Electric automobile and motor and stator assembly thereof

Abstract

The utility model discloses an electric automobile and a motor and stator assembly thereof, the electric automobile comprises a motor, the motor comprises a stator assembly, and the stator assembly comprises an integrated shell; one end of the extrusion shell is coaxially connected with one end of the integrated shell, and an accommodating space is defined by the extrusion shell and the integrated shell; the stator is mounted in the accommodating space, and the stator, the integrated shell and the extrusion shell are coaxially arranged; the sum of the length of the integrated shell and the length of the extrusion shell is greater than the length of the stator, and the length of the extrusion shell is adjusted according to the length of the stator; and the end cover is mounted at the other end of the extrusion shell. According to the stator assembly provided by the utility model, the length of the extrusion molding shell can be increased along with the increase of the length of the stator core, and the stator assembly is highly compatible; and meanwhile, a plurality of sets of integrated casing die-casting dies are prevented from being developed, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to an electric vehicle, in particular to an electric vehicle and a motor and a stator assembly thereof. Background Art

[0002] The drive motor system for electric vehicles has gradually developed into a two-in-one or multi-in-one form, usually integrating the motor housing and the controller housing into one to reduce the number of parts and improve the integration. After the motor housing and the controller housing are integrated, they are mostly formed by die casting; assuming that the length of the die-casting integrated housing is L1, the longest length of the stator core it is adapted to is L2, where L1>L2, then L1-L2=L. Among them, L represents the space after the integrated housing accommodates the stator core. This method cannot adapt to stators of different lengths. Even if the die-casting mold can be compatible with a certain length of stator core, if a smaller stator is installed, the housing length will be redundant, and the length of the whole machine will not be competitive; if the length of the stator core increases, the current housing cannot accommodate the stator core with an increased length; or if one or more sets of integrated housing die-casting molds suitable for different core lengths are opened, more mold development costs are required, which increases the mold manufacturing and reserve costs, which is not conducive to cost reduction and efficiency improvement for enterprises. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an electric vehicle and a motor and stator assembly thereof in view of the above-mentioned defects of the prior art.

[0004] In order to achieve the above object, the utility model provides a stator assembly, which includes:

[0005] Integrated housing;

[0006] An extruded shell, one end of which is coaxially connected to one end of the integrated shell, and together with the integrated shell, forms an accommodation space;

[0007] a stator installed in the accommodating space and coaxially arranged with the integrated housing and the extruded housing; the sum of the length of the integrated housing and the length of the extruded housing is greater than the length of the stator, and the length of the extruded housing is adjusted according to the length of the stator; and

[0008] An end cover is mounted on the other end of the extruded shell.

[0009] The above-mentioned stator assembly, among other things, further includes a combined water channel, which includes an integrated spiral water channel and an extruded reciprocating water channel that are interconnected, the integrated spiral water channel is arranged in the integrated shell, and the extruded reciprocating water channel is arranged in the extruded shell.

[0010] In the above-mentioned stator assembly, the water inlet of the combined water channel is arranged on the extrusion reciprocating water channel, and the water outlet of the combined water channel is arranged on the integrated spiral water channel.

[0011] The above-mentioned stator assembly, wherein a water nozzle is provided on the extruded shell corresponding to the water inlet.

[0012] In the above-mentioned stator assembly, a plug is provided on the integrated housing.

[0013] In the above-mentioned stator assembly, the end cover is mounted on the extruded shell and the integrated shell by bolts, and the bolts penetrate the mounting holes of the end cover and the extruded shell to be connected with the integrated shell.

[0014] In the above-mentioned stator assembly, a glue sealing layer is provided between the end cover and the extruded shell.

[0015] In the above-mentioned stator assembly, a glue sealing layer is provided between the joint surfaces of the integrated shell and the extruded shell.

[0016] In order to better achieve the above-mentioned purpose, the utility model also provides a motor, which includes the above-mentioned stator assembly, and the integrated housing of the stator assembly is an integrally formed part with the motor housing and the controller box.

[0017] In order to better achieve the above-mentioned purpose, the utility model also provides an electric vehicle, which includes the above-mentioned motor.

