20, and a conductive rubber component 30. The control module 10 includes a mounting base 11 and an electronic control board 12, with the electronic control board 12 disposed on the mounting base 11. The cover 20 covers the mounting base 11 and has a shielding groove 21, with at least a portion of the electronic control board 12 disposed within the shielding groove 21. The conductive rubber component 30 is disposed between the groove wall 211 of the shielding groove 21 and the control module 10, with the groove wall 211 of the shielding groove 21 communicating with the control module 10 via the conductive rubber component 30.

[0047] The technical solution of this utility model involves providing a shielding groove 21 on the cover 20. When the cover 20 is placed on the mounting base 11 of the control module 10, the shielding groove 21 is at least partially located on the electronic control board 12 within the mounting base 11. That is, the projection of the shielding groove 21 along the height direction of the motor controller 1 at least partially overlaps with the electronic control board 12 mounted in the mounting base 11. This arrangement allows at least some electronic components on the electronic control board 12 to be protected from external electromagnetic influences or from the propagation of electromagnetic influences to the outside world through the shielding groove 21. It is worth mentioning that the shielding groove 21 can be formed by at least one groove wall 211 enclosing the cover 20. Of course, the shielding groove 21 can also be formed by multiple groove walls 211. No further limitations are imposed on this. Because poor contact may occur between the shielding groove 21 and the mounting base 11 when the cover 20 is placed on the mounting base 11, this embodiment proposes to solve this problem by providing a conductive rubber component 30 with elasticity and conductivity between the control module 10 and the cover 20. This conductive rubber component 30 is mainly used to make the groove wall 211 of the shielding groove 21 of the cover 20 conductively connected to the control module 10, thus achieving grounding. When the shielding groove 21 receives electromagnetic influence from the outside or from the control board 12 itself, the shielding groove 21 can ground the electromagnetic field through the conductive rubber component 30 to prevent the electromagnetic field from affecting the electronic components on the control board 12. It is worth noting that the mounting base 11 in the control module 10 is directly grounded, and the control board 12 also has a corresponding grounding structure 121 to protect the electronic components. Therefore, when the groove wall 211 of the shielding groove 21 abuts against the mounting base 11 or the control board 12 through the conductive rubber component 30, grounding can be achieved.

[0048] It is understandable that the conductive rubber component 30 not only has elasticity but also conductivity. Therefore, when the cover 20 is placed on the mounting base 11, the conductive rubber component 30 can enhance the effect of tight contact between the groove wall 211 of the shielding groove 21 and the control module 10 through its own elasticity.

[0049] This configuration allows the wall 211 of the shielding groove 21 on the cover 20 to be grounded to the control module 10 via the conductive rubber component 30. Since the conductive rubber component 30 is a composite material rather than a composite structure, its manufacturing process is relatively simpler, and the material used to make the conductive rubber component 30 is easier to obtain, resulting in a lower cost and thus improving its practicality.

[0050] In one embodiment, the conductive rubber component 30 is made of rubber material and conductive material. The conductive rubber component 30 is mainly made by mixing rubber material and conductive material and then casting or injection molding. The ratio of the two can be determined according to the actual conductivity. For example, if a higher conductivity is desired, the proportion of conductive material in the total mixture can be increased. There are no further limitations on this.

[0051] In one embodiment, the rubber material includes at least one of silicone rubber, EPDM, ethylene acrylate rubber, acrylate rubber, nitrile rubber, and fluororubber; the conductive material includes at least one of a metal material and conductive carbon powder, wherein the metal material includes at least one of aluminum powder, silver powder, copper powder, and gold powder, and the conductive carbon powder includes at least one of carbon black and graphene. For example, the rubber material may be one of silicone rubber (VMQ), EPDM, ethylene acrylate rubber (AEM), acrylate rubber (ACM), nitrile rubber (NBR), and fluororubber (FKM), or a mixture of multiple of the above materials; and the conductive material includes at least one of a metal material and conductive carbon powder, wherein the metal material may be one of aluminum powder, silver powder, copper powder, and gold powder, or a mixture of multiple of the above materials, and the conductive carbon powder may be carbon black or graphene, or a mixture of carbon black and graphene. Of course, rubber materials can also be other materials with elastic properties, and conductive materials can also be other materials with conductive properties; there are no further limitations on this.

