Busbars, motors, pumps and vehicles

Abstract

The present invention provides a busbar, a motor, a water pump and a vehicle, wherein the busbar comprises a frame and a busbar, wherein an assembly portion is provided on the frame, wherein the busbar is arranged on the frame, wherein the number of the busbars is at least three, wherein any two of the at least three busbars have the same structure, and wherein the busbar comprises a main body, wherein the main body is arranged on the assembly portion. In the present invention, by making the structures of the busbars the same, the number of molds for preparing the busbars can be reduced, the difficulty of processing the busbars can be reduced, the production efficiency can be improved, the production cost of the busbar can be reduced, and the competitiveness of the product can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a bus, a motor, a water pump and a vehicle. Background Art

[0002] At present, the busbar of a motor is composed of multiple bus bars, which are interconnected with the starting and ending ends of the windings in the motor stator to ensure the normal operation of the motor. However, the structures of the multiple bus bars at existing points are different. Multiple sets of molds are required to prepare bus bars with different structures, which directly leads to increased product costs and reduced product competitiveness. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, a first aspect of the present invention is to provide a busbar.

[0005] A second aspect of the present invention is to provide an electric motor.

[0006] A third aspect of the present invention is to provide a water pump.

[0007] A fourth aspect of the present invention provides a vehicle.

[0008] In view of this, according to a first aspect of the present invention, a bus is provided for a motor, the bus comprising a frame and a busbar, the frame being provided with an assembly portion, the busbar being arranged on the frame, the number of the busbars being at least three, any two of the at least three busbars having the same structure, the busbar comprising a main body portion, and the main body portion being arranged on the assembly portion.

[0009] The busbar provided by the present invention includes a skeleton and a busbar, and the busbar is arranged on the skeleton. Among them, the skeleton is an insulating part, the skeleton is annular, and the skeleton can be formed by injection molding. The skeleton is used to provide support for the busbar and isolate the adjacent busbars among at least three busbars, so as to play the role of electrical insulation. The busbar is a conductor, and the busbar is used to connect the winding ends that need to be connected together in the multiple windings of the motor stator, thereby realizing the electrical connection of the multiple winding ends and realizing the bus function. In the present invention, by making the structure of the busbars the same, the number of molds for preparing the busbars can be reduced, the processing difficulty of the busbars can be reduced, the production efficiency can be improved, the production cost of the busbar can be reduced, and the competitiveness of the product can be effectively improved. Specifically, at least three busbars include a U-phase busbar, a V-phase busbar and a W-phase busbar, that is, the shapes and sizes of the U-phase busbar, the V-phase busbar and the W-phase busbar are completely consistent. Furthermore, the busbar is made of copper, which has good electrical conductivity and is relatively cheap. In addition, copper is easy to stamp and has the advantages of sufficient hardness. Specifically, the busbar includes a main body, which is arranged on the frame through an assembly part. The assembly part can be an assembly groove, and the main body is embedded in the assembly groove, which is easy to assemble. Of course, the assembly part can also be a connecting structure, and the main body can cooperate with the connecting structure to realize that the busbar is located on the frame.

[0010] In a possible design, further, the busbar includes a main body portion, which is arranged on the skeleton, and the main body portion includes a first main body section, a second main body section and a bending section, wherein the distance between any point on the second main body section and the central axis of the motor is smaller than the distance between any point on the first main body section and the central axis of the motor; the bending section is connected between the first main body section and the second main body section.

[0011] In this design, the main body is divided into a first main body section, a second main body section and a bending section, wherein the distance between any point on the first main body section and the central axis of the motor is greater than the distance between any point on the second main body section and the central axis of the motor, that is, the distances between the first main body section and the second main body section and the central axis are not equal. At this time, the first main body section and the second main body section are connected by the bending section. When there are multiple bus bars in the bus, the first main body section and the second main body section with different radial sizes can facilitate the arrangement of multiple bus bars of the same structure on the skeleton. Specifically, the first main body section is a first arc section, and the second main body section is a second arc section. The first arc section and the second arc section have the same center, and the radius of the first arc section is greater than the radius of the second arc section, that is, the first arc section and the second arc section are concentric but have different diameters. The first arc section and the second arc section are not complete rings, and the first arc section and the second arc section can be formed by bending or the like.

[0012] Further, on a plane perpendicular to the axis of the skeleton, the main body of all the busbars can form two incomplete circular rings. Specifically, the first main body section in the main body of all the busbars can form an incomplete first circular ring, and the second main body section in the main body of all the busbars can form an incomplete second circular ring, wherein the radius of the first circular ring is greater than the radius of the second circular ring.

[0013] Furthermore, by setting a bending section between the first main section and the second main section, the first main section and the second main section in the plurality of bus bars can be arranged in a staggered manner in the radial direction of the skeleton through the bending section, that is, the plurality of first main sections in the plurality of bus bars can form a ring with a larger radius, and the plurality of second main sections in the plurality of bus bars can form a ring with a smaller radius. At this time, the outer contour of the overall structure formed by the mutual arrangement of the plurality of bus bars is a regular circle. This can reduce the difficulty of preparing the skeleton for assembling the bus bars, that is, the skeleton can also be made into a regular shape, reducing the preparation cost of the skeleton, so that the overall structure of the bus bar can be applied to existing motors, and has strong versatility.

[0014] In a possible design, further, the at least three bus bars include a first bus bar and a second bus bar that are adjacent to each other, and the first main body section of the first bus bar is located on a side of the second main body section of the second bus bar that is away from the central axis of the motor.

