An electric motor

Abstract

The present invention relates to the technical field of vehicle parts, and specifically discloses an electric motor, which includes an insulating part, the insulating part includes a fixing part and a plurality of partitions, the plurality of partitions are evenly arranged along the circumferential direction of the fixing part, the stator coil is arranged between adjacent partitions, and a first groove, a second groove and a third groove separated from each other are opened along the circumferential direction of the fixing part, a first busbar connected to the stator coil can be fixed in the first groove, a second busbar connected to the stator coil can be fixed in the second groove, and a third busbar connected to the stator coil can be fixed in the third groove, so that the insulation distance between the stator coils and between the busbars can be ensured, and the risk of arc discharge can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle parts, and in particular to an electric motor. Background Art

[0002] Electric motors have become an indispensable part of various drive systems used in mobile environments such as vehicles. At present, the electric motors used in conventional automotive electric compressors generally include an annular stator and a rotor arranged in the middle of the stator. The stator is fixedly installed inside the electric motor. Due to the limited installation space in the vehicle, the distance between the stator and the housing is very small.

[0003] Since the installation space of the stator in the electric motor is small, the spacing between the coils of the stator is small, and too small creepage distance or air gap may cause discharge and affect the normal operation of the electric motor. Summary of the invention

[0004] The present invention provides an electric motor, which can ensure the insulation distance between stator coils and between busbars and reduce the risk of arc discharge.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An electric motor includes a stator coil and an insulating part.

[0007] The above-mentioned insulating part includes a fixing part and a plurality of partitions, and the plurality of partitions are evenly arranged along the circumferential direction of the above-mentioned fixing part. The above-mentioned stator coil is arranged between adjacent ones of the above-mentioned partitions. A first groove, a second groove and a third groove separated from each other are opened along the circumferential direction of the above-mentioned fixing part. The first busbar connected to the above-mentioned stator coil can be fixed in the above-mentioned first groove, the second busbar connected to the above-mentioned stator coil can be fixed in the above-mentioned second groove, and the third busbar connected to the above-mentioned stator coil can be fixed in the above-mentioned third groove.

[0008] Optionally, the fixing member is provided with inlets respectively connected to the first groove, the second groove and the third groove, and a connector of each stator coil is inserted into one of the first groove, the second groove or the third groove through the inlet, and the connectors in the first groove are electrically connected to form the first busbar;

[0009] and, the joints in the second grooves are electrically connected to form the second busbar;

[0010] And, the above-mentioned joints in the above-mentioned third groove are electrically connected to form the above-mentioned third busbar.

[0011] Optionally, a limiting member is further included, and the limiting member is arranged on the top of the fixing member to limit the movement of the first busbar, the second busbar and the third busbar along the axial direction of the fixing member.

[0012] Optionally, the limiting member and the fixing member are detachably connected.

[0013] Optionally, the stator is provided with a buckle, the fixing member is provided with a connecting hole, and the buckle is engaged with the connecting hole.

[0014] Optionally, the fixing member and the partition are made by integral molding.

[0015] Optionally, it further comprises a cluster assembly, wherein the cluster assembly comprises a body and a detachable cluster,

[0016] The above-mentioned fixing part is arranged between the above-mentioned body and the stator of the electric motor, the above-mentioned detachable cluster is arranged on the top of the above-mentioned body, the above-mentioned detachable cluster includes three terminal slots, the end of the above-mentioned first busbar, the end of the above-mentioned second busbar and the end of the above-mentioned third busbar are all electrically connected with terminals, and the three terminals can be sealed and plugged with the three terminal slots respectively.

[0017] Optionally, three communication holes are opened on the main body, and the first busbar, the second busbar and the third busbar are respectively passed through the three communication holes.

[0018] Optionally, a sealing member is provided at the connection between the terminal and the terminal slot.

[0019] Optionally, three terminal holes are further included, and each of the terminal holes is connected to one of the terminal grooves.