[0052] In one embodiment, the conductive rubber component 30 has a circular, rectangular, triangular, convex arc, or irregular cross-section along its height direction; and / or, the conductive rubber component 30 has a through hole 301 extending along its length and / or width direction. For example, as... Figure 7 , Figure 8 as well as Figure 9As shown, the shape of the conductive rubber component 30 can be customized according to actual needs; it can be elongated or cylindrical. For example, the conductive rubber component 30 can be configured with a circular, rectangular, triangular, convex arc, or irregular cross-section along the height direction. Its shape design can be tailored to specific circumstances. For instance, to further reduce the overall elasticity of the conductive rubber component 30, the cross-sectional shape along the height direction can be designed as triangular, convex arc, or irregular. This not only reduces the overall elasticity of the conductive rubber component 30 but also further reduces its manufacturing cost. In other embodiments, through holes 301 can be formed in the conductive rubber component 30 of the above-mentioned shapes along the length direction, width direction, or both length and width directions to further reduce the overall elasticity and manufacturing cost of the conductive rubber component 30. It is worth noting that the length, width, and height of the conductive rubber component 30 are a, b, and h, respectively, where a is between 3 and 4 mm, b is between 3 and 4 mm, and h is between 2 and 4 mm. The volume resistivity of the conductive rubber is ≤0.05 Ω·cm. It is understandable that, such as Figure 6 As shown, label 'a' represents the length direction, label 'b' represents the width direction, and label 'h' represents the height direction. It should be noted that the height direction refers to the stacking direction of the mounting base 11 and the cover 20.

[0053] In one embodiment, the conductive rubber component 30 includes a body portion 31 and protrusions 32. The protrusions 32 are disposed on the body portion 31, and there are multiple protrusions 32 arranged at intervals along the length direction and / or width direction of the body portion 31. For example, Figure 10 , Figure 11 as well as Figure 12 As shown, the conductive rubber component 30 includes a body portion 31 and protrusions 32. The body portion 31 is conventionally rectangular, while the protrusions 32 are spike-shaped or protruding. In this embodiment, multiple protrusions 32 are provided. The multiple protrusions 32 are arranged at intervals along the length or width direction of the conductive rubber component 30, or arranged in an array at intervals along the length and width directions. This arrangement can achieve the same effect as the above embodiment, which can also reduce the overall elasticity of the conductive rubber component 30 and reduce the manufacturing cost of the conductive rubber component 30.

[0054] In one embodiment, the conductive rubber component 30 has a groove for insertion into the control module 10 and / or the wall 211 of the shielding groove 21. To facilitate connection between the conductive rubber component 30 and the wall 211 of the shielding groove 21 or the control module 10, in this embodiment, a groove is formed on the surface of the conductive rubber component 30 relative to the wall 211 of the shielding groove 21 or the control module 10. This allows the shielding groove 21 or the control module 10 to be inserted into the groove of the conductive rubber component 30 when the cover 20 is placed on the mounting base 11, thereby achieving a better connection. Of course, in other embodiments, grooves can also be formed on both sides of the conductive rubber component 30 corresponding to the groove wall 211 of the shielding groove 21 and the control module 10, so that the groove wall 211 of the shielding groove 21 and the control module 10 can achieve a tight contact effect with the conductive rubber component 30 through the grooves. It can be understood that the grooves are set on the electronic control board 12 or the mounting base 11 of the control module 10.

[0055] In one embodiment, the control board 12 is provided with a grounding structure 121, and the conductive rubber component 30 is disposed between the wall 211 of the shielding groove 21 and the control board 12, and is located on the grounding structure 121. In this embodiment, the control board 12 is provided with a grounding structure 121, which can be directly grounded or grounded through the mounting base 11. No further limitations are imposed on this. In this embodiment, the conductive rubber component 30 is disposed between the control board 12 and the wall 211 of the shielding groove 21, and is located above the grounding structure 121. This arrangement allows the shielding groove 21 above the control board 12 to conduct through the wall 211 to the conductive rubber component 30, and then through the conductive rubber component 30 to the grounding structure 121, thereby achieving the grounding function. This arrangement also achieves the same effect as described above.

[0056] In one embodiment, the mounting base 11 is grounded; the conductive rubber component 30 is disposed between the groove wall 211 of the shielding groove 21 and the mounting base 11. In this embodiment, the mounting base 11 in the control module 10 is directly grounded. Similarly, in order to enable the shielding groove 21 provided on the cover 20 to achieve the same function as described above, the conductive rubber component 30 is disposed between the mounting base 11 and the groove wall 211 of the shielding groove 21, so that the groove wall 211 of the shielding groove 21 is connected to the mounting base 11 through the conductive rubber component 30 and grounded through the mounting base 11. This arrangement can prevent the groove wall 211 of the shielding groove 21 from applying pressure to the electronic control board 12, which could lead to damage to the electronic control board 12.

