阅读说明：本技术 汇流排、电机、水泵和车辆 (Busbar, motor, water pump and vehicle ) 是由 王志强 龚杰 徐浩扬 葛笑 于 2020-06-09 设计创作，主要内容包括：本发明提供了一种汇流排、电机、水泵和车辆,汇流排包括骨架和汇流条,骨架上设有装配部,汇流条设置在骨架上,汇流条的数量为至少三个,至少三个汇流条中任意两个汇流条的结构相同,汇流条包括主体部,主体部设置在装配部上。本发明中通过令汇流条的结构相同,进而可以减少制备汇流条的模具数量,降低汇流条的加工难度,提高生产效率,降低汇流排的生产成本,有效提升产品的竞争力。(The invention provides a bus bar, a motor, a water pump and a vehicle. According to the invention, the bus bars are identical in structure, so that the number of dies for preparing the bus bars can be reduced, the processing difficulty of the bus bars is reduced, the production efficiency is improved, the production cost of the bus bars is reduced, and the competitiveness of products is effectively improved.)

1. A busbar for an electric machine, the busbar comprising:

the framework is provided with an assembling part;

the bus bars are arranged on the framework, the number of the bus bars is at least three, and any two bus bars in the at least three bus bars have the same structure;

wherein the bus bar includes a main body portion provided on the fitting portion.

2. The busbar according to claim 1,

the main body portion includes:

a first body segment;

a second main body section, a distance between any point on the second main body section and a central axis of the motor being smaller than a distance between any point on the first main body section and the central axis of the motor;

a bending section connected between the first main body section and the second main body section.

3. The busbar according to claim 2,

at least three of the bus bars include adjacent first and second bus bars;

the first main body segment of the first bus bar is located on a side of the second main body segment of the second bus bar that faces away from a central axis of the electric machine.

4. The busbar according to claim 2,

the axial thickness of the body portion is greater than the radial thickness of the body portion.

5. The busbar according to any one of claims 1 to 4, further comprising:

the connecting parts are respectively arranged at the end parts of the main body part and are used for connecting a winding of the motor;

the connecting portion includes at least one sub-connecting portion, each of the at least one sub-connecting portion includes:

a connection section provided on the main body portion of the bus bar and extending in an axial direction of the motor;

the extension section is directly or indirectly connected with the connection section, the free end of the extension section is bent to form an assembly area, and a winding of the motor extends into the assembly area to be connected with the extension section;

the transition section is arranged between the connecting section and the extending section, and the transition section extends along the circumferential direction of the framework.

6. The bus bar of claim 5,

the number of the sub-connecting parts is multiple, and the extending directions of the transition sections in the adjacent sub-connecting parts in the plurality of sub-connecting parts are opposite.

7. The buss bar of claim 5, further comprising:

the installation department avoids connecting portion arranges on the main part, the installation department is used for connecting the binding post of motor.

8. The bus bar of claim 7,

the mounting part and the connecting part are arranged on the same side of the main body part along the axial direction;

the mounting portion is provided on the main body portion and between the two connecting portions.

9. The bus bar of claim 7,

the mounting portion extends in the axial direction and bends and extends towards a first direction deviating from the central axis of the motor.

10. The bus bar of claim 9,

the free end of installation department is followed the axial extension of motor is in order to form the installation face, the installation face can with the binding post of motor links to each other.

11. The buss bar of claim 9, wherein the mounting portion comprises:

a first mounting portion connected to a first body section of the body portion;

the second installation part is connected to a second main body section of the main body part, and the extension length of the first installation part in the first direction is smaller than that of the second installation part in the first direction.

12. The bus bar of claim 11,

the number of the sub-connecting parts is multiple, and the two sub-connecting parts positioned on the first main body section of the main body part and part of the main body part form a gap;

at least three of the bus bars include adjacent first and second bus bars;

the second mounting portion of the first busbar is capable of extending into one of the notches in the second busbar.

13. The bus bar of claim 12,

the breach is in ascending width in skeleton circumference is greater than the second installation department is in ascending width in skeleton circumference.

14. The busbar according to any one of claims 1 to 4, wherein the fitting portion is a fitting groove provided on the skeleton, the main body portion being fitted in the fitting groove.

15. An electric machine, comprising:

a housing;

the busbar of any of claims 1 to 14, disposed within the enclosure; and

and one end of the stator frame is connected to one axial side of the bus bar, and the stator frame is provided with a winding which is connected with the connecting part of the bus bar.

16. The electric machine of claim 15, further comprising:

the control assembly is arranged on the other side of the bus bar in the axial direction and is provided with a controller;

and the wiring terminal is connected between the installation part of the bus bar and the controller.

17. A water pump, comprising:

the electric machine of claim 15 or 16; and

and the pump shell is fixedly connected with the shell of the motor.

18. A vehicle, characterized by comprising:

a vehicle body; and

the water pump of claim 17, mounted in the vehicle body.

Technical Field

The invention relates to the technical field of motors, in particular to a bus bar, a motor, a water pump and a vehicle.

Background

At present, a bus bar of a motor is composed of a plurality of bus bars, the bus bars are connected with a start end and an end of a winding in a stator of the motor so as to ensure normal operation of the motor, however, the structures of the plurality of bus bars which are concentrated at present are different, and a plurality of sets of dies are needed for preparing the bus bars with different structures, which directly results in increased cost of products and reduced competitiveness of the products.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the invention provides a busbar.