[0015] In this design, at least three busbars include a first busbar and a second adjacent busbar, wherein the main body includes a first side close to the central axis of the motor and a second side away from the central axis of the motor. The connection method of the two adjacent busbars is as follows: the first main body section of the first busbar is located on the second side of the second main body section of the second busbar, that is, any two adjacent busbars among the at least three busbars satisfy the above arrangement method. Therefore, when multiple busbars with the same structure are arranged, interference between the busbars will be avoided according to this arrangement method. In addition, according to this arrangement method, the density of the busbars can be improved, and the size of the product can be further reduced.

[0016] In a possible design, further, the axial thickness of the main body portion is greater than the radial thickness of the main body portion.

[0017] In this design, the axial thickness of the main body is greater than the radial thickness of the main body. Due to the limitation of the arrangement of multiple bus bars, that is, the bus bars are stacked in the radial direction of the skeleton, the bus bars occupy more space in the radial direction. At this time, on the basis of meeting the current density requirements, in order to save the radial space of the skeleton, the axial thickness of the main body is increased to ensure the bus bar's current density carrying capacity.

[0018] In a possible design, further, the busbar also includes connecting parts, which are respectively arranged at the ends of the main body, and the connecting parts are used to connect the windings of the motor.

[0019] In this design, the busbar also includes a connection portion disposed on the main body, through which the ends of each winding of the plurality of windings of the motor stator can be connected, and the good electrical conductivity of the busbar is used to achieve electrical connection of the corresponding winding ends without directly connecting the corresponding winding terminals, thereby reducing the difficulty of wiring, facilitating efficient and rapid operation of the production line, and helping to improve the production efficiency of the product. Specifically, the main body includes two ends, namely, the free end of the first main body segment and the free end of the second main body segment, and the number of the connection portions is two, one connection portion is disposed at the free end of the first main body segment, and the other connection portion is disposed at the free end of the second main body segment.

[0020] In a possible design, further, the connecting part includes at least one sub-connecting part, each of the at least one sub-connecting part includes a connecting section and an extension section, the connecting section is arranged on the main body of the busbar and extends along the axial direction of the motor; the extension section is directly or indirectly connected to the connecting section, the free end of the extension section is bent to form an assembly area, and the winding of the motor extends into the assembly area and is connected to the extension section.

[0021] In this design, each sub-connection portion includes an axially extending connection segment and an extension segment connected to the connection segment. The free end of the extension segment is bent to form an assembly area, which can facilitate the winding end to quickly extend into the assembly area, and is also conducive to increasing the space for welding operations, reducing the difficulty of welding operations, so that the winding end can be better welded to the connection portion. Furthermore, the projection of the extension segment on the axial end face of the skeleton is U-shaped. Specifically, the number of sub-connections is an even number, and the number of sub-connections on a busbar is at least two, and increases in even multiples, that is, the number of sub-connections on a busbar can be 2, 4, etc. The number of sub-connections on a busbar can be determined according to the number of poles of the motor, and can be specifically 12 or 16.

[0022] In a possible design, further, the connecting portion also includes a transition section, the transition section is arranged between the connecting section and the extension section, and the transition section extends along the circumference of the skeleton.

[0023] In this design, the connecting part also includes a transition section, and the transition section is connected between the connecting section and the extension section. The transition section extends along the circumference of the skeleton. By setting the transition section, it is possible to avoid the distance between two adjacent sub-connecting parts being too small to hinder the welding operation between the winding end and the extension section. The distance between adjacent sub-connecting parts can be adjusted through the transition section, so that after multiple bus bars are assembled, the multiple sub-connecting parts are evenly arranged on the skeleton.

[0024] In a possible design, further, there are multiple sub-connecting parts, and the extension directions of the transition sections in adjacent sub-connecting parts among the multiple sub-connecting parts are opposite.

[0025] In this design, there are multiple sub-connections. Since one busbar includes two connections and one connection includes two sub-connections, one busbar has four sub-connections, and two sub-connections are located at the free end of the first main section, and the other two connections are located at the free end of the second main section. Among the multiple sub-connections, the extension directions of the transition sections in two adjacent sub-connections are opposite, that is, the circumferential extension directions of the transition sections in the two adjacent sub-connections are opposite, one extends counterclockwise and the other extends clockwise. On the one hand, it can reduce the difficulty of stamping and forming, and on the other hand, it can also make multiple sub-connections on a busbar evenly arranged. Specifically, when a busbar includes three busbars and a busbar includes four sub-connections, a busbar includes 12 sub-connections. By making the extension directions of the transition sections in adjacent sub-connections opposite, it can ensure that the 12 sub-connections are evenly arranged on the skeleton, which is convenient for connecting the winding end with the sub-connection and reduces the difficulty of welding operation.

[0026] In a possible design, the busbar further includes a mounting portion, which is arranged on the main body away from the connecting portion, and is used to connect to the wiring terminals of the motor.

[0027] In this design, the busbar also includes a mounting portion, which is arranged on the main body away from the connecting portion. The mounting portion is used to connect the wiring terminals of the motor. A mounting portion for connecting the wiring terminals is separately provided to ensure that the connection position of the wiring terminals is accurate. Specifically, the number of mounting portions is 3. The 3 mounting portions are arranged on the main body at intervals. A suitable mounting portion is selected for connection according to the position of the wiring terminals in the motor. That is, not every mounting portion among the multiple mounting portions is used to connect the wiring terminals.