[0020] The beneficial effects of the present invention are:

[0021] By arranging an insulating part on the electric motor, and arranging the insulating part including a fixing member and a plurality of partitions, the partitions are inserted between the stator coils to separate the stator coils, thereby avoiding discharge between the stator coils. By arranging a first groove, a second groove and a third groove separated from each other on the fixing member, and fixing the first busbar in the first groove, the second busbar in the second groove, and the third busbar in the third groove, the insulation distance between the first busbar, the second busbar and the third busbar can be ensured, thereby blocking the discharge between the first busbar, the second busbar and the third busbar, and improving the safety and service life of the above-mentioned electric motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of the insulating part provided by the present invention;

[0023] Figure 2The assembly of the insulating part and the stator provided by the present invention Figure 1 ;

[0024] Figure 3 The assembly of the insulating part and the stator provided by the present invention Figure 2 ;

[0025] Figure 4 for Figure 3 A partial cross-sectional view of

[0026] Figure 5 A schematic diagram of the structure of the cluster assembly provided by the present invention;

[0027] Figure 6 An assembly diagram of the electric motor provided by the present invention.

[0028] In the figure:

[0029] 100, insulating part; 110, fixing part; 111, first groove; 112, second groove; 113, third groove; 114, inlet; 115, connecting hole; 120, partition; 130, limit part; 200, stator coil; 210, first busbar; 220, second busbar; 230, third busbar; 300, cluster assembly; 310, main body; 320, fixing cluster; 321, terminal slot; 322, terminal hole; 330, sealing part. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] The present invention provides an electric motor, which can ensure the insulation distance between stator coils and between busbars and reduce the risk of arc discharge.

[0035] like Figure 1 As shown, the electric motor includes a stator coil 200 and an insulating portion 100. The insulating portion 100 includes a fixing member 110 and a plurality of partitions 120. The plurality of partitions 120 are evenly spaced along the circumference of the fixing member 110. The fixing member 110 is connected to the stator. Figure 2 As shown, stator coils 200 are arranged between adjacent partitions 120. The stator coils 200 are separated by the partitions 120, so that discharge between the stator coils 200 can be avoided, thereby improving the safety of the electric motor. Figure 3 and Figure 4As shown, a first groove 111, a second groove 112 and a third groove 113 are provided along the circumferential direction of the fixing member 110, and the first groove 111, the second groove 112 and the third groove 113 are not connected to each other, the first busbar 210 connected to the stator coil 200 can be fixed in the first groove 111, the second busbar 220 connected to the stator coil 200 can be fixed in the second groove 112, and the third busbar 230 connected to the stator coil 200 can be fixed in the third groove 113, and the fixing portion and the partition 120 both have insulation properties.

[0036] The adjacent stator coils 200 are separated by the partition 120. Since the partition 120 has insulation properties, the discharge between the stator coils 200 can be blocked, thereby improving the safety performance of the above-mentioned electric motor. By providing a first groove 111, a second groove 112, and a third groove 113 separated from each other on the fixing member 110, and fixing the first busbar 210 in the first groove 111, fixing the second busbar 220 in the second groove 112, and fixing the third busbar 230 in the third groove 113, the insulation distance between the first busbar 210, the second busbar 220, and the third busbar 230 can be ensured, reducing the risk of arc discharge between the first busbar 210, the second busbar 220, and the third busbar 230, thereby improving the safety performance and service life of the above-mentioned electric motor.

[0037] Furthermore, the insulating part 100 can be made of materials with insulating properties such as plastics, organic polymer materials, etc., which can be selected according to actual needs.

[0038] Preferably, in one embodiment, the fixing frame and the partition 120 can be made by an integral molding method, such as injection molding, which is low-cost and suitable for mass production.

[0039] Further, see Figure 2 , an inlet 114 is provided on the fixing member 110, and a joint on the stator coil 200 can pass through the inlet 114 and enter one of the first groove 111, the second groove 112 or the third groove 113. Specifically, three inlets 114 can be provided on the fixing member 110 opposite to each stator coil 200, and the required inlet 114 can be selected according to assembly requirements. The joints inserted into the first groove 111 are electrically connected to form a first busbar 210, the joints inserted into the second groove 112 are electrically connected to form a second busbar 220, and the joints inserted into the third groove 113 are electrically connected to form a third busbar 230. In this embodiment, there are 12 stator coils 200, so 4 joints are inserted into the first groove 111, the second groove 112 and the third groove 113.