A second aspect of the invention provides an electric machine.

In a third aspect of the invention, a water pump is provided.

A fourth aspect of the invention is a vehicle.

In view of the above, according to a first aspect of the present invention, there is provided a bus bar for an electric machine, the bus bar including a skeleton on which a fitting portion is provided, and bus bars provided on the skeleton, the number of the bus bars being at least three, any two of the at least three bus bars being identical in structure, the bus bars including main body portions provided on the fitting portion.

The bus bar provided by the invention comprises a framework and a bus bar, wherein the bus bar is arranged on the framework. Wherein, the skeleton is the insulating part, and the skeleton is cyclic annular, and the skeleton can adopt injection moulding mode shaping, and the skeleton is arranged in providing the supporting role and keeping apart adjacent busbar among at least three busbar to the busbar, plays the effect of electrical insulation. The bus bar is a conductor, and the bus bar is used for connecting winding ends which need to be connected together in a plurality of windings of the motor stator, so that the electric connection of the winding ends is realized, and the bus function is realized. According to the invention, the bus bars are identical in structure, so that the number of dies for preparing the bus bars can be reduced, the processing difficulty of the bus bars is reduced, the production efficiency is improved, the production cost of the bus bars is reduced, and the competitiveness of products is effectively improved. Specifically, the at least three bus bars include a U-phase bus bar, a V-phase bus bar, and a W-phase bus bar, that is, the U-phase bus bar, the V-phase bus bar, and the W-phase bus bar are completely identical in shape and size. Furthermore, the bus bar is made of copper, the conductivity of the copper is good, the price is relatively low, and in addition, the copper can be easily formed by punching and has the advantage of enough hardness. Specifically, the bus bar comprises a main body part, the main body part is arranged on the framework through an assembling part, the assembling part can be an assembling groove, the main body part is embedded in the assembling groove, and the assembling is simple. Of course, the assembling portion may also be a connecting structure, and the main body portion may cooperate with the connecting structure to seat the bus bar on the skeleton.

In one possible design, further, the bus bar includes a main body portion, the main body portion is disposed on the skeleton, the main body portion includes a first main body section, a second main body section and a bending section, wherein a distance between any point on the second main body section and a central axis of the motor is smaller than a 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.

In the design, the main body part is divided into a first main body section, a second main body section and a bending section which are connected, wherein the distance between any point on the first main body section and the central axis of the motor is larger than the distance between any point on the second main body section and the central axis of the motor, namely the distances between the first main body section and the central axis of the motor are different, at the moment, the first main body section and the second main body section are connected through the bending section, and when the number of the bus bars in the bus bars is multiple, the first main body section and the second main body section with different sizes in the radial direction can facilitate the arrangement of the bus bars with the same structure on the framework. Specifically, the first main body section is a first circular arc section, the second main body section is a second circular arc section, the first circular arc section and the second circular arc section have the same circle center, and the radius of the first circular arc section is larger than that of the second circular arc section, that is, the first circular arc section and the second circular arc section are concentric and have different diameters. The first circular arc section and the second circular arc section are not complete rings, and can be formed in a bending mode and the like.

Further, the main body portions of all the bus bars can form two incomplete circular rings on a plane perpendicular to the axis of the skeleton. In particular, a first body segment in the body portions of all the bus bars can form an incomplete first ring and a second body segment in the body portions of all the bus bars can form an incomplete second ring, wherein the radius of the first ring is greater than the radius of the second ring.

Further, the bending section is arranged between the first main body section and the second main body section, so that the first main body section and the second main body section of the plurality of bus bars can be arranged in a staggered mode in the radial direction of the framework through the bending section, namely the plurality of first main body sections of the plurality of bus bars can form a ring shape with a large radius, the plurality of second main body sections of the plurality of bus bars can form a ring shape with a small radius, and at the moment, the outer contour shape of the whole structure formed by the arrangement of the plurality of bus bars is a regular circle. Can reduce the preparation degree of difficulty that is used for assembling the skeleton of busbar like this, regular shape also can be made to the skeleton promptly, reduces the preparation cost of skeleton for the overall structure of busbar can be applicable to current motor, and the commonality is stronger.

In one possible design, further, the at least three bus bars include adjacent first and second bus bars, the first body segment of the first bus bar being located on a side of the second body segment of the second bus bar facing away from the central axis of the electric machine.

In this design, the at least three bus bars include adjacent first and second bus bars, wherein the body portion includes a first side proximate the motor central axis and a second side facing away from the motor central axis. The connection of two adjacent busbars is as follows: the first main body segment of the first bus bar is located on the second side of the second main body segment of the second bus bar, that is, any two adjacent bus bars of the at least three bus bars satisfy the above arrangement. Therefore, when a plurality of bus bars having the same structure are arranged, interference between the bus bars is prevented according to the arrangement. In addition, according to the arrangement mode, the density of the bus bars can be improved, and the size of a product can be further reduced.

In one possible design, further, the axial thickness of the main body portion is greater than the radial thickness of the main body portion.

