CN113993322A

CN113993322A - Motor Controller

Info

Publication number: CN113993322A
Application number: CN202111310855.0A
Authority: CN
Inventors: 马文进; 丁咚; 刘屺瞻; 郑鑫; 张向向; 孙博
Original assignee: Suzhou Inovance Technology Co Ltd; Suzhou Inovance Control Technology Co Ltd
Current assignee: Suzhou Huichuan United Power System Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-01-28

Abstract

The invention discloses a motor controller, which comprises a shell, a first module unit, a second module unit, a first copper bar, a second copper bar and a buffer piece, wherein the shell is provided with an installation cavity; the first module unit and the second module unit are arranged in the mounting cavity; one end of the first copper bar is connected with the first module unit; one end of the second copper bar is connected with the second module unit, and the other end of the second module unit is connected with one end of the first copper bar, which is far away from the first module, so that a public connection point is formed; the buffer piece is arranged between the shell and the public connection point and used for reducing vibration of the public connection point. The motor controller provided by the invention can realize the vibration reduction of the copper bar led out from the power module.

Description

Motor controller

Technical Field

The invention relates to the technical field of electric drive, in particular to a vibration reduction structure and a motor controller.

Background

The motor controller is an integrated circuit which controls a motor to work according to set direction, speed, angle and response time through active work, is widely applied to electric vehicles, and converts electric energy stored by a power battery into electric energy required by a driving motor according to instructions of a vehicle gear, an accelerator, a brake and the like so as to control running states of the electric vehicles, such as starting operation, advancing and retreating speed, climbing force and the like.

The power module is arranged in the motor controller, the copper bar is led out of the power module, and the copper bar is in lap joint with the copper bars led out of other functional modules, so that the power module is electrically connected with the other functional modules. Taking a bus capacitor as an example of the functional module, the power module and the bus capacitor are arranged in a vertically stacked manner, a copper bar extending towards the power module is led out from the side direction of the bus capacitor, and the end part of the copper bar is connected with the copper bar on the power module, so that the functional module is electrically connected with the bus capacitor. In the structure of the upper and lower stacking arrangement of the power module and the bus capacitor, the copper bar of the bus capacitor extends to the power module and has a longer length, the copper bar of the bus capacitor is easy to deform in a large amount along with the vibration of the motor controller, and the copper bar pin of the functional module is easy to crack or even break.

In the correlation technique, wrap up a plastic part in the periphery of the copper bar that function module such as bus-bar electric capacity draws forth, utilize the rigidity of plastic part to reduce the deformation of copper bar, alleviate the big problem of copper bar vibration reverberation among the above-mentioned. However, the plastic part need have enough big thickness just can satisfy the damping demand of copper bar, and the plastic part will occupy more space, and for avoiding inside part and plastic part to produce the position interference, need additionally vacate more space in the machine controller and come the holding plastic part, this will influence the overall arrangement of machine control inside part, lead to the volume increase of whole machine controller, also will lead to machine controller's power density reduction simultaneously.

Disclosure of Invention

The invention mainly aims to provide a motor controller, which aims to control the volume of the motor controller and simultaneously realize the vibration reduction of a copper bar in the motor controller.

In order to achieve the above object, the present invention provides a motor controller, including:

the shell is provided with a mounting cavity;

the first module unit is arranged in the mounting cavity;

the second module unit is arranged in the mounting cavity;

one end of the first copper bar is connected with the first module unit;

one end of the second copper bar is connected with the second module unit, and the other end of the second module unit is connected with one end of the first copper bar, which is far away from the first module, so that a public connection point is formed; and

the buffer piece is arranged between the shell and the public connection point and used for reducing the vibration of the public connection point.

In an embodiment of the present invention, the housing includes:

the bottom shell is provided with an accommodating groove; and

the surface cover is sealed and sealed in the notch of the accommodating groove and is enclosed with the groove wall of the accommodating groove to form the mounting cavity, and the buffer piece is located between the surface cover and the public connection point.

In an embodiment of the present invention, the buffer member is inserted into and engaged with the surface cover.

In an embodiment of the invention, a convex portion is disposed on a side of the surface cover facing the bottom wall of the accommodating groove, a concave groove is disposed on a side of the buffer member facing the surface cover, the convex portion is inserted into the concave groove, and the convex portion is inserted into the concave groove to fix the buffer member to the surface cover.