[0028] In a possible design, further, the mounting portion and the connecting portion are arranged on the same side of the main body portion in the axial direction; the mounting portion is arranged on the main body portion and is located between the two connecting portions.

[0029] In this design, the mounting portion and the connecting portion are arranged on the same side of the main body in the axial direction, which can simplify the difficulty of stamping the busbar on the one hand, and can also simplify the structure of the skeleton matched with the busbar on the other hand.

[0030] In a possible design, further, after extending in the axial direction, the mounting portion bends and extends in a first direction away from the central axis of the motor.

[0031] In this design, the mounting portion is extended axially and bent away from the central axis of the motor, so that the free end of the mounting portion can extend toward the outside of the frame, thereby facilitating the connection of the motor's wiring terminals to the mounting portion. In other words, the wiring terminals do not need to extend into the frame to connect with the mounting portion, which can reduce the difficulty of wiring, facilitate efficient and fast operation of the production line, and improve product production efficiency.

[0032] In a possible design, further, the free end of the mounting portion extends along the axial direction of the motor to form a mounting surface, and the mounting surface can be connected to a connection terminal of the motor.

[0033] In this design, the mounting portion first extends axially, then bends in a direction away from the central axis of the motor, and finally the free end of the mounting portion can continue to extend axially along the motor and form a mounting surface. The mounting surface can be connected to the terminal, thereby increasing the contact area between the terminal and the mounting portion, improving the connection strength and stability of the terminal, and reducing the probability of deformation of the terminal.

[0034] In a possible design, further, the mounting portion includes a first mounting portion, the first mounting portion is connected to the first main body section of the main body; and a second mounting portion, the second mounting portion is connected to the second main body section of the main body, and the extension length of the first mounting portion in the first direction is smaller than the extension length of the second mounting portion in the first direction.

[0035] In this design, the mounting portion includes a first mounting portion and a second mounting portion, the first mounting portion is connected to the first main body section, and the second mounting portion is connected to the second main body section, that is, the distance between the first mounting portion and the central axis is greater than the distance between the second mounting portion and the central axis. In order to make the outer wall surfaces of the first mounting portion and the second mounting portion located in the same arc surface, the extension length of the first mounting portion in the first direction can be made smaller than the extension length of the second mounting portion in the first direction. At this time, the mounting surfaces on the first mounting portion and the second mounting portion for connecting with the wiring terminal are both located in the same arc surface, thereby facilitating the assembly of the wiring terminal. Specifically, the number of the first mounting portions is two, and the number of the second mounting portions is one.

[0036] In a possible design, further, there are multiple sub-connecting parts, and two sub-connecting parts located on the first main section of the main body form a gap with part of the main body; the second mounting part in the first busbar can extend into a gap on the second busbar.

[0037] In this design, the two sub-connecting parts located on the first main section of the main body and part of the main body form a gap, that is, the connecting part located on the first main section is provided with a gap, and the gap is used to avoid the second mounting part in the adjacent bus bar, thereby realizing a reasonable arrangement between multiple bus bars.

[0038] Furthermore, a gap may be provided between the two sub-connecting portions on the second main body section of the main body, thereby reducing the weight of the busbar.

[0039] In a possible design, further, the width of the notch in the circumferential direction of the skeleton is greater than the width of the second mounting portion in the circumferential direction of the skeleton.

[0040] In this design, the width of the notch in the circumferential direction of the skeleton is greater than the width of the second mounting portion in the circumferential direction, thereby enabling the second mounting portion to pass smoothly through the notch, thereby facilitating electrical connection between the second mounting portion and the terminal, thereby avoiding the second mounting portion on one busbar from contacting the connecting portion on an adjacent busbar and causing a short circuit.

[0041] In a possible design, further, the assembly portion is an assembly groove, the assembly groove is arranged on the frame, and the main body is installed in the assembly groove.

[0042] In this design, the frame is provided with an assembly groove, and part of the busbar is installed in the assembly groove. The assembly groove is provided to facilitate the positioning and installation of the busbar, and the operation is convenient and quick. Specifically, the main body of the busbar is located in the assembly groove.

[0043] According to a second aspect of the present invention, there is provided a motor comprising a busbar provided by any one of the above designs.

[0044] The motor provided by the present invention includes the bus provided by any of the above designs, and therefore has all the beneficial effects of the bus, which will not be described in detail here.

[0045] Furthermore, the motor also includes a casing, the bus is arranged in the casing, and the motor also includes a stator frame, the stator frame is connected to one side of the bus in an axial direction, and the winding arranged on the stator frame can be connected to the connecting part of the bus.

[0046] In a possible design, the motor further includes a control component, which is arranged on the other side of the busbar along the axial direction, and the control component has a controller; and a wiring terminal, which is connected between the mounting portion and the controller.

[0047] Furthermore, the terminal is bent, and the terminal includes a first wiring segment and a second wiring segment, the first wiring segment can be connected to the mounting portion and extend along the axial direction of the frame, the second wiring segment is connected to the first wiring segment and bent, and the free end of the second wiring segment continues to extend along the axial direction. The first wiring segment can increase the contact area between the terminal and the mounting portion, improve the connection strength and stability of the terminal, and reduce the probability of deformation of the terminal.

[0048] Furthermore, the connection terminals are connected to the busbar by resistance welding, and of course, they can also be connected by other welding methods such as ultrasonic welding or other fixed connection methods. Optionally, the number of the connection terminals is three.

[0049] According to a third aspect of the present invention, there is provided a water pump comprising a motor provided by any one of the above designs.