In this design, the axial thickness of main part is greater than the radial thickness of main part, owing to the limited of the mode of arranging of a plurality of busbar, the busbar is in the footpath of skeleton stack promptly, so the busbar radially takes up more space, and on the basis of satisfying the current density demand, in order to save the radial space of skeleton this moment, the bearing capacity of busbar to current density is ensured through increasing the axial thickness of main part.

In one possible design, the bus bar further includes connecting portions respectively provided at ends of the main body portion, the connecting portions being used to connect windings of the motor.

In this design, the busbar is still including setting up the connecting portion on the main part, can connect each winding head of a plurality of windings of motor stator through connecting portion to utilize the good electric conductive property of busbar in order to realize the electric connection that corresponds winding head, and need not to link to each other directly the winding wiring end that corresponds, and then reduce the wiring degree of difficulty, be convenient for produce the high-efficient quick operation of line, be favorable to improving the production efficiency of product. In particular, the body portion comprises two ends, namely a free end of the first body segment and a free end of the second body segment, the number of the connecting portions being two, one connecting portion being arranged at the free end of the first body segment and the other connecting portion being arranged at the free end of the second body segment.

In one possible design, further, the connecting portion includes at least one sub-connecting portion, each of the at least one sub-connecting portion includes a connecting section and an extending section, the connecting section is disposed on the main body portion of the bus bar and extends in an axial direction of the motor; the extension section is directly or indirectly connected with the connecting section, the free end of the extension section is bent to form an assembly area, and a winding of the motor extends into the assembly area to be connected with the extension section.

In this design, every sub-connecting portion includes axial extension's linkage segment to and the extension that links to each other with the linkage segment, and the free end of extension bends and forms the assembly area, and then can be convenient for the winding head portion stretches into the assembly area fast, also is favorable to increasing welding operation's space, reduces the welding operation degree of difficulty, makes the winding head portion weld on connecting portion better. Further, the projection of the extension section on the axial end face of the framework is U-shaped. Specifically, the number of the sub-connection portions is an even number, the number of the sub-connection portions on one bus bar is at least two, and is increased by an even number, that is, the number of the sub-connection portions on one bus bar may be 2, 4, or the like. The number of the one busbar sub-connecting portion may be determined according to the number of poles of the motor, and specifically may be 12 or 16.

In one possible design, further, the connecting portion further includes a transition section, the transition section is disposed between the connecting section and the extending section, and the transition section extends along the circumferential direction of the framework.

In this design, connecting portion still include the changeover portion, and the changeover portion is connected between linkage segment and extension, and the changeover portion extends along the circumference of skeleton, can avoid the distance undersize between two adjacent sub-connecting portions and hinder the welding operation of winding tip and extension through setting up the changeover portion, can adjust the distance between the adjacent sub-connecting portion through the changeover portion for a plurality of busbar assembly back, a plurality of sub-connecting portions are arranged on the skeleton uniformly.

In one possible design, the number of the sub-connecting portions is multiple, and the transition sections in the adjacent sub-connecting portions in the multiple sub-connecting portions extend in opposite directions.

In this design, the number of the sub-connecting portions is plural, and since one bus bar includes two connecting portions and one connecting portion includes two sub-connecting portions, there are four sub-connecting portions on one bus bar, and two sub-connecting portions are located at the free end of the first main body section, and the other two connecting portions are located at the free end of the second main body section. The extension directions of the transition sections in two adjacent sub-connecting parts in the plurality of sub-connecting parts are opposite, namely, the directions of the transition sections on the two adjacent sub-connecting parts in circumferential extension are opposite, one transition section extends anticlockwise, the other transition section extends clockwise, on one hand, the stamping forming difficulty can be reduced, and on the other hand, the plurality of sub-connecting parts on one bus bar can be uniformly arranged. Specifically, when a busbar includes three busbar, a busbar includes four sub-connecting portion, then a busbar includes 12 sub-connecting portion, and the extending direction through making the changeover portion in the adjacent sub-connecting portion is opposite, and then can ensure that 12 sub-connecting portion intervals are arranged on the skeleton uniformly, make things convenient for the winding tip to link to each other with sub-connecting portion, reduce the welding operation degree of difficulty.

In one possible design, further, the bus bar further includes a mounting portion disposed on the main body portion away from the connecting portion, the mounting portion being for connecting a connection terminal of the motor.

In this design, the busbar still includes the installation department, and the installation department avoids connecting portion to arrange on the main part, and the installation department is used for connecting the binding post of motor, sets up the installation department that is used for connecting alone for binding post, can ensure that binding post's hookup location is accurate. Specifically, the number of the mounting portions is 3. The 3 installation parts are arranged on the main body part at intervals. And selecting a proper mounting part for connection according to the position of the wiring terminal in the motor. That is, not every one of the plurality of mounting portions is used for connecting the connection terminal.

In one possible design, further, the mounting portion and the connecting portion are disposed on the same side of the main body portion in the axial direction; the mounting part is arranged on the main body part and positioned between the two connecting parts.

In this design, installation department and connecting portion set up in the main part along the same one side of axial, can simplify the stamping forming degree of difficulty of busbar on the one hand, and on the other hand also can simplify the structure with busbar matched with skeleton.

In one possible embodiment, the mounting portion extends axially and is bent and extends in a first direction away from the center axis of the electric machine.

