Motor controller and vehicle

Abstract

The motor controller comprises a lower shell, a cover plate, a mounting column, a first connecting piece and a control module, the lower shell comprises a side plate and a bottom plate which are connected with each other so as to form a containing cavity with an opening in one side, the mounting column is located in the containing cavity and fixed to the bottom plate, and the control module is fixed in the containing cavity. The edge of the cover plate is fixedly connected with the side plate to cover the opening, and the two ends of the first connecting piece are fixed to the side, close to the containing cavity, of the mounting column and the side, close to the containing cavity, of the cover plate correspondingly. The cover plate is restrained through the first connecting piece, so that the inherent frequency of the cover plate is improved, the cover plate is prevented from resonance, and noise generated by the motor controller is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field, and in particular, to a motor controller and a vehicle. Background Art

[0002] With the development of technology, electric vehicles have gradually been widely used. Currently, when designing the electric drive system of an electric vehicle, the motor, the motor controller, and the reducer are often integrated together to reduce the length of the high-voltage wires and the number of connectors inside the vehicle body, thereby saving the space inside the vehicle and the production cost.

[0003] In the related art, during the integrated design, the motor controller is often fixed above the motor. Among them, the motor controller often includes a lower housing and a cover plate. An accommodating cavity with an opening is formed inside the lower housing. After various electronic components are installed in the accommodating cavity, the edge of the cover plate is connected to the side wall of the lower housing to close the accommodating cavity.

[0004] However, in the above structure, during the driving of the vehicle, the cover plate of the motor controller is prone to resonance with the motor and the reducer, thereby generating a relatively large noise. Summary of the Utility Model

[0005] Embodiments of the present disclosure provide a motor controller and a vehicle, which can solve the above technical problems existing in the related art. The technical solutions are as follows:

[0006] In a first aspect, a motor controller is provided. The motor controller includes a lower housing, a cover plate, a mounting post, a first connecting member, and a control module;

[0007] The lower housing includes a side plate and a bottom plate connected to each other to form an accommodating cavity with an opening on one side. The mounting post is located inside the accommodating cavity and fixed to the bottom plate;

[0008] The control module is fixed inside the accommodating cavity and is used to control the motor;

[0009] The edge of the cover plate is fixedly connected to the side plate to cover the opening;

[0010] Both ends of the first connecting member are respectively fixed to the mounting post and the side of the cover plate close to the accommodating cavity.

[0011] In a possible implementation manner, one of the first connecting member and the mounting post has a first external thread, and the other of the first connecting member and the mounting post has a first internal thread adapted to the first external thread. The first connecting member is threadedly connected to the mounting post.

[0012] In a possible implementation, the first connecting member includes a first connecting portion and a second connecting portion connected to each other. The cross-sectional dimension of the first connecting portion is larger than that of the second connecting portion, and the first external thread is located outside the second connecting portion.

[0013] In a possible implementation, the cover plate further has a connecting through hole, and the motor controller further includes a second connecting member, and the second connecting member passes through the connecting through hole and is connected to the first connecting member.

[0014] In a possible implementation, the first connecting member has a second internal thread, the second connecting member has a second external thread, and the first connecting member and the second connecting member are threadedly connected.

[0015] In a possible implementation, one side of the cover plate close to the accommodation cavity has a positioning groove, the positioning groove is opposite to the mounting post, the connecting through hole is located at the bottom of the positioning groove, and the first connecting member is fixed in the positioning groove.

[0016] In a possible implementation, the first connecting member and the groove wall of the positioning groove are fixedly connected by sealant.

[0017] In a possible implementation, the first connecting member includes a third connecting portion and a fourth connecting portion connected to each other. The cross-sectional dimension of the third connecting portion is smaller than that of the fourth connecting portion. The third connecting portion is located in the positioning groove, and the fourth connecting portion abuts against the edge of the notch of the positioning groove.

[0018] In a possible implementation, the motor controller further includes an elastic member, the elastic member is sleeved outside the first connecting member, and both ends of the elastic member abut against the cover plate and the mounting post respectively.