[0050] The water pump provided by the present invention includes the motor provided by any of the above designs, and therefore has all the beneficial effects of the motor, which will not be described in detail here.

[0051] Furthermore, the water pump also includes a pump casing, which is fixedly connected to the casing of the motor.

[0052] According to a fourth aspect of the present invention, a vehicle is provided, comprising a water pump provided by any of the above designs, the vehicle comprising a vehicle body, and the water pump is installed in the vehicle body. It is worth noting that the vehicle can be a traditional fuel vehicle or a new energy vehicle. Among them, new energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc.

[0053] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0055] Figure 1 A schematic diagram of the structure of a bus bar according to an embodiment of the present invention is shown;

[0056] Figure 2 A top view of a busbar according to an embodiment of the present invention is shown;

[0057] Figure 3 A schematic diagram of an assembly structure of multiple bus bars in a bus bar according to an embodiment of the present invention is shown;

[0058] Figure 4 A top view of a plurality of bus bars in a bus bar according to an embodiment of the present invention is shown;

[0059] Figure 5 A side view of a plurality of bus bars in a busbar according to one embodiment of the present invention is shown;

[0060] Figure 6 A schematic diagram of the structure of a bus bar in a bus bar according to an embodiment of the present invention is shown;

[0061] Figure 7 A top view of a bus bar in a busbar according to an embodiment of the present invention is shown;

[0062] Figure 8 A schematic diagram of the structure of a motor according to an embodiment of the present invention is shown;

[0063] Fig. 9 Shows Figure 8 A partial enlarged view of a motor at position A according to an embodiment of the present invention is shown;

[0064] Fig.10 A schematic diagram of the structure of a water pump according to an embodiment of the present invention is shown;

[0065] Fig.11 Another structural schematic diagram of a water pump according to an embodiment of the present invention is shown;

[0066] Fig.12 A schematic structural diagram of a vehicle according to an embodiment of the present invention is shown.

[0067] in, Figures 1 to 12 The corresponding relationship between the reference numerals and the component names is as follows:

[0068] 1 busbar,

[0069] 10 skeleton, 101 assembly part,

[0070] 20 bus bar, 20a first bus bar, 20b second bus bar,

[0071] 21 main body, 211 first main body section, 212 second main body section, 213 bent section, 21a main body of the first bus bar, 211a first main body section of the first bus bar, 212a second main body section of the first bus bar, 213a bent section of the first bus bar, 21b main body of the second bus bar, 211b first main body section of the second bus bar, 212b second main body section of the second bus bar, 213b bent section of the second bus bar,

[0072] 22 connecting portion, 221 sub-connecting portion, 222 connecting section, 223 transition section, 224 extension section, 225 notch,

[0073] 23 mounting portion, 231 first mounting portion, 232 second mounting portion,

[0074] 4 motor, 41 housing, 42 stator frame, 43 winding, 31 control component, 31a controller, 32 terminal,

[0075] 5 water pump, 51 pump housing,

[0076] 6 vehicles, 61 bodies. DETAILED DESCRIPTION

[0077] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0078] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0079] Refer to the following Figures 1 to 12 A busbar 1 , a motor 4 , a water pump 5 and a vehicle 6 according to some embodiments of the present invention are described.

[0080] Embodiment 1

[0081] According to a first aspect of the present invention, there is provided a busbar 1 for use in a motor 4, such as Figure 1 and Figure 2 As shown, the busbar 1 includes a skeleton 10 and a busbar 20. The skeleton 10 is provided with an assembly portion 101. The busbar 20 is arranged on the skeleton 10. The number of the busbars 20 is at least three. The structures of any two of the at least three busbars 20 are the same. The busbar 20 includes a main body 21, and the main body 21 is arranged on the assembly portion 101.

[0082] The busbar 1 provided by the present invention includes a skeleton 10 and a busbar 20, and the busbar 20 is arranged on the skeleton 10. Among them, the skeleton 10 is an insulating part, and the skeleton 10 is annular. The skeleton 10 can be formed by injection molding. The skeleton 10 is used to provide support for the busbar 20 and isolate the adjacent busbars 20 among at least three busbars 20, so as to play the role of electrical insulation. The busbar 20 is a conductor, and the busbar 20 is used to connect the ends of the windings 43 that need to be connected together among the multiple windings 43 of the stator of the motor 4, thereby realizing the electrical connection of the ends of the multiple windings 43 and realizing the bus function. In the present invention, by making the structure of the busbar 20 the same, the number of molds for preparing the busbar 20 can be reduced, the processing difficulty of the busbar 20 can be reduced, the production efficiency can be improved, the production cost of the busbar 1 can be reduced, and the competitiveness of the product can be effectively improved. Specifically, at least three busbars 20 include a U-phase busbar 20, a V-phase busbar 20, and a W-phase busbar 20, that is, the shapes and sizes of the U-phase busbar 20, the V-phase busbar 20, and the W-phase busbar 20 are completely consistent. Furthermore, the material of the busbar 20 is copper, which has good electrical conductivity and is relatively cheap. In addition, copper has the advantages of being easy to stamp and having sufficient hardness. Specifically, the busbar 20 includes a main body 21, and the main body 21 is arranged on the skeleton 10 through an assembly part 101. The assembly part 101 can be an assembly groove, and the main body 21 is embedded in the assembly groove, which is simple to assemble. Of course, the assembly part 101 can also be a connecting structure, and the main body can cooperate with the connecting structure to realize that the busbar 20 is located on the skeleton 10.