In this design, the installation department bends along the axial extension back and deviating from the motor central axis to make the free end of installation department can stretch out towards the outside of skeleton, and then the binding post that can be convenient for the motor is connected with the installation department. That is to say, binding post need not to stretch into inside the skeleton in order to link to each other with the installation department, so alright in order to reduce the wiring degree of difficulty, is convenient for produce the high-efficient quick operation of line, promotes the production efficiency of product.

In one possible design, further, the free end of the mounting portion extends in the axial direction of the motor to form a mounting surface that can be connected to a terminal of the motor.

In this design, the installation department extends along the axial earlier, bends towards the direction that deviates from the motor central axis after that, and the free end of installation department can continue to extend along the axial of motor and form the installation face at last, and the installation face can link to each other with binding post, increases binding post and installation department's area of contact, improves binding post's joint strength and steadiness, reduces binding post and takes place the probability that warp.

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

In this design, the mounting portion includes a first mounting portion connected to the first body section and a second mounting portion connected to the second body section, i.e., the first mounting portion is spaced further from the central axis than the second mounting portion. In order to enable the outer wall surfaces of the first installation part and the second installation part to be located in the same arc surface, the extension length of the first installation part in the first direction can be smaller than that of the second installation part in the first direction, and at the moment, the installation surfaces, which are used for being connected with the wiring terminals, of the first installation part and the second installation part are located in the same arc surface, so that the wiring terminals can be conveniently assembled. Specifically, the number of the first mounting portions is two, and the number of the second mounting portions is one.

In one possible design, further, the number of the sub-connecting parts is multiple, and two sub-connecting parts on the first main body section of the main body part form gaps with part of the main body part; the second mounting portion in the first bus bar is capable of extending into a notch in the second bus bar.

In this design, two sub-connecting portions that are located on the first main body section of main part constitute the breach with partial main part, are located to be equipped with the breach on the connecting portion on the first main body section promptly, and the breach is arranged in dodging the second installation department in the adjacent busbar, and then realizes rationally arranging between a plurality of busbars.

Furthermore, a gap can be arranged between the two sub-connecting parts on the second main body section of the main body part, so that the weight of the bus bar can be reduced.

In one possible embodiment, the width of the cutout in the circumferential direction of the frame is greater than the width of the second mounting portion in the circumferential direction of the frame.

In this design, the width of breach in skeleton circumference is greater than the width of second installation department in circumference, and then makes the second installation department smoothly pass through the breach, and then is convenient for the electric connection between second installation department and the binding post, avoids the second installation department on a busbar and the connecting portion on the adjacent busbar to contact and cause the short circuit phenomenon.

In one possible design, further, the mounting portion is a mounting groove provided on the frame, and the main body portion is mounted in the mounting groove.

In the design, the assembly grooves are formed in the framework, partial bus bars are installed in the assembly grooves, the bus bars can be conveniently positioned and installed through the assembly grooves, and the operation is convenient and rapid. Specifically, the main body portion of the bus bar is located in the fitting groove.

According to a second aspect of the present invention there is provided an electrical machine comprising a busbar as provided in any one of the above designs.

The motor provided by the invention comprises the bus bar provided by any design, so that all beneficial effects of the bus bar are achieved, and the details are not repeated.

Further, the motor further comprises a machine shell, the bus bar is arranged in the machine shell, the motor further comprises a stator frame, the stator frame is connected to one side of the bus bar in the axial direction, and a winding arranged on the stator frame can be connected with a connecting portion of the bus bar.

In one possible design, further, the motor further comprises a control assembly, the control assembly is arranged on the other side of the bus bar in the axial direction, and the control assembly is provided with a controller; and the wiring terminal is connected between the mounting part and the controller.

Furthermore, binding post sets up by buckling, and binding post includes first wiring section and second wiring section, and first wiring section can be connected with the installation department and along the axial extension of skeleton, and the second wiring section links to each other with first wiring section and bends, and the free end of second wiring section continues along axial extension. The contact area of binding post and installation department can be increased to first wiring section, improves binding post's joint strength and steadiness, reduces binding post and takes place the probability of warping.

Further, the connecting terminal and the bus bar are connected by resistance welding, and of course, other welding methods such as ultrasonic welding or other fixed connection methods may be used. Optionally, the number of terminals is three.

According to a third aspect of the invention, a water pump is provided, which comprises the motor provided by any one of the above designs.

The water pump provided by the invention comprises the motor provided by any design, so that the water pump has all the beneficial effects of the motor, and the details are not repeated.

Further, the water pump also comprises a pump shell, and the pump shell is fixedly connected with the shell of the motor.

According to a fourth aspect of the invention, there is provided a vehicle comprising the water pump provided in any of the above designs, the vehicle comprising a vehicle body in which the water pump is mounted. It is worth to say that the vehicle can be a traditional fuel vehicle or a new energy vehicle. The new energy automobile comprises a pure electric automobile, a range-extended electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile and the like.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 shows a schematic diagram of a busbar according to an embodiment of the invention;

FIG. 2 illustrates a top view of a buss bar in one embodiment according to the present invention;

FIG. 3 is a schematic view showing an assembly structure of a plurality of bus bars in a bus bar according to an embodiment of the present invention;

FIG. 4 illustrates a top view of a plurality of busbars in a busbar in accordance with an embodiment of the present invention;

FIG. 5 illustrates a side view of a plurality of bus bars in a bus bar in accordance with an embodiment of the present invention;