In an embodiment of the present invention, the protruding portion includes a first position-limiting pillar and a second position-limiting pillar that are disposed at an interval on the surface cover, and the groove includes a first position-limiting groove and a second position-limiting groove that are disposed at an interval on the buffer;

the first limiting column is inserted in the first limiting groove, and the second limiting column is inserted in the second limiting groove.

In an embodiment of the invention, a plurality of ribs are disposed at intervals on a side wall of the first position-limiting groove, and each rib extends toward a bottom wall of the first position-limiting groove;

when the first limiting column is inserted into the first limiting groove, each convex edge is abutted and limited with the outer wall of the first limiting column.

In an embodiment of the present invention, the second position-limiting groove includes a first groove section and a second groove section that are communicated with each other, the first groove section is located between the second groove section and the first position-limiting groove, and the second position-limiting post is at least partially accommodated and limited in the second groove section;

or, the buffer piece is provided with a clearance groove on one side facing the surface cover, and the clearance groove is positioned between the first limiting groove and the second limiting groove.

In an embodiment of the invention, a first downward pressing convex part and a second downward pressing convex part are arranged on a side of the buffer element opposite to the surface cover, and the buffer element applies elastic acting force to the common connection point through the first downward pressing convex part and the second downward pressing convex part.

In an embodiment of the present invention, the first module unit is a power module, the second module unit is a bus capacitor module, and the power module is located between the bus capacitor module and the surface cover;

the power module is located bus capacitor module top, the second copper bar is including the first conductive section, the second conductive section and the third conductive section that connect gradually, the second conductive section with first conductive section with the third conductive section is the contained angle setting, first conductive section with bus capacitor module connects, the third conductive section with first copper bar is connected, the bolster is right the third conductive section with the elastic force is applyed to the junction of first copper bar.

In an embodiment of the present invention, the first copper bar is provided with a first mounting hole, the second copper bar is provided with a second mounting hole, and the motor controller further includes a locking member;

the locking piece penetrates through the first mounting hole and the second mounting hole and is used for fixing the first copper bar and the second copper bar;

the bolster with the closure butt, so that the bolster passes through the closure with first copper bar and/or second copper bar elasticity butt.

According to the technical scheme, the buffer piece is arranged in the mounting cavity of the shell of the motor controller, so that the buffer piece exerts elastic acting force on the common connection point of the first copper bar and the second module unit on the first module unit, and the first copper bar and the second copper bar vibrate simultaneously when the motor controller vibrates due to the connection of the first copper bar and the second copper bar. When first copper bar and second copper bar vibrate, the bolster is extrudeed and produces deformation, and the bolster cushions the vibration of public junction department, avoids first copper bar and second copper bar to produce deformation by a wide margin, realizes the damping of first copper bar and second copper bar, effectively protects the reliability of connecting. In addition, because of the bolster sets up on the casing and is located the installation cavity, the bolster is located the surplus space between installation cavity wall and first modular unit and the second modular unit, and the bolster can not cause the interference to the machine controller internals to can promote the utilization ratio in the space in the installation cavity, avoid machine controller's whole volume to increase, realize the control to machine controller volume, satisfy electric vehicle and carry on the restriction in space to machine controller.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of a motor controller according to the present invention;

FIG. 2 is a cross-sectional view of the motor controller of FIG. 1 taken along line A-A';

FIG. 3 is a partial block diagram of the motor controller of FIG. 2;

FIG. 4 is a cross-sectional block diagram of the motor controller of FIG. 1;

FIG. 5 is an exploded view of the motor controller of FIG. 4;

FIG. 6 is a structural view of the buffer member of FIG. 5;

FIG. 7 is a partial block diagram of the housing of FIG. 5;

fig. 8 is a view showing the combination of the housing and the buffer member shown in fig. 4.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. The meaning of "and/or" and/or "appearing throughout is the same, meaning that three scenarios are included, exemplified by" a and/or B ", including either scenario a, or scenario B, or scenarios where both a and B are satisfied. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a motor controller, which is shown in a combined figure 1 and a figure 2 and comprises a shell 1, a first module unit 2, a second module unit 3 and a buffer piece 4, wherein the shell 1 is provided with an installation cavity 1 a; the first module unit 2 and the second module unit 3 are arranged in the installation cavity 1 a; one end of the first copper bar 21 is connected with the first module unit 2, one end of the second copper bar 31 is connected with the second module unit 3, and the other end of the second module unit 3 is connected with one end of the first copper bar 21 far away from the first module 2 to form a public connection point; the buffer 4 is arranged between the shell 1 and the common connection point, and the buffer 4 is used for reducing the vibration of the common connection point.