[0019] In a second aspect, a vehicle is provided, and the vehicle includes the motor controller described in the first aspect.

[0020] The beneficial effects brought by the technical solutions provided by the present disclosure at least include:

[0021] Compared with the related art that only fixes the edge of the cover plate, by providing the first connecting member, the cover plate of the motor controller can be further fixed, that is, constraints are added to the cover plate to increase the natural frequency of the cover plate, so as to avoid resonance between the cover plate and the motor and the reducer, and further reduce the noise generated during the use of the motor controller.

[0022] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 is an exploded view of a motor controller provided by an embodiment of the present disclosure;

[0025] Figure 2 is a schematic structural diagram of an end cover of a motor controller provided by an embodiment of the present disclosure;

[0026] Figure 3 is a schematic structural diagram of a first connecting member of a motor controller provided by an embodiment of the present disclosure;

[0027] Figure 4 is a schematic structural diagram of a motor controller provided by an embodiment of the present disclosure from one perspective;

[0028] Figure 5 is a sectional view of a motor controller provided by an embodiment of the present disclosure.

[0029] Reference numerals:

[0030] 1, lower housing; 11, side plate; 111, second screw hole; 12, bottom plate;

[0031] 2, cover plate; 21, connection through hole; 22, positioning groove; 23, first screw hole;

[0032] 3, mounting post;

[0033] 4, first connecting member; 41, first connecting portion; 42, second connecting portion; 43, third connecting portion; 44, fourth connecting portion;

[0034] 5, second connecting member. Specific embodiments

[0035] To make the purpose, technical solutions, and advantages of the present disclosure clearer, the following will further describe the embodiments of the present application in detail in conjunction with the drawings.

[0036] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present application in detail with reference to the drawings and in conjunction with the embodiments.

[0037] In the related art, when designing the electric drive system of an electric vehicle, the motor, the motor controller, and the reducer are often integrated. In the integrated design, the motor controller is often fixed above the motor. Among them, the motor controller is often box-shaped and includes a lower housing and a cover plate. Threaded holes are provided at the side plates of the lower housing and the edges of the cover plate, and screws pass through the side plates and the screws at the edges of the cover plate to fix the two. However, with such a setting, during the driving of the vehicle, the middle part of the cover plate is prone to deformation and resonance with the motor and the reducer, thereby generating noise.

[0038] An embodiment of the present disclosure provides a motor controller. Referring to Figure 1 As shown, the motor controller includes a lower housing 1, a cover plate 2, a mounting post 3, a first connecting member 4, and a control module. The lower housing 1 includes a side plate 11 and a bottom plate 12 that are connected to each other to form a receiving cavity with one side open. The mounting post 3 is located in the receiving cavity and fixed to the bottom plate 12. The control module is fixed in the receiving cavity and is used to control the motor. The edge of the cover plate 2 is fixedly connected to the side plate 11 to cover the opening, and both ends of the first connecting member 4 are respectively fixed to the mounting post 3 and the side of the cover plate 2 close to the receiving cavity.

[0039] In this way, by providing the first connecting member 4, the cover plate 2 of the motor controller can be further fixed, that is, constraints are added to the cover plate 2 to increase the natural frequency of the cover plate 2, so as to avoid resonance between the cover plate 2 and the motor and the reducer, and further reduce the noise generated by the motor controller during use.

[0040] This embodiment does not limit the materials of the lower housing 1, the cover plate 2, the mounting post 3, and the first connecting member 4. For example: the lower housing 1, the cover plate 2, and the mounting post 3 can be aluminum components, and the first connecting member 4 can be a metal part or a plastic part. In addition, the connection methods of the cover plate 2, the bottom plate 12, and the mounting post 3 in this embodiment are not limited either. For example: the cover plate 2, the bottom plate 12, and the mounting post 3 are integrally formed.