FIG. 6 shows a schematic of the structure of one of the busbars in an embodiment in accordance with the invention;

FIG. 7 illustrates a top view of one of the busbars in an embodiment in accordance with the invention;

FIG. 8 shows a schematic structural diagram of a motor in an embodiment in accordance with the invention;

FIG. 9 shows an enlarged partial view of the motor at A shown in FIG. 8 in one embodiment in accordance with the invention;

FIG. 10 shows a schematic view of a water pump according to an embodiment of the invention;

FIG. 11 shows a further schematic representation of the water pump according to an embodiment of the invention;

fig. 12 shows a schematic structural diagram of a vehicle according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 12 is:

1a bus bar,

10, a framework, 101 an assembling part,

20 bus bars, 20a primary bus bars, 20b secondary bus bars,

21 body section, 211 first body section, 212 second body section, 213 bend section, 21a body section of the first bus bar, 211a first body section of the first bus bar, 212a second body section of the first bus bar, 213a bend section of the first bus bar, 21b body section of the second bus bar, 211b first body section of the second bus bar, 212b second body section of the second bus bar, 213b bend section of the second bus bar,

22 connecting part, 221 sub-connecting part, 222 connecting section, 223 transition section, 224 extending section, 225 notch,

23, 231 a first mounting portion, 232 a second mounting portion,

4 motor, 41 casing, 42 stator frame, 43 winding, 31 control component, 31a controller, 32 terminals,

5 water pump, 51 pump casing,

6 vehicles, 61 vehicle body.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The bus bar 1, the motor 4, the water pump 5, and the vehicle 6 according to some embodiments of the present invention are described below with reference to fig. 1 to 12.

Example one

According to a first aspect of the present invention, there is provided a bus bar 1 for a motor 4, as shown in fig. 1 and 2, the bus bar 1 includes a skeleton 10 and bus bars 20, the skeleton 10 is provided with a fitting portion 101, the bus bars 20 are provided on the skeleton 10, the number of the bus bars 20 is at least three, any two bus bars 20 of the at least three bus bars 20 have the same structure, the bus bars 20 include main body portions 21, and the main body portions 21 are provided on the fitting portion 101.

The bus bar 1 provided by the invention comprises a framework 10 and a bus bar 20, wherein the bus bar 20 is arranged on the framework 10. Wherein, skeleton 10 is the insulating part, and skeleton 10 is cyclic annular, and skeleton 10 can adopt the mode of moulding plastics shaping, and skeleton 10 is arranged in providing the support effect and keeping apart adjacent busbar 20 among at least three busbar 20, plays the effect of electrical insulation to busbar 20. The bus bar 20 is a conductor, and the bus bar 20 is used for connecting the ends of the windings 43 that need to be connected together in the plurality of windings 43 of the stator of the motor 4, so as to realize the electrical connection of the ends of the plurality of windings 43 and realize the bus function. According to the invention, by making the bus bars 20 have the same structure, the number of dies for preparing the bus bars 20 can be reduced, the processing difficulty of the bus bars 20 is reduced, the production efficiency is improved, the production cost of the bus bar 1 is reduced, and the competitiveness of the product is effectively improved. Specifically, the at least three bus bars 20 include a U-phase bus bar 20, a V-phase bus bar 20, and a W-phase bus bar 20, that is, the U-phase bus bar 20, the V-phase bus bar 20, and the W-phase bus bar 20 are completely identical in shape and size. Further, the bus bar 20 is made of copper, which has a good conductive property and a relatively low price, and in addition, copper has the advantages of being easy to punch and form and having sufficient hardness. Specifically, the bus bar 20 includes a main body portion 21, the main body portion 21 is disposed on the skeleton 10 through a fitting portion 101, the fitting portion 101 may be a fitting groove, and the main body portion 21 is embedded in the fitting groove, so that the assembly is simple. Of course, the mounting portion 101 may also be a connecting structure, and the main body portion may cooperate with the connecting structure to seat the bus bar 20 on the frame 10.

Further, as shown in fig. 3, 4, 6 and 7, the bus bar 20 includes a main body portion 21, the main body portion 21 is disposed on the skeleton 10, the main body portion 21 includes a first main body section 211, a second main body section 212 and a bent section 213, wherein a distance between any point on the second main body section 212 and the central axis of the motor 4 is smaller than a distance between any point on the first main body section 211 and the central axis of the motor 4; bend segment 213 is connected between first body segment 211 and second body segment 212.

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 which are connected, wherein a distance between any point on the first main body section 211 and a central axis of the motor 4 is greater than a distance between any point on the second main body section 212 and the central axis of the motor 4, that is, distances between the first main body section 211 and the second main body section 212 and the central axis are respectively different, at this time, the first main body section 211 and the second main body section 212 are connected by the bending section 213, and when the number of the bus bars 20 in the bus bar 1 is plural, the first main body section 211 and the second main body section 212 which are different in size in the radial direction can facilitate the arrangement of the plural bus bars 20 of the same structure on the frame 10. Specifically, the first main body section 211 is a first circular arc section, the second main body section 212 is a second circular arc section, the first circular arc section and the second circular arc section have the same circle center, and the radius of the first circular arc section is greater than that of the second circular arc section, that is, the first circular arc section and the second circular arc section have different concentric diameters. The first circular arc section and the second circular arc section are not complete rings, and can be formed in a bending mode and the like.