[0040] Preferably, in order to improve the insulation performance of the first busbar 210, the second busbar 220 and the third busbar 230 and reduce the discharge risk between the first busbar 210, the second busbar 220 and the third busbar 230, an insulating protective cover can be provided outside the first busbar 210, the second busbar 220 and the third busbar 230. In one embodiment, in order to facilitate the distinction between the first busbar 210, the second busbar 220 and the third busbar 230 and avoid line connection errors, protective covers of different colors can be used, which can be selected according to actual needs.

[0041] Further, in one embodiment, the protective cover can be a rubber tube with a certain hardness, and the rubber tube has a certain deformation ability, and can fix the first busbar 210, the second busbar 220 or the third busbar 230 in the rubber tube by deformation to prevent the protective cover from falling off, and the rubber tube with a certain hardness can facilitate the assembly of the first busbar 210 and the first groove 111, the assembly of the second busbar 220 and the second groove 112, and the assembly of the third busbar 230 and the third groove 113. In other embodiments, other materials can also be used, as long as they have insulation properties and can play a protective effect, they are all within the protection scope of this application.

[0042] Preferably, continue to see Figure 3 and Figure 4 A limiter 130 may be provided on the top end surface of the fixing member 110 to limit the displacement of the first busbar 210, the second busbar 220 and the third busbar 230 along the axial direction of the fixing member 110, thereby improving the connection strength between the first busbar 210 and the first groove 111, between the second busbar 220 and the second groove 112, and between the third busbar 230 and the third groove 113, thereby ensuring the insulation distance between the first busbar 210, the second busbar 220 and the third busbar 230, and reducing the risk of discharge between the first busbar 210, the second busbar 220 and the third busbar 230.

[0043] Preferably, in one embodiment, a plurality of limit members 130 may be provided, and the plurality of limit members 130 are arranged at intervals along the circumference of the fixing member 110 to improve the limit effect. In another embodiment, the limit member 130 may also be a limit plate, and the limit plate may cover the fixing member 110, but in this case, three through holes should be provided on the limit plate so that the first busbar 210, the second busbar 220, and the third busbar 230 are electrically connected to external components.

[0044] Preferably, in order to facilitate the electrical connection process between the joints of the stator coil 200, the limiter 130 can be connected to the fixing member 110 in a detachable manner. When the electrical connection between the joints of the stator coil 200 is completed, that is, the assembly of the first busbar 210, the second busbar 220 and the third busbar 230 is completed, the limiter 130 is assembled.

[0045] Further, see Figure 3 In one embodiment, the fixing member 110 and the stator can be connected by snapping. Specifically, a connection hole 115 is provided on the fixing member 110, and a buckle is provided on the stator, and the buckle can be snapped with the connection hole 115. In other embodiments, the fixing member 110 and the stator can be connected by other methods, which can be set according to actual needs.

[0046] Furthermore, if Figure 5 and Figure 6 As shown, the electric motor further comprises a cluster assembly 300, wherein the cluster assembly 300 comprises a main body 310 and a fixed cluster 320, the main body 310 is connected to the housing of the electric motor, the fixing part 110 is arranged between the main body 310 and the stator, the fixed cluster 320 is arranged at the top of the main body 310, the fixed cluster 320 comprises three terminal slots 321, the end of the first bus bar 210, the end of the second bus bar 220 and the end of the third bus bar 230 are all electrically connected with terminals, the three terminals can be respectively inserted into the three terminal slots 321 and sealedly connected with the terminal slots 321, and by setting the terminals to be sealed and plugged in the terminal slots 321, the terminals can be isolated from the outside world to prevent water in the outside environment from contacting the terminals and causing a short circuit.

[0047] Preferably, a seal 330 can be provided at the connection between the terminal and the terminal slot 321, and the sealing of the connection between the terminal and the terminal slot 321 is achieved by the seal 330. The seal 330 can be made of rubber. The rubber has a certain flexibility and can fit the outer wall of the terminal slot 321 and the terminal through its own elastic deformation, thereby improving the sealing performance.

[0048] Further, three communication holes (not shown in the figure) can be opened on the body 310, and the first busbar 210, the second busbar 220 and the third busbar 230 are respectively provided with three communication holes. Since the fixing plate is arranged between the body 310 and the stator, the first busbar 210, the second busbar 220 and the third busbar 230 need to be provided with communication holes to be connected with the terminal slot 321. The provision of three communication holes can ensure the insulation distance between the first busbar 210, the second busbar 220 and the third busbar 230, and reduce the risk of discharge between the first busbar 210, the second busbar 220 and the third busbar 230.