[0083] Furthermore, if Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the busbar 20 includes a main body 21, which is arranged on the skeleton 10, and the main body 21 includes a first main section 211, a second main section 212 and a bending section 213, wherein the distance between any point on the second main section 212 and the central axis of the motor 4 is smaller than the distance between any point on the first main section 211 and the central axis of the motor 4; the bending section 213 is connected between the first main section 211 and the second main section 212.

[0084] In this embodiment, the main body 21 is divided into a first main body section 211, a second main body section 212 and a bending section 213, wherein the distance between any point on the first main body section 211 and the central axis of the motor 4 is greater than the distance between any point on the second main body section 212 and the central axis of the motor 4, that is, the distances between the first main body section 211 and the second main body section 212 and the central axis are not equal. At this time, the first main body section 211 and the second main body section 212 are connected by the bending section 213. When there are multiple busbars 20 in the busbar 1, the first main body section 211 and the second main body section 212 with different sizes in the radial direction can facilitate the arrangement of multiple busbars 20 of the same structure on the skeleton 10. Specifically, the first main body section 211 is a first arc section, and the second main body section 212 is a second arc section. The first arc section and the second arc section have the same center, and the radius of the first arc section is greater than the radius of the second arc section, that is, the first arc section and the second arc section are concentric but have different diameters. The first arc segment and the second arc segment are not complete rings, and the first arc segment and the second arc segment can be formed by bending or other methods.

[0085] Furthermore, if Figure 3 and Figure 4 As shown, on a plane perpendicular to the axis of the skeleton 10, the main body 21 of all the busbars 20 can form two incomplete circular rings. Specifically, the first main body segments 211 in the main body 21 of all the busbars 20 can form an incomplete first circular ring, and the second main body segments 212 in the main body 21 of all the busbars 20 can form an incomplete second circular ring, wherein the radius of the first circular ring is greater than the radius of the second circular ring.

[0086] Furthermore, by setting a bending section 213 between the first main section 211 and the second main section 212, the first main section 211 and the second main section 212 in the plurality of busbars 20 can be arranged in a staggered manner in the radial direction of the skeleton 10 through the bending section 213, that is, the plurality of first main sections 211 in the plurality of busbars 20 can form a ring with a larger radius, and the plurality of second main sections 212 in the plurality of busbars 20 can form a ring with a smaller radius. At this time, the outer contour shape of the overall structure formed by the mutual arrangement of the plurality of busbars 20 is a regular circle. In this way, the difficulty of preparing the skeleton 10 for assembling the busbars 20 can be reduced, that is, the skeleton 10 can also be made into a regular shape, reducing the preparation cost of the skeleton 10, so that the overall structure of the busbar 1 can be applied to the existing motor 4, and has strong versatility.

[0087] Furthermore, if Figure 3 and Figure 4As shown, at least three busbars 20 include adjacent first busbar 20a and second busbar 20b, and the first main section 211a of the first busbar 20a is located on the side of the second main section 212b of the second busbar 20b away from the central axis of the motor 4.

[0088] In this embodiment, the first busbar 20a includes a main body 21a, a first main body section 211a, a second main body section 212a and a bending section 213a, and the second busbar 20b includes a main body 21b, a first main body section 211b, a second main body section 212b and a bending section 213b. At least three busbars 20 include adjacent first busbars 20a and second busbars 20b, wherein the main body 21 includes a first side close to the central axis of the motor 4 and a second side away from the central axis of the motor 4. The connection method of two adjacent busbars 20 is as follows: the first main body section 211a of the first busbar 20a is located on the second side of the second main body section 212b of the second busbar 20b, that is, any two adjacent busbars 20 of the at least three busbars 20 meet the above arrangement method. Therefore, when multiple busbars 20 with the same structure are arranged, interference between the busbars 20 will be avoided according to this arrangement method. In addition, this arrangement can improve the density of the busbars 20 and further reduce the size of the product.

[0089] Furthermore, if Figure 5 As shown, the axial thickness of the main body portion 21 is greater than the radial thickness of the main body portion 21 .

[0090] In this embodiment, the axial thickness of the main body 21 is greater than the radial thickness of the main body 21. Due to the limitation of the arrangement of multiple bus bars 20, that is, the bus bars 20 are stacked in the radial direction of the skeleton 10, the bus bars 20 occupy more space in the radial direction. At this time, on the basis of meeting the current density requirements, in order to save the radial space of the skeleton 10, the axial thickness of the main body 21 is increased to ensure the bus bar 20's carrying capacity for current density.

[0091] Embodiment 2

[0092] Different from the above-mentioned first embodiment, this embodiment further defines that the bus bar 20 also includes a connecting portion 22, such as Figure 6 and Figure 7 As shown, the connection parts 22 are respectively arranged at the ends of the main body part 21 , and the connection parts 22 are used to connect the windings 43 of the motor 4 .

[0093] In this embodiment, the busbar 20 also includes a connecting portion 22 disposed on the main body 21, through which the ends of each winding 43 of the plurality of windings 43 of the stator of the motor 4 can be connected, and the good electrical conductivity of the busbar 20 is used to achieve electrical connection of the corresponding winding 43 ends, without directly connecting the corresponding winding 43 terminals, thereby reducing the wiring difficulty, facilitating efficient and fast operation of the production line, and helping to improve the production efficiency of the product. Specifically, the main body 21 includes two ends, namely, the free end of the first main body segment 211 and the free end of the second main body segment 212, and the number of the connecting portions 22 is two, one connecting portion 22 is disposed at the free end of the first main body segment 211, and the other connecting portion 22 is disposed at the free end of the second main body segment 212.