Further, as shown in fig. 3 and 4, the main body portions 21 of all the bus bars 20 can form two incomplete circular rings on a plane perpendicular to the axis of the skeleton 10. Specifically, the first body segments 211 in the body portions 21 of all the bus bars 20 can form an incomplete first ring, and the second body segments 212 in the body portions 21 of all the bus bars 20 can form an incomplete second ring, wherein the radius of the first ring is greater than the radius of the second ring.

Further, by providing the bending section 213 between the first main body section 211 and the second main body section 212, the first main body section 211 and the second main body section 212 of the plurality of bus bars 20 can be arranged by being offset in the radial direction of the skeleton 10 through the bending section 213, that is, the plurality of first main body sections 211 of the plurality of bus bars 20 can form a ring shape with a larger radius, and the plurality of second main body sections 212 of the plurality of bus bars 20 can form a ring shape with a smaller radius, at this time, the outer contour shape of the overall structure formed by arranging the plurality of bus bars 20 with each other is a regular circle. Therefore, the difficulty in manufacturing the framework 10 for assembling the bus bar 20 can be reduced, namely the framework 10 can also be made into a regular shape, the manufacturing cost of the framework 10 is reduced, the overall structure of the bus bar 1 can be suitable for the existing motor 4, and the universality is high.

Further, as shown in fig. 3 and 4, the at least three bus bars 20 include adjacent first and second bus bars 20a and 20b, and the first main body section 211a of the first bus bar 20a is located on a side of the second main body section 212b of the second bus bar 20b facing away from the central axis of the motor 4.

In this embodiment, the first bus bar 20a includes a main body portion 21a, a first main body section 211a, a second main body section 212a, and a bent section 213a, and the second bus bar 20b includes a main body portion 21b, a first main body section 211b, a second main body section 212b, and a bent section 213 b. The at least three bus bars 20 include adjacent first and second bus bars 20a, 20b, wherein the body portion 21 includes a first side proximate the central axis of the motor 4 and a second side facing away from the central axis of the motor 4. The adjacent two bus bars 20 are connected as follows: the first main body segment 211a of the first bus bar 20a is located on the second side of the second main body segment 212b of the second bus bar 20b, that is, any two adjacent bus bars 20 of the at least three bus bars 20 satisfy the above arrangement. Therefore, when a plurality of bus bars 20 having the same structure are arranged, interference between the bus bars 20 is prevented according to the arrangement. In addition, according to this arrangement, the density of the bus bars 20 can be increased, and the size of the product can be further reduced.

Further, as shown in fig. 5, the axial thickness of the body portion 21 is greater than the radial thickness of the body portion 21.

In this embodiment, the axial thickness of the main body portion 21 is greater than the radial thickness of the main body portion 21, and due to the limitation of the arrangement manner of the plurality of 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, and at this time, on the basis of meeting the current density requirement, in order to save the radial space of the skeleton 10, the bearing capacity of the bus bars 20 for the current density is ensured by increasing the axial thickness of the main body portion 21.

Example two

Unlike the previous embodiment, the present embodiment further defines that the bus bar 20 further includes the connection portions 22, as shown in fig. 6 and 7, the connection portions 22 are respectively disposed at the ends of the main body portion 21, and the connection portions 22 are used for connecting the windings 43 of the motor 4.

In this embodiment, the bus bar 20 further includes the connecting portion 22 disposed on the main body portion 21, and each winding 43 end portion of the plurality of windings 43 of the stator of the motor 4 can be connected through the connecting portion 22, and the good conductivity of the bus bar 20 is utilized to realize the electrical connection corresponding to the winding 43 end portion, and the corresponding winding 43 terminal is not required to be directly connected, so that the wiring difficulty is reduced, the efficient and fast operation of the production line is facilitated, and the production efficiency of the product is improved. Specifically, the main body portion 21 includes two ends, i.e., a free end of the first body segment 211 and a free end of the second body segment 212, the number of the connecting portions 22 is two, one connecting portion 22 is disposed at the free end of the first body segment 211, and the other connecting portion 22 is disposed at the free end of the second body segment 212.

Further, as shown in fig. 6 and 7, the connection portion 22 includes at least one sub-connection portion 221, each sub-connection portion 221 of the at least one sub-connection portion 221 includes a connection section 222 and an extension section 224, and the connection section 222 is disposed on the main body portion 21 of the bus bar 20 and extends in the axial direction of the motor 4; the extension 224 is directly or indirectly connected to the connecting section 222, the free end of the extension 224 is bent to form a mounting region, and the winding 43 of the electric motor 4 protrudes into the mounting region and is connected to the extension 224.

In this embodiment, each sub-connection portion 221 includes a connection section 222 extending axially and an extension section 224 connected to the connection section 222, and a free end of the extension section 224 is bent to form an assembly area, so that the end portion of the winding 43 can be conveniently and rapidly inserted into the assembly area, which is also beneficial to increasing the space for welding operation and reducing the difficulty of welding operation, so that the end portion of the winding 43 can be better welded to the connection portion 22. Further, the projection of the extension 224 on the axial end face of the frame 10 is U-shaped. Specifically, the number of the sub-connection parts 221 is an even number, and the number of the sub-connection parts 221 on one bus bar 20 is at least two and is increased by an even multiple, that is, the number of the sub-connection parts 221 on one bus bar 20 may be 2, 4, or the like. The number of the sub-connecting portions 221 of one busbar 1 may be determined according to the number of poles of the motor 4, and specifically may be 12 or 16.