[0049] Further, see Figure 5 and Figure 6 Three terminal holes 322 may be provided on the fixed cluster 320 , each terminal hole 322 is connected to a corresponding terminal slot 321 , and an external circuit may be connected to the terminal through the terminal hole 322 .

[0050] The present invention can ensure the insulation distance between the stator coils 200 and avoid discharge between the stator coils 200 by setting the partition 120 between the stator coils 200, while reducing the scrap rate caused by the low insulation resistance between the stator coils 200 during the manufacturing process, thereby reducing the production cost. By fixing the first busbar 210 in the first groove 111, the second busbar 220 in the second groove 112, and the third busbar 230 in the third groove 113, the first busbar 210, the second busbar 220 and the third busbar 230 can be separated from each other, avoiding discharge caused by the close distance between the first busbar 210, the second busbar 220 and the third busbar 230, thereby improving the safety performance and service life of the above-mentioned electric motor. By setting the terminal and the terminal slot 321 to be sealed and plugged, the refrigerant can be prevented from flowing into the terminal, thereby avoiding short circuit.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An electric motor, comprising a stator coil (200), characterized in that: It also includes an insulating portion (100), The insulating part (100) comprises a fixing member (110) and a plurality of partitions (120), wherein the plurality of partitions (120) are evenly spaced along the circumferential direction of the fixing member (110), the stator coil (200) is arranged between adjacent partitions (120), and a plurality of groove groups separated from each other are provided along the circumferential direction of the fixing member (110), and each of the groove groups is provided with a first groove (111), a second groove (112), and a second groove (113) in sequence from the outside to the inside in the radial direction of the fixing member (110). 12) and a third groove (113), a first busbar (210) connected to the stator coil (200) can be fixed in the first groove (111), a second busbar (220) connected to the stator coil (200) can be fixed in the second groove (112), and a third busbar (230) connected to the stator coil (200) can be fixed in the third groove (113); the fixing member (110) and the partition (120) both have insulation properties; The fixing member (110) is provided with an inlet (114) respectively connected to the first groove (111), the second groove (112) and the third groove (113); a joint of each stator coil (200) passes through the inlet (114) and enters one of the first groove (111), the second groove (112) or the third groove (113); the joints in the first groove (111) are electrically connected to form the first busbar (210); and, the joints in the second groove (112) are electrically connected to form the second busbar (220); And, the joints in the third groove (113) are electrically connected to form the third busbar (230).

2. The electric motor according to claim 1, characterized in that The invention also includes a limiting member (130), which is arranged on the top of the fixing member (110) to limit the movement of the first busbar (210), the second busbar (220) and the third busbar (230) along the axial direction of the fixing member (110).

3. The electric motor according to claim 2, characterized in that The limiting member (130) and the fixing member (110) are detachably connected.

4. The electric motor according to claim 1, characterized in that The stator is provided with a buckle, the fixing member (110) is provided with a connecting hole (115), and the buckle is engaged with the connecting hole (115).

5. The electric motor according to claim 1, characterized in that The fixing member (110) and the partition plate (120) are manufactured in an integrally formed manner.

6. The electric motor according to any one of claims 1 to 5, characterized in that: Also included is a cluster assembly (300), wherein the cluster assembly (300) includes a body (310) and a fixed cluster (320), The fixing member (110) is arranged between the main body (310) and the stator of the electric motor, the fixing cluster (320) is arranged at the top of the main body (310), and the fixing cluster (320) includes three terminal slots (321), and the ends of the first busbar (210), the second busbar (220) and the third busbar (230) are all electrically connected with terminals, and the three terminals can be sealed and plugged into the three terminal slots (321) respectively.

7. The electric motor according to claim 6, characterized in that The body (310) is provided with three communication holes, and the first busbar (210), the second busbar (220) and the third busbar (230) are respectively passed through the three communication holes.

8. The electric motor according to claim 6, characterized in that A sealing member (330) is provided at the connection between the terminal and the terminal groove (321).

9. The electric motor according to claim 6, characterized in that The fixed cluster (320) is also provided with three terminal holes (322), and each of the terminal holes (322) is connected to one of the terminal grooves (321).

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