[0094] Furthermore, if Figure 6 and Figure 7 As shown, the connecting portion 22 includes at least one sub-connecting portion 221, and each of the at least one sub-connecting portion 221 includes a connecting section 222 and an extending section 224. The connecting section 222 is arranged on the main body 21 of the busbar 20 and extends along the axial direction of the motor 4; the extending section 224 is directly or indirectly connected to the connecting section 222, and the free end of the extending section 224 is bent to form an assembly area, and the winding 43 of the motor 4 extends into the assembly area and is connected to the extending section 224.

[0095] In this embodiment, each sub-connection portion 221 includes an axially extending connection section 222, and an extension section 224 connected to the connection section 222. The free end of the extension section 224 is bent to form an assembly area, which can facilitate the end of the winding 43 to quickly extend into the assembly area, and is also conducive to increasing the space for welding operations, reducing the difficulty of welding operations, so that the end of the winding 43 can be better welded to the connection portion 22. Further, the projection of the extension section 224 on the axial end surface of the skeleton 10 is U-shaped. Specifically, the number of sub-connection portions 221 is an even number, and the number of sub-connection portions 221 on a busbar 20 is at least two, and increases in even multiples, that is, the number of sub-connection portions 221 on a busbar 20 can be 2, 4, etc. The number of sub-connection portions 221 of a busbar 1 can be determined according to the number of poles of the motor 4, and can be specifically 12 or 16.

[0096] Furthermore, if Figure 6 and Figure 7 As shown, the connecting portion 22 further includes a transition section 223 , which is disposed between the connecting section 222 and the extending section 224 , and the transition section 223 extends along the circumference of the skeleton 10 .

[0097] In this embodiment, the connecting portion 22 also includes a transition section 223, and the transition section 223 is connected between the connecting section 222 and the extension section 224. The transition section 223 extends along the circumference of the skeleton 10. By setting the transition section 223, it is possible to avoid the distance between two adjacent sub-connecting portions 221 being too small to hinder the welding operation between the end of the winding 43 and the extension section 224. The distance between adjacent sub-connecting portions 221 can be adjusted through the transition section 223, so that after a plurality of bus bars 20 are assembled, the plurality of sub-connecting portions 221 are evenly arranged on the skeleton 10.

[0098] Furthermore, if Figure 6 and Figure 7 As shown, there are multiple sub-connection parts 221 , and the extension directions of the transition sections 223 in adjacent sub-connection parts 221 among the multiple sub-connection parts 221 are opposite.

[0099] In this embodiment, there are multiple sub-connection parts 221. Since one busbar 20 includes two connection parts 22, and one connection part 22 includes two sub-connection parts 221, one busbar 20 has four sub-connection parts 221, and two sub-connection parts 221 are located at the free end of the first main body section 211, and the other two connection parts 22 are located at the free end of the second main body section 212. Among them, the extension directions of the transition sections 223 in two adjacent sub-connection parts 221 among the multiple sub-connection parts 221 are opposite, that is, the circumferential extension directions of the transition sections 223 in two adjacent sub-connection parts 221 are opposite, one extends counterclockwise and the other extends clockwise, which can reduce the difficulty of stamping and forming on the one hand, and can also make the multiple sub-connection parts 221 on one busbar 1 evenly arranged on the other hand. Specifically, when a busbar 1 includes three busbars 20, and a busbar 20 includes four sub-connections 221, then a busbar 1 includes 12 sub-connections 221. By making the extension directions of the transition sections 223 in adjacent sub-connections 221 opposite, it can be ensured that the 12 sub-connections 221 are evenly spaced and arranged on the skeleton 10, which facilitates the connection between the end of the winding 43 and the sub-connection 221 and reduces the difficulty of the welding operation.

[0100] Embodiment 3

[0101] Different from the above two embodiments, Figure 6 and Figure 7 As shown, in this embodiment, the busbar 1 further includes a mounting portion 23 . The mounting portion 23 is arranged on the main body 21 away from the connecting portion 22 . The mounting portion 23 is used to connect to the connecting terminal 32 of the motor 4 .

[0102] In this embodiment, the busbar 1 further includes a mounting portion 23, which is arranged on the main body 21 away from the connecting portion 22. The mounting portion 23 is used to connect the wiring terminal 32 of the motor 4. The mounting portion 23 is separately provided for the wiring terminal 32 for connection, so that the connection position of the wiring terminal 32 can be ensured to be accurate. Specifically, the number of the mounting portions 23 is 3. The 3 mounting portions 23 are arranged at intervals on the main body 21. The appropriate mounting portion 23 is selected for connection according to the position of the wiring terminal 32 in the motor 4. That is, not every mounting portion 23 among the multiple mounting portions 23 is used to connect the wiring terminal 32.

[0103] Furthermore, if Figures 5 to 7 As shown, the mounting portion 23 and the connecting portion 22 are arranged on the same side of the main body 21 in the axial direction; the mounting portion 23 is arranged on the main body 21 and is located between the two connecting portions 22 .

[0104] In this embodiment, the mounting portion 23 and the connecting portion 22 are arranged on the same side of the main body 21 in the axial direction, which can simplify the difficulty of stamping the busbar 20 on the one hand, and also simplify the structure of the skeleton 10 matched with the busbar 20 on the other hand.

[0105] Furthermore, if Figure 6 and Figure 7 As shown, the mounting portion 23 extends along the axial direction and then bends and extends in a first direction away from the central axis of the motor 4 .