[0041] This embodiment does not limit the fixed connection method of the first connecting member 4 and the cover plate 2. For example: glue is applied to the end or the position near the end of the first connecting member 4, and after the edge of the cover plate 2 is connected to the side plate 11, its fixed connection with the cover plate 2 is realized through the glue. Another example: the first connecting member 4 abuts against the cover plate 2, and laser welding is performed on the two, which can also realize the fixed connection with the cover plate 2. Another example: a buckle is provided on one of the first connecting member 4 and the cover plate 2, and a card slot is provided on the other, and the buckle is snap-connected to the card slot to realize the fixed connection of the first connecting member 4.

[0042] In this embodiment, there is no limitation on the position of the fixed connection between the first connecting member 4 and the cover plate 2. For example, the position where the first connecting member 4 is fixedly connected to the cover plate 2 can be the position where the resonance point of the cover plate 2 is located to ensure the effect of reducing noise.

[0043] In some embodiments, there are multiple first connecting members 4 and mounting posts 3 to further fix the cover plate 2 and increase the natural frequency of the cover plate 2. When arranging the connection positions of the first connecting member 4 and the cover plate 2, the resonance point of the cover plate 2 can be found through simulation first, and the first first connecting member 4 is fixed to the resonance point of the cover plate 2. After fixing the first resonance point of the first first connecting member 4 and the cover plate 2, simulation is carried out again to find the resonance point of the cover plate 2 after the first connecting member 4 is connected to the cover plate 2, and the second first connecting member 4 is fixed to this resonance point of the cover plate 2. After the above two first connecting members 4 are both connected to the cover plate 2, simulation is carried out again to find the resonance point of the cover plate 2 after the above two first connecting members 4 are both connected to the cover plate 2, and so on, so as to maximize the fixing effect on the cover plate 2.

[0044] This embodiment does not limit the connection manner between the edge of the first connecting member 4 and the cover plate 2 and the side plate 11. For example, as Figure 1 shown, the edge of the cover plate 2 has a plurality of first screw holes 23, and the side plate 11 has a plurality of second screw holes 111. The first screw holes 23 and the second screw holes 111 are aligned, and the fixing bolts pass through the first screw holes 23 and enter the second screw holes 111 to achieve the fixed connection between the cover plate 2 and the side plate 11.

[0045] In one implementation manner of the embodiments of the present disclosure, one of the first connecting member 4 and the mounting post 3 has a first external thread, and the other of the first connecting member 4 and the mounting post 3 has a first internal thread adapted to the first external thread, and the first connecting member 4 is threadedly connected to the mounting post 3.

[0046] In this way, through the threaded connection method, the connection between the first connecting member 4 and the mounting post 3 can be more conveniently realized to improve the assembly efficiency of the motor controller.

[0047] In one implementation manner of the embodiments of the present disclosure, with reference to Figure 3 shown, the first connecting member 4 includes a first connecting portion 41 and a second connecting portion 42 connected to each other. The cross-sectional dimension of the first connecting portion 41 is larger than that of the second connecting portion 42, and the first external thread is located outside the second connecting portion 42.

[0048] In this way, a first limiting step is formed between the first connecting portion 41 and the second connecting portion 42. When the second connecting portion 42 enters the mounting post 3 to a certain depth, it abuts against the mounting post 3 or other components in the motor controller through the first limiting step, so as to limit the first connecting member 4, determine the depth of the first connecting member 4 entering the mounting post 3, and thus ensure that the connection position between the first connecting member 4 and the cover plate 2 is controllable, facilitating the connection between the first connecting member 4 and the cover plate 2.

[0049] In one implementation manner of the embodiment of the present disclosure, referring to Figure 2 , Figure 4 and Figure 5 , where Figure 4 is a top view of the motor controller, Figure 5 is a schematic cross-sectional view of the motor controller on the A-A plane. The cover plate 2 further has a connection through hole 21, and the motor controller further includes a second connecting member 5. The second connecting member 5 passes through the connection through hole 21 and is connected to the first connecting member 4.

[0050] In this way, when a fixing method such as gluing is adopted between the first connecting member 4 and the cover plate 2, through the connection and cooperation of the first connecting member 4 and the second connecting member 5, it is possible to prevent the cover plate 2 and the first connecting member 4 from loosening during vibration, so as to ensure the fixing strength of the cover plate 2.