[0057] In one embodiment, at least one of the control module 10 and the groove wall 211 of the shielding groove 21 is provided with a mounting groove, and the conductive rubber component 30 is interference-fitted with the mounting groove; and / or, the conductive rubber component 30 is connected to at least one of the control module 10 and the groove wall 211 of the shielding groove 21 by conductive adhesive. For example, as... Figure 5 As shown, a mounting groove can be provided on either the control board 12 or the wall 211 of the shielding groove 21. The conductive rubber component 30 is then inserted into the mounting groove via a plug-in connection, allowing the conductive rubber component 30 to be positioned and installed by an interference fit with the mounting groove. Alternatively, mounting grooves can be provided on both the control board 12 and the wall 211 of the shielding groove 21 simultaneously; this is not a limitation. In other embodiments, mounting grooves can be provided on at least one of the mounting base 11 and / or the wall 211 of the shielding groove 21 to achieve the same function as in the above embodiments; this will not be elaborated further. For example, as... Figure 4 As shown, the conductive rubber component 30 can also be bonded to the wall 211 of the control board 12 and / or the shielding groove 21 using conductive adhesive, or bonded to both the control board 12 and the wall 211 of the shielding groove 21 using conductive adhesive. In other embodiments, the conductive rubber component 30 can be bonded to the mounting base 11 and / or the wall 211 of the shielding groove 21 using conductive adhesive, or bonded to both the mounting base 11 and the wall 211 of the shielding groove 21 using conductive adhesive; this is not a limitation. It is worth mentioning that the conductive rubber component 30 can be disposed on the inner wall surface of the groove wall 211 or on the surface of the groove wall 211 corresponding to the control module 10 using conductive adhesive; this is not a limitation. It is understood that for mounting groove fixation, if higher fixation strength is required, the size of the mounting groove relative to the size of the conductive rubber component 30 needs to be further reduced, and the surface roughness of the interference surface needs to be increased to achieve sufficient fixation strength. When using conductive adhesive, the bonding strength needs to meet 1 MPa to fix the conductive adhesive itself. However, if the conductive rubber needs to undergo logistics transportation before the shielding groove 21 is assembled, in order to prevent the conductive rubber part 30 from falling off, the surface quality of the grounding structure 121 needs to be high. For example, its surface roughness needs to be less than Ra6.3 to achieve a sufficiently strong bonding strength between the conductive rubber part 30 and the control board 12.

[0058] This utility model also proposes a vehicle, which includes a motor controller 1 as described in the above embodiments. The specific structure of the motor controller 1 is as described in the above embodiments. Since this vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0059] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made under the technical concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. An electric motor controller characterized by, include: The control module includes an electronic control board and a mounting base, wherein the electronic control board is mounted on the mounting base; A cover is provided on the mounting base, the cover having a shielding groove, and at least a portion of the electronic control board is disposed within the shielding groove; as well as, A conductive rubber component is disposed between the wall of the shielding groove and the control module, and the wall of the shielding groove is connected to the control module through the conductive rubber component.

2. The motor controller of claim 1, wherein, The conductive rubber component is made of rubber material and conductive material.

3. The motor controller as described in claim 2, characterized in that, The rubber material includes at least one of silicone rubber, EPDM, ethylene acrylate rubber, acrylate rubber, nitrile rubber, and fluororubber; The conductive material includes at least one of a metallic material and conductive carbon powder, wherein the metallic material includes at least one of aluminum powder, silver powder, copper powder and gold powder, and the conductive carbon powder includes at least one of carbon black and graphene.

4. The motor controller as described in claim 1, characterized in that, The cross-section of the conductive rubber component along the height direction is circular, rectangular, triangular, convex, or irregular. And / or, the conductive rubber component has through holes along its length and / or width.

5. The motor controller as described in claim 1, characterized in that, The conductive rubber component includes a body portion and protrusions. The protrusions are disposed on the body portion, and there are multiple protrusions. The multiple protrusions are arranged at intervals along the length direction and / or width direction of the body portion.

6. The motor controller as described in claim 1, characterized in that, The conductive rubber component has a groove for inserting the control module and / or the wall of the shielding groove.

7. The motor controller according to any one of claims 1 to 6, characterized in that, The control board is provided with a grounding structure. The conductive rubber component is located between the wall of the shielding groove and the control board and on the grounding structure. One end of the conductive rubber component is connected to the wall of the shielding groove, and the other end is connected to the grounding structure.

8. The motor controller according to any one of claims 1 to 6, characterized in that, The mounting base is grounded; The conductive rubber component is disposed between the wall of the shielding groove and the mounting base, with one end of the conductive rubber component connected to the wall of the shielding groove and the other end connected to the mounting base.

9. The motor controller according to any one of claims 1 to 6, characterized in that, At least one of the control module and the wall of the shielding groove is provided with a mounting groove, and the conductive rubber component is interference-fitted with the mounting groove. And / or, the conductive rubber component is connected to at least one of the control module and the wall of the shielding groove by conductive adhesive.

10. A vehicle, characterized in that, Includes the motor controller as described in any one of claims 1 to 9.

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