In this embodiment, a mounting cavity 1a is formed in the casing 1, the mounting cavity 1a is used for accommodating the first module unit 2, the second module unit 3 and the like, and the casing 1 is made of a metal alloy material, so that the casing 1 meets safety regulations, has good heat conduction and heat dissipation performance, and facilitates heat dissipation of the motor controller.

The first module unit 2 is used for controlling the current of the motor, and in the electric vehicle, the first module unit 2 may include a high power transistor, a gate turn-off thyristor, a power field effect transistor, an insulated gate bipolar transistor, an intelligent power module, and the like. First copper bar 21 has been drawn forth to first modular unit 2, and first copper bar 21 is used for the overlap joint with second copper bar 31 that second modular unit 3 was drawn forth, and the overlap joint accessible welding of first copper bar 21 and second copper bar 31, modes such as spiro union realize.

The second module unit 3 includes but is not limited to a bus capacitor, wherein the capacitor module is connected to a filter circuit, and when the second module unit 3 is the bus capacitor, the second copper bar 31 is a conductive piece led out from a core layer of the bus capacitor for realizing electrical connection.

The buffer member 4 is used for elastically buffering the vibration on the first copper bar 21 and the second copper bar 31, wherein the vibration between the first copper bar 21 and the second copper bar 31 may be caused by the relative movement between the first module unit 2 and the second module unit 3. The buffer member 4 can be made of elastic materials such as silica gel and rubber, and the buffer member 4 can be assembled with the cavity wall of the installation cavity 1a in modes such as bonding, inserting, clamping and screwing so that the buffer member 4 is fixed in the installation cavity 1 a. The common connection point is a connection position of the first copper bar 21 and the second copper bar 31 and is formed by connecting the first copper bar 21 and the second copper bar 31 in an overlapping mode. Defining and forming a copper bar structure behind first copper bar 21 and the 31 overlap joint of second copper bar, bolster 4 can set up in the top of this copper bar structure, below or in the side direction setting of this copper bar structure, bolster 4 can be directly with this copper bar structure butt, perhaps be provided with the middleware on this copper bar structure, bolster 4 butt in middleware, the rethread middleware acts on the copper bar structure. Exemplarily, the middleware can be for setting up the lug on the copper bar structure, and the one end and this lug butt that installation cavity 1a chamber wall was kept away from to bolster 4, and during the vibration of copper bar structure, the lug vibrates thereupon and extrudes bolster 4, makes bolster 4 produce elastic deformation to exert reaction force through the lug to the copper bar structure, cushion the vibration of copper bar structure. The above is only an exemplary illustration of the middleware structure, and is intended to facilitate understanding of the solution of the present embodiment, and is not the only limitation on the middleware structure.

This embodiment technical scheme makes bolster 4 apply elastic force to the tie point of first modular unit 2 and second modular unit 3 through set up bolster 4 in the installation cavity 1a at motor controller casing 1, because of first copper bar 21 and second copper bar 31 are connected, first copper bar 21 will vibrate simultaneously with second copper bar 31 during motor controller vibrates. When first copper bar 21 and second copper bar 31 vibrate, bolster 4 is extrudeed and produces deformation, and bolster 4 cushions the vibration of public junction department, avoids first copper bar 21 and second copper bar 31 to produce deformation by a wide margin, realizes the damping of first copper bar 21 and second copper bar 31. In addition, because of bolster 4 sets up in casing 1 and is located installation cavity 1a, bolster 4 is located the surplus space between installation cavity 1a chamber wall and first modular unit 2 and the second modular unit 3, bolster 4 can not cause the interference to the inside part of machine controller, and can promote the utilization ratio in the space in installation cavity 1a, avoid machine controller's whole volume to increase, realize the control to machine controller volume, satisfy electric vehicle and carry on the restriction in space to machine controller.