[0106] In this embodiment, the mounting portion 23 is extended in the axial direction and bent away from the central axis of the motor 4, so that the free end of the mounting portion 23 can extend toward the outside of the frame 10, thereby facilitating the connection of the wiring terminal 32 of the motor 4 with the mounting portion 23. In other words, the wiring terminal 32 does not need to extend into the frame 10 to connect with the mounting portion 23, which can reduce the difficulty of wiring, facilitate efficient and fast operation of the production line, and improve the production efficiency of the product.

[0107] Furthermore, the free end of the mounting portion 23 extends along the axial direction of the motor 4 to form a mounting surface, and the mounting surface can be connected to the wiring terminal 32 of the motor 4 .

[0108] In this embodiment, the mounting portion 23 first extends axially, then bends in a direction away from the central axis of the motor 4, and finally the free end of the mounting portion 23 can continue to extend axially along the motor 4 and form a mounting surface, which can be connected to the terminal 32, thereby increasing the contact area between the terminal 32 and the mounting portion 23, improving the connection strength and stability of the terminal 32, and reducing the probability of deformation of the terminal 32.

[0109] Furthermore, if Figure 6 and Figure 7As shown, the mounting portion 23 includes a first mounting portion 231, which is connected to the first main body section 211 of the main body portion 21; and a second mounting portion 232, which is connected to the second main body section 212 of the main body portion 21, and the extension length of the first mounting portion 231 in the first direction is less than the extension length of the second mounting portion 232 in the first direction.

[0110] In this embodiment, the mounting portion 23 includes a first mounting portion 231 and a second mounting portion 232. The first mounting portion 231 is connected to the first main body section 211, and the second mounting portion 232 is connected to the second main body section 212, that is, the distance between the first mounting portion 231 and the central axis is greater than the distance between the second mounting portion 232 and the central axis. In order to make the outer wall surfaces of the first mounting portion 231 and the second mounting portion 232 located in the same arc surface, the extension length of the first mounting portion 231 in the first direction can be made smaller than the extension length of the second mounting portion 232 in the first direction. At this time, the mounting surfaces of the first mounting portion 231 and the second mounting portion 232 for connecting with the wiring terminal 32 are both located in the same arc surface, thereby facilitating the assembly of the wiring terminal 32. Specifically, there are two first mounting portions 231 and one second mounting portion 232.

[0111] Furthermore, if Figure 6 and Figure 7 As shown, there are multiple sub-connecting parts 221, and two sub-connecting parts 221 located on the first main section 211 of the main body 21 and part of the main body 21 form a gap 225; the second mounting part 232 in the first bus bar 20a can extend into a gap 225 on the second bus bar 20b.

[0112] In this embodiment, the two sub-connecting portions 221 located on the first main body section 211 of the main body 21 and part of the main body 21 form a gap 225, that is, a gap 225 is provided on the connecting portion 22 located on the first main body section 211, and the gap 225 is used to avoid the second mounting portion 232 in the adjacent bus bar 20, thereby realizing a reasonable arrangement between multiple bus bars 20.

[0113] Furthermore, a notch 225 may be provided between the two sub-connection portions 221 on the second main body segment 212 of the main body portion 21 , thereby reducing the weight of the busbar 20 .

[0114] Furthermore, the width of the notch 225 in the circumferential direction of the frame 10 is greater than the width of the second mounting portion 232 in the circumferential direction of the frame 10 .

[0115] In this embodiment, the width of the notch 225 in the circumferential direction of the skeleton 10 is greater than the width of the second mounting portion 232 in the circumferential direction, so that the second mounting portion 232 can smoothly pass through the notch 225, thereby facilitating the electrical connection between the second mounting portion 232 and the terminal 32, thereby avoiding the second mounting portion 232 on one busbar 20 from contacting the connecting portion 22 on the adjacent busbar 20 and causing a short circuit.

[0116] Furthermore, the assembly portion 101 is an assembly groove, which is provided on the frame 10 , and the main body 21 is installed in the assembly groove.

[0117] In this embodiment, the frame 10 is provided with an assembly groove, and part of the busbar 20 is installed in the assembly groove. The assembly groove can facilitate the positioning and installation of the busbar 20, and the operation is convenient and fast. Specifically, the main body 21 of the busbar 20 is located in the assembly groove.

[0118] Embodiment 4

[0119] According to a second aspect of the present invention, there is provided an electric motor 4 comprising the busbar 1 provided by any one of the above designs.

[0120] like Figure 8 and Fig. 9 As shown, the motor 4 provided by the present invention includes the busbar 1 provided by any of the above designs, and therefore has all the beneficial effects of the busbar 1, which will not be described in detail here.

[0121] Furthermore, the motor 4 also includes a housing 41, the bus 1 is arranged in the housing 41, and the motor 4 also includes a stator frame 42, the stator frame 42 is connected to one axial side of the bus 1, and the winding 43 arranged on the stator frame 42 can be connected to the connecting portion 22 of the bus 1.

[0122] In a possible design, the motor 4 further includes a control component 31, which is arranged on the other side of the bus 1 along the axial direction, and the control component 31 has a controller 31a; a terminal 32, and the terminal 32 is connected between the mounting portion 23 and the controller 31a.