[0018] The technical effects of the utility model are:

[0019] The stator assembly of the utility model has an extruded casing whose length can be increased as the stator core length increases, and is highly compatible; meanwhile, it avoids the need to develop multiple sets of integrated casing die-casting dies, thereby reducing costs.

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of an electric vehicle according to an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the motor structure of an embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the stator assembly structure of an embodiment of the utility model;

[0024] Figure 4 for Figure 3 Exploded diagram of

[0025] Figure 5 This is a schematic diagram of the combined water channel structure of an embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the integrated spiral waterway structure of an embodiment of the utility model;

[0027] Figure 7 This is a schematic diagram of the extrusion reciprocating water channel structure of one embodiment of the utility model.

[0028] Among them, the reference numerals

[0029] 1 Frame

[0030] 2 Travel wheels

[0031] 3 Motor

[0032] 31 stator assembly

[0033] 311 stator

[0034] 312 integrated housing

[0035] 3121 plug

[0036] 313 extruded housing

[0037] 3131 water nozzle

[0038] 314 end cap

[0039] 315 bolts

[0040] 316 combined waterway

[0041] 3161 integrated spiral waterway

[0042] 3162 squeeze round trip waterway

[0043] 317 water outlet

[0044] 318 water inlet

[0045] 32 rotors

[0046] 33 Cover

[0047] 4 Suspension bracket

[0048] 5 Rear axle DETAILED DESCRIPTION

[0049] The structural principle and working principle of the utility model are described in detail below in conjunction with the accompanying drawings:

[0050] See also Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of an electric vehicle according to an embodiment of the utility model. Figure 2 The figure is a schematic diagram of the structure of the motor 3 of an embodiment of the utility model. The electric vehicle of the utility model includes a frame 1, a running wheel 2 and a motor 3. The running wheel 2 is connected to the frame 1. The motor 3 is installed on the frame 1 through a suspension bracket 4 and is connected to the rear axle 5, and the running wheel 2 is driven by the rear axle 5. The motor 3 includes a rotor 32, a stator assembly 31 and a cover plate 33. The rotor 32 is installed in the stator assembly 31. The two ends of the rotor 32 are respectively supported on the end cover 314 and the integrated housing 312, and are coaxially arranged with the stator 311; the cover plate 33 is installed at the other end of the integrated housing 312, and the integrated housing 312 of the stator assembly 31 is an integrally formed part with the motor housing and the controller box. Since the composition, structure, relative position relationship, connection relationship and function of the other parts of the electric vehicle and the motor 3 are all relatively mature existing technologies, they are not described here. Only the stator assembly 31 of the utility model is described in detail below.

[0051] See also Figure 3 and Figure 4 , Figure 3 This is a schematic structural diagram of a stator assembly 31 according to an embodiment of the utility model. Figure 4 for Figure 3 The stator assembly 31 of the utility model comprises: an integrated shell 312; an extruded shell 313, one end of which is coaxially connected to one end of the integrated shell 312 and encloses a containing space together with the integrated shell 312; a stator 311, which is installed in the containing space and is coaxially arranged with the integrated shell 312 and the extruded shell 313; the sum of the length of the integrated shell 312 and the length of the extruded shell 313 is greater than the length of the stator 311, and the length of the extruded shell 313 is adjusted according to the length of the stator 311; and an end cover 314, which is installed at the other end of the extruded shell 313.

[0052] See also Figure 5-Figure 7 , Figure 5 This is a schematic diagram of the structure of the combined water channel 316 according to an embodiment of the utility model. Figure 6 This is a schematic diagram of the structure of an integrated spiral waterway 3161 according to an embodiment of the utility model. Figure 7The schematic diagram of the structure of the extruded reciprocating water channel 3162 of one embodiment of the utility model. The utility model also includes a combined water channel 316, which includes an integrated spiral water channel 3161 and an extruded reciprocating water channel 3162 that are interconnected. The integrated spiral water channel 3161 is arranged in the integrated shell 312, and the extruded reciprocating water channel 3162 is arranged in the extruded shell 313. Among them, the water inlet 318 of the combined water channel 316 is arranged on the extruded reciprocating water channel 3162, and the water outlet 317 of the combined water channel 316 is arranged on the integrated spiral water channel 3161. After the integrated shell 312 and the extruded shell 313 are combined, the water channels are connected; after the bolt 315 is connected to the end cover 314, the other end of the extruded shell 313 is blocked, and the joint surface is sealed with glue, thereby forming a complete water channel.