In an embodiment of the present invention, as shown in fig. 2 and 3, the housing 1 includes a bottom shell 11 and a surface cover 12, the bottom shell 11 has an accommodating groove, the surface cover 12 is hermetically covered on a notch of the accommodating groove and encloses a mounting cavity 1a with a wall of the accommodating groove, and the buffer 4 is located between the surface cover 12 and the common connection point.

In this embodiment, the bottom case 11 and the cover 12 are hermetically connected to each other, so that the mounting cavity 1a is a sealed cavity to prevent interference of external electromagnetic factors and the like to the motor controller.

The sealed connection between the bottom shell 11 and the face cover 12 includes, but is not limited to, being achieved by: the face cover 12 is screwed and fixed on the bottom case 11, the face cover 12 covers the notch of the containing groove of the bottom case 11, and a sealing adhesive is coated in the gap between the face cover 12 and the bottom case 11.

The detachable design of the bottom shell 11 and the face cover 12 not only facilitates the assembly of the first module unit 2 and the second module unit 3 in the accommodating groove, but also facilitates the installation of the buffer member 4 in the electric control controller by installing the buffer member 4 on the face cover 12 and then fixing the installation of the face cover 12 on the bottom shell 11, so that the buffer member 4 is conveniently arranged corresponding to the first copper bar 21 and/or the second copper bar 31.

In an embodiment of the invention, as shown in fig. 4 and 5, a protrusion 121 is disposed on a side of the surface cover 12 facing the bottom wall of the accommodating groove, a groove 4a is disposed on a side of the buffer 4 facing the surface cover 12, the protrusion 121 is inserted into the groove 4a, and the protrusion 121 is inserted into the groove 4a to fix the buffer 4 to the surface cover 12.

In the present embodiment, the protrusion 121 may be a block structure, a column structure, or the like provided on the face cover 12, and the protrusion 121 may be integrally formed with the face cover 12, or may be detachably attached and fixed to the face cover 12 by bonding, inserting, or the like. The groove 4a is a groove structure arranged on the buffer member 4, and the shape and size of the groove 4a can be matched with the shape and size of the convex part 121, so that the buffer member 4 can be installed and fixed on the surface cover 12 by means of the inserting and matching of the convex part 121 and the groove 4 a. On the premise that the shape and size of the groove 4a are matched with those of the protrusion 121, the groove 4a may be a square groove, a polygonal groove, a circular groove, etc., and the protrusion 121 may be a square structure, a block structure with a polygonal cross section, a cylindrical structure, etc.

In an embodiment of the invention, as shown in fig. 6, 7 and 8, the protruding portion 121 includes a first position-limiting post 1211 and a second position-limiting post 1212 that are disposed at an interval on the surface cover 12, and the groove 4a includes a first position-limiting groove 4a1 and a second position-limiting groove 4a2 that are disposed at an interval on the cushion 4; the first position-limiting post 1211 is inserted into the first position-limiting groove 4a1, and the second position-limiting post 1212 is inserted into the second position-limiting groove 4a 2.

In the present embodiment, as shown in fig. 5 and 6, the first limiting groove 4a1 and the second limiting groove 4a2 are disposed at an interval on a side of the cushion 4 facing the surface cover 12, and the first limiting groove 4a1 and the second limiting groove 4a2 are respectively disposed at two opposite ends of the cushion 4.

Referring to fig. 5 and 7, the first positioning post 1211 and the second positioning post 1212 are protruded from a side of the surface cover 12 facing the first module unit 2, and the first positioning post 1211 and the second positioning post 1212 may be made of a hard material such as a metal alloy.