Further, as shown in fig. 6 and 7, the connecting portion 22 further includes a transition section 223, the transition section 223 is disposed between the connecting section 222 and the extending section 224, and the transition section 223 extends along the circumferential direction of the framework 10.

In this embodiment, the connecting portion 22 further includes a transition section 223, the transition section 223 is connected between the connecting section 222 and the extending section 224, the transition section 223 extends along the circumferential direction of the frame 10, the transition section 223 can prevent the distance between two adjacent sub-connecting portions 221 from being too small to interfere with the welding operation of the winding 43 end and the extending section 224, and the distance between the adjacent sub-connecting portions 221 can be adjusted by the transition section 223, so that the plurality of sub-connecting portions 221 are uniformly arranged on the frame 10 after the plurality of bus bars 20 are assembled.

Further, as shown in fig. 6 and 7, the number of the sub-connection portions 221 is plural, and the extension directions of the transition sections 223 in the adjacent sub-connection portions 221 among the plurality of sub-connection portions 221 are opposite.

In this embodiment, the number of the sub-connection portions 221 is plural, and since one bus bar 20 includes two connection portions 22 and one connection portion 22 includes two sub-connection portions 221, there are four sub-connection portions 221 on one bus bar 20, two sub-connection portions 221 are located at the free end of the first main body section 211, and the other two connection portions 22 are located at the free end of the second main body section 212. The extending directions of the transition sections 223 of two adjacent sub-connecting portions 221 of the plurality of sub-connecting portions 221 are opposite, that is, the directions of the transition sections 223 of the two adjacent sub-connecting portions 221 extending in the circumferential direction are opposite, one extends counterclockwise, and the other extends clockwise, so that the difficulty of stamping forming can be reduced, and the plurality of sub-connecting portions 221 on one busbar 1 can be uniformly arranged. Specifically, when one busbar 1 includes three busbars 20 and one busbar 20 includes four sub-connecting portions 221, one busbar 1 includes 12 sub-connecting portions 221, and the extending directions of the transition sections 223 in the adjacent sub-connecting portions 221 are opposite, so that the 12 sub-connecting portions 221 can be uniformly arranged on the framework 10 at intervals, the connection between the ends of the windings 43 and the sub-connecting portions 221 is facilitated, and the difficulty of welding operation is reduced.

EXAMPLE III

Unlike the two embodiments described above, the busbar 1 of the present embodiment further includes a mounting portion 23, as shown in fig. 6 and 7, the mounting portion 23 being disposed on the main body portion 21 avoiding the connecting portion 22, the mounting portion 23 being used to connect the connection terminal 32 of the motor 4.

In this embodiment, the bus bar 1 further includes the mounting portion 23, the mounting portion 23 is disposed on the main body portion 21 avoiding the connecting portion 22, the mounting portion 23 is used for connecting the connection terminal 32 of the motor 4, and the mounting portion 23 for connection is provided separately for the connection terminal 32, so that it is possible to ensure that the connection position of the connection terminal 32 is accurate. Specifically, the number of the mounting portions 23 is 3. 3 mounting portions 23 are arranged at intervals on the main body portion 21. The appropriate mounting portion 23 is selected for connection based on the position of the terminal 32 in the motor 4. That is, not every one of the plurality of mounting portions 23 is used for connecting the wire terminals 32.

Further, as shown in fig. 5 to 7, the mounting portion 23 and the connecting portion 22 are provided on the same side of the main body portion 21 in the axial direction; the mounting portion 23 is provided on the main body portion 21 between the two connecting portions 22.

In this embodiment, the mounting portion 23 and the connecting portion 22 are provided on the same side of the main body portion 21 in the axial direction, which can simplify the difficulty in press-forming the bus bar 20 on the one hand and also simplify the structure of the skeleton 10 fitted to the bus bar 20 on the other hand.

Further, as shown in fig. 6 and 7, the mounting portion 23 extends in the axial direction and is bent and extends in a first direction away from the central axis of the motor 4.

In this embodiment, the mounting portion 23 extends axially and is bent away from the central axis of the motor 4, so that the free end of the mounting portion 23 can extend out of the frame 10, and the connection terminal 32 of the motor 4 can be connected to the mounting portion 23 conveniently. That is to say, binding post 32 need not to stretch into inside in order to link to each other with installation department 23 of skeleton 10, so alright in order to reduce the wiring degree of difficulty, is convenient for produce the high-efficient quick operation of line, promotes the production efficiency of product.

Further, the free end of the mounting portion 23 extends in the axial direction of the motor 4 to form a mounting surface that can be connected to the connection terminal 32 of the motor 4.

In this embodiment, the mounting portion 23 extends in the axial direction first, and then bends toward the direction away from the central axis of the motor 4, and finally the free end of the mounting portion 23 can continue to extend in the axial direction of the motor 4 and form a mounting surface, and the mounting surface can be connected with the connection terminal 32, so that the contact area between the connection terminal 32 and the mounting portion 23 is increased, the connection strength and the stability of the connection terminal 32 are improved, and the probability of deformation of the connection terminal 32 is reduced.