[0123] Furthermore, the terminal block 32 is bent, and includes a first wiring segment and a second wiring segment. The first wiring segment can be connected to the mounting portion 23 and extends along the axial direction of the frame 10. The second wiring segment is connected to the first wiring segment and bent, and the free end of the second wiring segment continues to extend along the axial direction. The first wiring segment can increase the contact area between the terminal block 32 and the mounting portion 23, improve the connection strength and stability of the terminal block 32, and reduce the probability of deformation of the terminal block 32.

[0124] Furthermore, the connection terminal 32 is connected to the busbar 1 by resistance welding, and of course, other welding methods such as ultrasonic welding or other fixed connection methods can also be used. Optionally, the number of the connection terminals 32 is three.

[0125] Embodiment 5

[0126] According to a third aspect of the present invention, there is provided a water pump 5, comprising a motor 4 provided by any of the above designs.

[0127] like Fig.10 and Fig.11 As shown, the water pump 5 provided by the present invention includes the motor 4 provided by any of the above designs, and therefore has all the beneficial effects of the motor 4, which will not be repeated here.

[0128] Furthermore, the water pump 5 also includes a pump casing 51 , and the pump casing 51 is fixedly connected to the casing 41 of the motor 4 .

[0129] Embodiment 6

[0130] According to a fourth aspect of the present invention, there is provided a vehicle 6, such as Fig.12 As shown, the vehicle 6 includes the water pump 5 provided by any of the above designs, and the vehicle 6 includes a vehicle body 61 , in which the water pump 5 is installed.

[0131] In the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0132] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0133] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A busbar for a motor, characterized in that: The busbar comprises: A frame, wherein a mounting portion is provided on the frame; A bus bar, wherein the bus bar is arranged on the frame, the number of the bus bars is at least three, and any two of the at least three bus bars have the same structure; Wherein, the busbar comprises a main body portion, and the main body portion is arranged on the mounting portion; The bus bar further comprises: Connecting parts, respectively arranged at the ends of the main body, and used for connecting the windings of the motor; The busbar further comprises: The mounting portion is arranged on the main body, avoiding the connecting portion. The mounting portion is used to connect the wiring terminal of the motor. The mounting portion extends axially and bends and extends in a first direction away from the central axis of the motor.

2. The busbar according to claim 1, characterized in that: The main body comprises: The first main body paragraph; a second main body segment, wherein a distance between any point on the second main body segment and the central axis of the motor is smaller than a distance between any point on the first main body segment and the central axis of the motor; The bending section is connected between the first main body section and the second main body section.

3. The busbar according to claim 2, characterized in that: The at least three bus bars include adjacent first and second bus bars; The first main body section of the first bus bar is located on a side of the second main body section of the second bus bar that is away from a central axis of the motor.

4. The busbar according to claim 2, characterized in that: The axial thickness of the main body portion is greater than the radial thickness of the main body portion.

5. The busbar according to any one of claims 1 to 4, characterized in that: The connection portion includes at least one sub-connection portion, and each of the at least one sub-connection portion includes: A connecting section, which is arranged on the main body of the bus bar and extends along the axial direction of the motor; An extension section, directly or indirectly connected to the connecting section, wherein a free end of the extension section is bent to form an assembly area, and the winding of the motor extends into the assembly area and is connected to the extension section; A transition section is arranged between the connecting section and the extending section, and the transition section extends along the circumference of the skeleton.

6. The busbar according to claim 5, characterized in that: There are multiple sub-connecting parts, and the extension directions of the transition sections in adjacent sub-connecting parts among the multiple sub-connecting parts are opposite.

7. The busbar according to claim 5, characterized in that: The mounting portion and the connecting portion are arranged on the same side of the main body portion in the axial direction; The mounting portion is arranged on the main body and is located between the two connecting portions.

8. The busbar according to claim 5, characterized in that: The free end of the mounting portion extends along the axial direction of the motor to form a mounting surface, and the mounting surface can be connected to a connection terminal of the motor.

9. The busbar according to claim 5, characterized in that: The installation part comprises: a first mounting portion, the first mounting portion being connected to a first main body section of the main body; A second mounting portion, wherein the second mounting portion is connected to the second main body section of the main body, and an extension length of the first mounting portion in the first direction is smaller than an extension length of the second mounting portion in the first direction.

10. The busbar according to claim 9, characterized in that: There are multiple sub-connecting parts, and two of the sub-connecting parts located on the first main body section of the main body form a gap with part of the main body; The at least three bus bars include adjacent first and second bus bars; The second mounting portion in the first bus bar can extend into one of the notches on the second bus bar.

11. The busbar according to claim 10, characterized in that: The width of the notch in the circumferential direction of the frame is greater than the width of the second mounting portion in the circumferential direction of the frame.

12. The busbar according to any one of claims 1 to 4, characterized in that: The assembly portion is an assembly groove, the assembly groove is arranged on the frame, and the main body is installed in the assembly groove.

13. A motor, characterized in that: include: chassis; The busbar according to any one of claims 1 to 12, wherein the busbar is arranged in the housing; as well as A stator frame, one end of which is connected to one side of the busbar in the axial direction, and a winding is provided on the stator frame, and the winding is connected to a connecting portion of the busbar.

14. The motor according to claim 13, characterized in that The motor also includes: A control component, arranged on the other side of the busbar along the axial direction, the control component having a controller; A connection terminal is connected between the mounting portion of the busbar and the controller.

15. A water pump, characterized in that: include: The motor according to claim 13 or 14; as well as A pump casing is fixedly connected to a casing of the motor.

16. A vehicle, characterized in that: include: Vehicle body; and The water pump according to claim 15, wherein the water pump is installed in the vehicle body.

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