Further referring to fig. 8, the size and shape of the first position-limiting groove 4a1 are adapted to the size and shape of the first position-limiting post 1211, the size and shape of the second position-limiting groove 4a2 are adapted to the size and shape of the first position-limiting post 1211, such that when the first position-limiting post 1211 is inserted into the first position-limiting groove 4a1, the outer wall of the first position-limiting post 1211 abuts against the groove wall of the first position-limiting groove 4a1 for position limitation, the end surface of the first position-limiting post 1211, which is away from the end of the face cover 12, abuts against the bottom wall of the first position-limiting groove 4a1, the outer wall of the second position-limiting post 1212 abuts against the groove wall of the second position-limiting groove 4a2 for position limitation, and the end surface of the second position-limiting post 1212, which is away from the end of the face cover 12, abuts against the bottom wall of the second position-limiting groove 4a 2. Therefore, through the insertion fit of the first limiting column 1211 and the first limiting groove 4a1, and the insertion fit of the second limiting column 1212 and the second limiting groove 4a2, the two opposite ends of the buffering member 4 can be respectively fixed by the first limiting column 1211 and the second limiting column 1212, so as to realize the reliable fixation of the buffering member 4 on the surface cover 12.

In an embodiment of the invention, as shown in fig. 6 and 7, the side wall of the first limiting groove 4a1 is provided with a plurality of spaced ribs 41, and each rib 41 extends toward the bottom wall of the first limiting groove 4a 1; when the first position-limiting post 1211 is inserted into the first position-limiting groove 4a1, each protrusion 41 abuts against and limits the outer wall of the first position-limiting post 1211.

In this embodiment, the plurality of protruding ribs 41 are disposed at intervals on the wall of the first position-limiting groove 4a1, the plurality of protruding ribs 41 can be uniformly distributed on the wall of the first position-limiting groove 4a1, the protruding ribs 41 extend along the depth direction of the first position-limiting groove 4a1, when the first position-limiting post 1211 is inserted into the first position-limiting groove 4a1, the plurality of protruding ribs 41 surround the first position-limiting post 1211, each protruding rib 41 abuts against the outer wall surface of the first position-limiting post 1211 for limiting, an exhaust space is formed between two adjacent protruding ribs 41, when the first position-limiting post 1211 is inserted into the first position-limiting groove 4a1, the outer wall of the first position-limiting post 1211 slides against the protruding ribs 41 and pushes the space in the first position-limiting groove 4a1 outwards, the air in the first position-limiting groove 4a1 is discharged outwards through the space between the plurality of protruding ribs 41, so that the first position-limiting post 1211 can be inserted into the first position-limiting groove 4a1 more easily, the end of the first position-limiting post 1211 away from the surface cover 12 can abut against the bottom wall of the first position-limiting groove 4a1, so that the first position-limiting post 1211 can support the buffering member 4 more stably and reliably. Similarly, the side wall of the second limiting groove 4a2 may also be provided with a plurality of the above-mentioned protruding ribs 41 to facilitate the insertion of the second limiting post into the second limiting groove 4a 2.

In an embodiment of the present invention, as shown in fig. 6 and 7, the second limiting groove 4a2 includes a first groove segment 4a21 and a second groove segment 4a22 that are connected, the first groove segment 4a21 is located between the second groove segment 4a22 and the first limiting groove 4a1, and the second limiting post 1212 is at least partially received and limited in the second groove segment 4a 22; or, as shown in fig. 5 and 7, a clearance groove is formed on a side of the buffer 4 facing the surface cover 12, and the clearance groove is located between the first limiting groove 4a1 and the second limiting groove 4a 2.

In this embodiment, when the second limiting groove 4a2 includes the first groove section 4a21 and the second groove section 4a22 that are connected, the second groove section 4a22 is used for mating with the second limiting post 1212, and the second limiting post 1212 is plugged into the second groove section 4a22, the second limiting post 1212 can be completely received and limited in the second groove section 4a22, or the second limiting post 1212 is partially located at the connection between the first limiting groove 4a1 and the second limiting groove 4a 2. When the second limiting column 1212 is inserted into the second groove section 4a22, the outer wall of the second limiting column 1212 is slidably abutted to the rib 41, and the space in the second groove section 4a22 is extruded outwards; the air in the second groove section 4a22 is discharged outwards through the connection between the first groove section 4a21 and the second groove section 4a22, so that the second position-limiting post 1212 can be inserted into the second groove section 4a22 more easily, and the end of the second position-limiting post 1212 far from the surface cover 12 can abut against the bottom wall of the second groove section 4a22, so that the cushion 4 is supported more stably and reliably through the second position-limiting post 1212. In addition, the first groove section 4a21 is also beneficial to saving the material of the buffer member 4, so that the material cost of the buffer member 4 can be reduced.