[0053] like Figure 4 As shown, a water nozzle 3131 is provided on the extruded shell 313 of this embodiment corresponding to the water inlet 318. A plug 3121 is provided on the integrated shell 312. The end cover 314 is installed on the extruded shell 313 and the integrated shell 312 by bolts 315, and the bolts 315 penetrate the mounting holes of the end cover 314 and the extruded shell 313 and are connected to the integrated shell 312. A glue sealing layer is provided between the end cover 314 and the extruded shell 313. A glue sealing layer is provided between the joint surfaces of the integrated shell 312 and the extruded shell 313.

[0054] The utility model combines a die-cast integrated housing 312 with an extruded housing. The extruded housing can be increased as the length of the stator 311 core increases. Assuming that the length of the die-cast integrated housing is L1, the longest length of the stator 311 core it is adapted to is L2, where L1>L2, then L1-L2=L (i.e., the space after the housing accommodates the core); if the length of the stator 311 core is L3 (L3>L2), then L1 cannot accommodate L3. In order to allow the housing to accommodate L3, an extruded housing with a length of L4 is set, where L1+L4-L3=L (i.e., the space after the combined housing accommodates the core). Wherein, L represents the space after "integrated housing length+extruded housing length-stator 311 core length", i.e., the space after the combined housing accommodates the core. That is, the extruded extruded shell 313 can be increased as the length of the stator 311 core increases. After being combined with the die-cast integrated shell 312, it can adapt to stator 311 cores of different lengths. It is highly compatible and avoids the need to develop multiple sets of integrated casing die-casting molds due to stator 311 cores of different lengths, thereby reducing costs.

[0055] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A stator assembly, characterized in that: include: Integrated housing; An extruded shell, one end of which is coaxially connected to one end of the integrated shell, and together with the integrated shell, forms an accommodation space; A stator is installed in the accommodating space and is coaxially arranged with the integrated housing and the extruded housing; the sum of the length of the integrated housing and the length of the extruded housing is greater than the length of the stator, and the length of the extruded housing is adjusted according to the length of the stator; as well as An end cover is mounted on the other end of the extruded shell.

2. The stator assembly according to claim 1, characterized in that: It also includes a combined water channel, which includes an integrated spiral water channel and an extruded round-trip water channel that are interconnected. The integrated spiral water channel is arranged in the integrated shell, and the extruded round-trip water channel is arranged in the extruded shell.

3. The stator assembly according to claim 2, characterized in that: The water inlet of the combined water channel is arranged on the extrusion reciprocating water channel, and the water outlet of the combined water channel is arranged on the integrated spiral water channel.

4. The stator assembly according to claim 3, characterized in that: A water nozzle is arranged on the extruded shell corresponding to the water inlet.

5. The stator assembly according to claim 3, characterized in that: The integrated housing is provided with a plug.

6. The stator assembly according to claim 1, characterized in that: The end cover is mounted on the extruded shell and the integrated shell by bolts, and the bolts penetrate through mounting holes of the end cover and the extruded shell to be connected with the integrated shell.

7. The stator assembly according to claim 6, characterized in that: A glue sealing layer is provided between the end cover and the extruded shell.

8. The stator assembly according to claim 1, characterized in that: A glue sealing layer is arranged between the joint surfaces of the integrated shell and the extruded shell.

9. A motor, characterized in that: It comprises the stator assembly as described in any one of claims 1 to 8, wherein the integrated housing of the stator assembly is an integrally formed part with the motor housing and the controller housing.

10. An electric vehicle, characterized in that: A motor comprising the motor described in claim 9.

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