Further, as shown in fig. 6 and 7, the mounting portion 23 includes a first mounting portion 231, the first mounting portion 231 being connected to the first body section 211 of the body portion 21; a second mounting portion 232, the second mounting portion 232 being connected to the second body section 212 of the body portion 21, an extension of the first mounting portion 231 in the first direction being less than an extension of the second mounting portion 232 in the first direction.

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 body section 211, and the second mounting portion 232 is connected to the second body section 212, i.e., the first mounting portion 231 is spaced further from the central axis than the second mounting portion 232. In order to make the outer wall surfaces of the first mounting portion 231 and the second mounting portion 232 be located in the same arc surface, the extension length of the first mounting portion 231 in the first direction may be smaller than the extension length of the second mounting portion 232 in the first direction, and at this time, the mounting surfaces of the first mounting portion 231 and the second mounting portion 232 for connecting with the connection terminal 32 are located in the same arc surface, so that the assembly of the connection terminal 32 may be facilitated. Specifically, the number of the first mounting parts 231 is two, and the number of the second mounting parts 232 is one.

Further, as shown in fig. 6 and 7, the number of the sub-connecting portions 221 is plural, and two sub-connecting portions 221 located on the first body section 211 of the body portion 21 and a part of the body portion 21 form a notch 225; the second mounting portion 232 of the primary bus bar 20a can extend into a notch 225 of the secondary bus bar 20 b.

In this embodiment, the two sub-connecting portions 221 on the first main body section 211 of the main body portion 21 and a part of the main body portion 21 form a gap 225, that is, the connecting portion 22 on the first main body section 211 is provided with the gap 225, and the gap 225 is used for avoiding the second mounting portion 232 in the adjacent bus bar 20, so as to achieve reasonable arrangement among the plurality of bus bars 20.

Further, a gap 225 may be provided between the two sub-connecting portions 221 of the second body section 212 of the main body 21, so that the weight of the bus bar 20 can be reduced.

Further, the width of the notch 225 in the circumferential direction of the frame 10 is larger than the width of the second mounting portion 232 in the circumferential direction of the frame 10.

In this embodiment, the width of the gap 225 in the circumferential direction of the frame 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 gap 225, thereby facilitating the electrical connection between the second mounting portion 232 and the connection terminal 32, and avoiding the short circuit phenomenon caused by the contact between the second mounting portion 232 on one bus bar 20 and the connection portion 22 on the adjacent bus bar 20.

Further, the fitting portion 101 is a fitting groove provided on the frame 10, and the main body portion 21 is fitted in the fitting groove.

In this embodiment, the frame 10 is provided with an assembly groove, and a part of the bus bar 20 is installed in the assembly groove, so that the bus bar 20 can be conveniently positioned and installed by the assembly groove, and the operation is convenient and quick. Specifically, the main body portion 21 of the bus bar 20 is located in the fitting groove.

Example four

According to a second aspect of the present invention, there is provided an electrical machine 4 comprising a busbar 1 as provided in any one of the above designs.

As shown in fig. 8 and 9, the motor 4 provided by the present invention includes the bus bar 1 provided by any of the above designs, so that the bus bar 1 has all the advantages, and the details are not repeated herein.

Further, the motor 4 further includes a housing 41, the bus bar 1 is disposed in the housing 41, the motor 4 further includes a stator frame 42, the stator frame 42 is connected to one side of the bus bar 1 in the axial direction, and a winding 43 disposed on the stator frame 42 can be connected to the connecting portion 22 of the bus bar 1.

In one possible design, further, the motor 4 further includes a control assembly 31, the control assembly 31 is disposed on the other side of the busbar 1 in the axial direction, and the control assembly 31 has a controller 31 a; and a connection terminal 32, wherein the connection terminal 32 is connected between the mounting portion 23 and the controller 31 a.

Further, the wiring terminal 32 is bent, the wiring terminal 32 includes a first wiring section and a second wiring section, the first wiring section can be connected with the mounting portion 23 and extends along the axial direction of the framework 10, the second wiring section is connected with the first wiring section and is bent, and the free end of the second wiring section continues to extend along the axial direction. The first wiring section can increase the contact area of the wiring terminal 32 and the mounting part 23, improve the connection strength and the stability of the wiring terminal 32, and reduce the probability of deformation of the wiring terminal 32.

Further, the terminal 32 is connected to the bus bar 1 by resistance welding, but may be connected by other welding methods such as ultrasonic welding or other fixing methods. Optionally, the number of terminals 32 is three.

EXAMPLE five

According to a third aspect of the present invention, there is provided a water pump 5 comprising a motor 4 as provided in any of the above designs.

As shown in fig. 10 and 11, the water pump 5 provided by the present invention includes the motor 4 provided by any of the above designs, so that the present invention has all the advantages of the motor 4, and details thereof are not repeated herein.

Further, the water pump 5 further comprises a pump housing 51, and the pump housing 51 is fixedly connected with the housing 41 of the motor 4.

EXAMPLE six

According to a fourth aspect of the present invention, there is provided a vehicle 6, as shown in fig. 12, the vehicle 6 comprising the water pump 5 provided in any one of the above designs, the vehicle 6 comprising a vehicle body 61, the water pump 5 being mounted in the vehicle body 61.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. 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 the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.