When being equipped with between first spacing groove 4a1 and the second spacing groove 4a2 and keeping away the dead slot, first spacing post 1211 is pegged graft in first spacing groove 4a1, the spacing post 1212 of second is pegged graft in second spacing groove 4a2, keep away the setting of dead slot, be favorable to saving the material cost of bolster 4, reduce the structural rigidity of bolster 4 simultaneously, make bolster 4 produce deformation more easily, in order to cushion better the vibration on first copper bar 21 and the second copper bar 31.

In one embodiment of the present invention, as shown in FIGS. 6 and 7, the cross-sectional area of the first stop post 1211 is smaller than the cross-sectional area of the second stop post 1212; and/or the heights of the first 1211 and the second 1212 are different.

In this embodiment, the first 1211 and the second 1212 have different cross-sections, because the first position-limiting post 1211 is inserted into the first position-limiting groove 4a1, the second position-limiting post 1212 is inserted into the second position-limiting groove 4a2, the size and shape of the first position-limiting groove 4a1 are matched with the first position-limiting post 1211, the size and shape of the second position-limiting groove 4a2 are matched with the second position-limiting post 1212, the first stop post 1211 is sized differently from the second stop post 1212, thus, the first position-limiting post 1211 is not matched with the second position-limiting groove 4a2, the second position-limiting post 1212 is not matched with the first position-limiting groove 4a1, when the bumper 4 is mounted and fixed on the surface cover 12, the first position-limiting post 1211 of the buffering element 4 can only be inserted into the first position-limiting groove 4a1, and the second position-limiting post 1212 of the buffering element 4 can only be inserted into the second position-limiting groove 4a2, so that the buffering element 4 can be mounted on the surface cover 12 in a foolproof manner.

As further shown in fig. 5, the first copper bar 21 led out from the first module unit 2 includes a plurality of copper bar terminals, and the adjacent copper bar terminals are arranged in a high-high manner and in a low-low manner, so that the heights of the first spacing column 1211 and the second spacing column 1212 are designed to be different heights, and the height difference between the first spacing column 1211 and the second spacing column 1212 is matched with the height difference between the copper bar terminals, so that the copper bar terminals with different heights can apply the same extrusion force to the buffer member 4, and when the copper bar terminals vibrate, the positions on the buffer member 4 corresponding to different copper bar terminals are compressed and deformed in a consistent manner, thereby improving the reliability of the buffer member 4 for damping the first copper bar 21.

In an embodiment of the present invention, as shown in fig. 6 and 7, a first lower protruding portion 42 and a second lower protruding portion 43 are provided on a side of the buffer member 4 facing away from the surface cover 12, and the buffer member 4 applies an elastic force to the common connection point through the first lower protruding portion 42 and the second lower protruding portion 43.

In this embodiment, as further shown in fig. 5, the first copper bar 21 led out from the first module unit 2 includes a plurality of copper bar terminals, and the first downward pressing convex portion 42 and the second downward pressing convex portion 43 can be respectively used for applying an elastic acting force to two adjacent copper bar terminals, so as to improve the reliability of the buffer 4 for damping the first copper bar 21. The number of the first downward pressing convex parts 42 and the second downward pressing convex parts 43 can be multiple, so that the different first downward pressing convex parts 42 and the different second downward pressing convex parts 43 can apply elastic acting force to different copper bar terminals, and the vibration damping strength of the buffer member 4 to the first copper bar 21 is improved. When adjacent copper bar terminal is the one-high one and hangs down the setting, first protruding portion 42 and the second of pushing down 43 can be used for applying elastic force to two adjacent copper bar terminals respectively, the difference in height of first protruding portion 42 and the second of pushing down 43 can be according to the difference in height adaptation adjustment between two adjacent copper bar terminals, so that when two adjacent copper bar terminals vibrate, first protruding portion 42 and the second of pushing down 43 produce uniformity ground elastic deformation when receiving corresponding copper bar terminal extrusion, in order to promote the reliability of bolster 4 to first copper bar 21 damping.