[0051] Optionally, the first connecting member 4 abuts against the edge of the connection through hole 21, so as to support the cover plate on the side of the cover plate 2 close to the accommodation cavity. At the same time, the second connecting member 5 can fix the cover plate on the side of the cover plate 2 far from the accommodation cavity, thereby restricting the deformation or displacement of the cover plate 2 in the direction towards the accommodation cavity or away from the accommodation cavity at this connection position, thus greatly improving the fixing strength of the cover plate 2.

[0052] In one implementation manner of the embodiment of the present disclosure, the first connecting member 4 has a second internal thread, and the second connecting member 5 has a second external thread. The first connecting member 4 and the second connecting member 5 are threadedly connected.

[0053] In this way, through the threaded connection method, it is possible to more conveniently realize the connection between the second connecting member 5 and the first connecting member 4, so as to improve the assembly efficiency of the motor controller.

[0054] In one implementation manner of the embodiment of the present disclosure, the side of the cover plate 2 close to the accommodation cavity has a positioning groove 22. The positioning groove 22 is aligned with the mounting post 3, and the connection through hole 21 is located at the bottom of the positioning groove 22. The first connecting member 4 is fixed in the positioning groove 22.

[0055] In this way, the positioning groove 22 is aligned with the mounting post 3, and a connecting through hole 21 is formed at the bottom of the positioning groove 22, which can realize the positioning of the first connecting member 4, so as to facilitate the fixed connection between the second connecting member 5 and the first connecting member 4, thereby greatly improving the assembly efficiency of the motor controller.

[0056] In an embodiment of the present disclosure, the first connecting member 4 and the groove wall of the positioning groove 22 are fixedly connected by sealant.

[0057] In this way, although the connecting through hole 21 is formed at the bottom of the positioning groove 22, sealant is applied between the first connecting member 4 and the groove wall of the positioning groove 22, so as to ensure the sealing effect between the cover plate 2 and the lower housing 1, so as to ensure that the motor controller can operate normally under various environmental conditions such as wading.

[0058] In some embodiments, the sealant may be epoxy resin.

[0059] In some embodiments, a sealing ring is sleeved outside the second connecting member 5. When the second connecting member 5 is fixedly connected to the first connecting member 4, the sealing ring is located between the second connecting member 5 and the side of the cover plate 2 away from the sealing cavity.

[0060] In an embodiment of the present disclosure, referring to Figure 3 and Figure 5 as shown, the first connecting member 4 includes a third connecting portion 43 and a fourth connecting portion 44 connected to each other. The cross-sectional dimension of the third connecting portion 43 is smaller than that of the fourth connecting portion 44. The third connecting portion 43 is located in the positioning groove 22, and the fourth connecting portion 44 abuts against the edge of the groove opening of the positioning groove 22.

[0061] In this way, a second limiting step is formed between the third connecting portion 43 and the fourth connecting portion 44, and the second limiting step abuts against the edge of the groove opening of the positioning groove 22, so as to ensure that the sealant is filled between the groove wall of the positioning groove 22 and the third connecting portion 43, thereby ensuring the sealing effect of the sealant. Moreover, the fourth connecting portion 44 abuts against the edge of the groove opening of the positioning groove 22, which can support the cover plate 2 and prevent the cover plate 2 from deforming or displacing towards the side close to the accommodating cavity.

[0062] This embodiment does not limit the application method of the sealant. For example, when the third connecting portion 43 abuts against the edge of the connecting through hole 21, before fixing the edge of the cover plate 2 and the side plate 11 of the lower housing 1, the sealant can be applied on the third connecting portion 43. The second limiting step can block the sealant in the positioning groove 22 to prevent the sealant on the third connecting portion 43 from flowing into the sealing cavity. After fixing the edge of the cover plate 2 and the side plate 11 of the lower housing 1, the fixed connection and sealing between the third connecting portion 43 and the cover plate are realized through the sealant applied on the third connecting portion 43. Another example: when the third connecting portion 43 does not abut against the edge of the connecting through hole 21, after fixing the edge of the cover plate 2 and the side plate 11 of the lower housing 1, the fourth connecting portion 44 abuts against the edge of the notch of the positioning groove 22, and the sealant is injected into the positioning groove 22 through the connecting through hole 21, so as to realize the fixation and sealing between the third connecting portion 43 and the groove wall of the positioning groove 22.