In an embodiment of the present invention, as shown in fig. 3, the second module unit 3 is a bus capacitor module, and the first module unit 2 is located between the bus capacitor module and the face cover 12; the power module is located above the bus capacitor module, the second copper bar 31 comprises a first conductive segment 311, a second conductive segment 312 and a third conductive segment 313 which are connected in sequence, the second conductive segment 312 and the first conductive segment 311 and the third conductive segment 313 form an included angle, the first conductive segment 311 is connected with the bus capacitor module, the third conductive segment 313 is connected with the first copper bar 21, and the buffer piece 4 applies elastic acting force to the joint of the third conductive segment 313 and the first copper bar 21.

In the embodiment, the power module is arranged above the bus capacitor module, so that the first copper bar 21 led out by the power module and the second copper bar 31 led out by the bus capacitor are overlapped at one side of the power module to form a common connection point. At this moment, the buffer member 4 between the face cover 12 and the public connection point can apply downward extrusion force to the public connection point, because when the motor controller vibrates, the main vibration of the first copper bar 21 and the second copper bar 31 is generated in the direction along the gravity direction of the motor controller, and therefore, through the upper and lower stacking design of the power module and the bus capacitor module, the longitudinal vibration of the first copper bar 21 and the second copper bar 31 can be effectively buffered by the buffer member 4, so that most of the vibration on the first copper bar 21 and the second copper bar 31 is weakened.

The bus capacitor module is electrically connected with the first module unit 2 through the lap joint matching of the second copper bar 31 and the first copper bar 21, and the first conductive end, the second conductive section 312 and the third conductive end of the second copper bar 31 are sequentially connected and can be integrally formed. One end of the first conductive segment 311 is connected to the bus capacitor module, and the other end of the first conductive segment 311 extends from one side of the bus capacitor module to the side wall of the mounting cavity 1a and is connected to the second conductive segment 312; second conducting segment 312 is along the extension of the lateral wall of installation cavity 1a to be close to the lateral wall setting of installation cavity 1a, in order to make full use of the space in installation cavity 1a, be favorable to realizing motor controller's more miniaturized design. One end of the second conductive segment 312, which is far away from the first conductive segment 311, is connected with one end of the third conductive segment 313, which is far away from the first module unit 2, the third conductive segment 313 can be arranged in parallel with one side of the first copper bar 21 and the side cover, which faces the first module unit 2, so that one side of the buffer 4, which faces away from the panel, can be directly or indirectly connected with the first copper bar 21 and/or the third conductive segment 313, and the buffer 4 can be vertically arranged with a plane where the first copper bar 21 and the third conductive segment 313 are located, so as to reduce the vertical height of the buffer 4, reduce the space occupation of the buffer 4, facilitate to avoid the buffer 4 from interfering with internal components of the motor controller, and realize the more miniaturized design of the motor controller.

In an embodiment of the present invention, as shown in fig. 4 and 5, the first copper bar 21 is provided with a first mounting hole 21a, the second copper bar 31 is provided with a second mounting hole 31a, and the motor controller further includes a locking piece 5; the locking piece 5 penetrates through the first mounting hole 21a and the second mounting hole 31a and is used for fixing the first copper bar 21 and the second copper bar 31; the buffer member 4 abuts against the locking member 5, so that the buffer member 4 is elastically abutted against the first copper bar 21 and/or the second copper bar 31 through the locking member 5.

In this embodiment, the first mounting hole 21a and the second mounting hole 31a may be through holes or screw holes, the locking member 5 may be a bolt, a screw, or the like, when the second mounting hole 31a is a screw hole, the inner wall of the second mounting hole 31a is provided with an internal thread, the locking member 5 is provided with an external thread, and the locking member 5 penetrates through the first mounting hole 21a to be screwed into the second mounting hole 31a through the cooperation of the external thread and the internal thread; when the first mounting hole 21a and the second mounting hole 31a are both through holes, the locking element 5 may be a bolt, which includes a screw and a nut, and the screw passes through the first mounting hole 21a and the second mounting hole 31a and is screwed with the nut; thereby realizing the overlapping of the first copper bar 21 and the second copper bar 31.

One side and the closure 5 butt of bolster 4 back to face lid 12, so when first copper bar 21 and second copper bar 31 produce the vibration, closure 5 vibrates thereupon and extrudes bolster 4, elastic deformation appears in bolster 4 and applys reaction force to closure 5, cushions the vibration on first copper bar 21 and the second copper bar 31, avoids first copper bar 21 and second copper bar 31 to produce deformation by a wide margin, realizes the damping of first copper bar 21 and second copper bar 31.

Optionally, one side of bolster 4 towards closure 5 can be equipped with the constant head tank, and when bolster 4 and closure 5 butt, closure 5 at least part holds and spacing in the constant head tank, can promote the spacing reliability of bolster 4 and closure 5 butt so, avoids bolster 4 for 5 lateral shifting of closure and slippage in closure 5, and influences the damping effect of bolster 4 to first copper bar 21 and second copper bar 31.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A motor controller, wherein the motor controller comprises:

a casing, the casing is provided with an installation cavity;

a first module unit, the first module unit is arranged in the installation cavity;

a second module unit, the second module unit is arranged in the installation cavity;

a first copper bar, one end of the first copper bar is connected to the first module unit;

A second copper bar, one end of the second copper bar is connected to the second module unit, and the other end of the second module unit is connected to the end of the first copper bar away from the first module to form point of common connection; and

A buffer member, the buffer member is arranged between the housing and the common connection point, and the buffer member is used for reducing vibration of the common connection point.

2. The motor controller of claim 1, wherein the housing comprises:

a bottom case, the bottom case is provided with an accommodating groove; and

A face cover, the face cover is sealed and covered with the notch of the accommodating groove, and is enclosed with the groove wall of the accommodating groove to form the installation cavity, and the buffer member is located between the face cover and the accommodating groove. between common connection points.

3 . The motor controller according to claim 2 , wherein the buffer member is plug-fitted with the face cover. 4 .

4 . The motor controller according to claim 3 , wherein the side of the cover facing the bottom wall of the accommodating groove is provided with a convex portion, and the side of the buffer member facing the cover is provided with a convex portion. 5 . There is a groove, and the convex portion is inserted into the groove, so that the buffer member is fixed to the face cover.

5 . The motor controller according to claim 4 , wherein the protruding portion comprises a first limiting column and a second limiting column that are arranged at intervals on the face cover, and the groove includes a the first limiting groove and the second limiting groove of the buffer;

The first limiting column is inserted into the first limiting slot, and the second limiting column is inserted into the second limiting slot.

6 . The motor controller according to claim 5 , wherein a plurality of protruding ribs arranged at intervals are disposed on the side wall of the first limiting groove, and each of the protruding ribs faces the first limiting groove. 7 . the bottom wall of the slot extends;

When the first limiting column is inserted into the first limiting groove, each of the protruding ridges abuts against the outer wall of the first limiting column to limit the position.

7 . The motor controller according to claim 5 , wherein the second limiting slot comprises a first slot segment and a second slot segment that communicate with each other, and the first slot segment is located in the second slot. 8 . Between the segment and the first limiting groove, the second limiting column is at least partially accommodated and limited in the second groove segment;

Or, a side of the buffer member facing the face cover is provided with an escape groove, and the escape groove is located between the first limit groove and the second limit groove.

8 . The motor controller according to claim 4 , wherein a first pressing protrusion and a second pressing protrusion are provided on the side of the buffer member facing away from the face cover, and the buffer member An elastic force is applied to the common connection point through the first pressing protrusion and the second pressing protrusion.

9 . The motor controller according to claim 1 , wherein the first module unit is a power module, the second module unit is a bus capacitor module, and the power module is located in the between the bus capacitor module and the face cover;

The power module is located above the bus capacitor module, the second copper bar includes a first conductive segment, a second conductive segment and a third conductive segment connected in sequence, the second conductive segment and the first conductive segment and the third conductive segment is arranged at an angle, the first conductive segment is connected to the busbar capacitor module, the third conductive segment is connected to the first copper bar, and the buffer is connected to the third Elastic force is applied at the connection between the conductive segment and the first copper row.

10 . The motor controller of claim 1 , wherein the first copper bar is provided with a first mounting hole, the second copper bar is provided with a second mounting hole, and the motor controller further comprises: 11 . locking part;

The locking piece passes through the first mounting hole and the second mounting hole, and is used for fixing the first copper bar and the second copper bar;

The buffer member is in abutment with the locking member, so that the buffer member elastically abuts with the first copper bar and/or the second copper bar through the locking member.