[0063] In an implementation manner of the embodiments of the present disclosure, the motor controller further includes an elastic member, the elastic member is sleeved outside the first connecting member 4, and both ends of the elastic member respectively abut against the cover plate 2 and the mounting post 3.

[0064] In this way, by providing the elastic member, the cover plate 2 can be buffered to further prevent the cover plate 2 from vibrating, and further prevent the motor controller from generating noise during use.

[0065] The present disclosure does not limit the specific type of the elastic member. For example, the elastic member can be a spring.

[0066] The embodiments of the present disclosure also provide a vehicle, and the vehicle includes the motor controller mentioned above.

[0067] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0068] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for the sake of convenience in description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the description. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0069] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" is generally based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanation, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0070] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0071] In addition, it should be noted that the use of words such as "first", "second" to limit components is only for the convenience of differentiating the corresponding components. Without otherwise stating, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present application.

[0072] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A motor controller, characterized in that, The motor controller includes a lower housing (1), a cover plate (2), a mounting post (3), a first connecting member (4), and a control module; The lower housing (1) includes a side plate (11) and a bottom plate (12) connected to each other to form a receiving cavity with an opening on one side. The mounting post (3) is located in the receiving cavity and fixed to the bottom plate (12); The control module is fixed in the receiving cavity and is used to control the motor; The edge of the cover plate (2) is fixedly connected to the side plate (11) to cover the opening; Both ends of the first connecting member (4) are respectively fixed to the mounting post (3) and the side of the cover plate (2) close to the receiving cavity.

2. The motor controller according to claim 1, wherein One of the first connecting member (4) and the mounting post (3) has a first external thread, and the other of the first connecting member (4) and the mounting post (3) has a first internal thread adapted to the first external thread, and the first connecting member is threadedly connected to the mounting post (3).

3. The motor controller according to claim 2, wherein The first connecting member (4) includes a first connecting portion (41) and a second connecting portion (42) connected to each other. The cross-sectional dimension of the first connecting portion (41) is larger than that of the second connecting portion (42), and the first external thread is located outside the second connecting portion (42).

4. The motor controller according to claim 1, wherein The cover plate (2) further has a connecting through hole (21). The motor controller further includes a second connecting member (5), and the second connecting member (5) passes through the connecting through hole (21) and is connected to the first connecting member (4).

5. The motor controller according to claim 4, wherein The first connecting member (4) has a second internal thread, and the second connecting member (5) has a second external thread, and the first connecting member (4) and the second connecting member (5) are threadedly connected.

6. The motor controller according to claim 4, wherein The side of the cover plate (2) close to the receiving cavity has a positioning groove (22). The positioning groove (22) is opposite to the mounting post (3). The connecting through hole (21) is located at the bottom of the positioning groove (22), and the first connecting member (4) is fixed in the positioning groove (22).

7. The motor controller according to claim 6, wherein The first connecting member (4) is fixedly connected to the groove wall of the positioning groove (22) by a sealant.

8. The motor controller according to claim 6, wherein The first connecting member (4) includes a third connecting portion (43) and a fourth connecting portion (44) connected to each other. The cross-sectional dimension of the third connecting portion (43) is smaller than that of the fourth connecting portion (44). The third connecting portion (43) is located in the positioning groove (22), and the fourth connecting portion (44) abuts against the edge of the opening of the positioning groove (22).

9. The motor controller according to claim 1, wherein The motor controller further includes an elastic member, which is sleeved outside the first connecting member (4), and both ends of the elastic member are respectively abutted against the cover plate (2) and the mounting post (3).

10. A vehicle, characterized in that the vehicle includes the motor controller according to any one of claims 1-9.

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