A new energy motor shell

Abstract

The application relates to the technical field of range extender generators, in particular to a new energy motor shell, which is provided with a water inlet and a water outlet on the shell, is provided with a first half annular water channel, a second half annular water channel and an annular water channel in the shell, the first half annular water channel and the second half annular water channel are symmetrically arranged in the diameter direction and are located at the same layer, the water inlet, the first half annular water channel, the annular water channel, the second half annular water channel and the water outlet are sequentially connected to form a series water channel, the first half annular water channel, the second half annular water channel and the annular water channel all include water channels which are arranged in parallel in more than two layers; the annular water channel is provided with an annular fin in the shell; and the annular fin is arranged on one side of the second layer annular water channel. The parallel annular water channel is adopted, the annular heat dissipation fin is additionally arranged in the heat dissipation water channel, the distribution of the cooling liquid is more reasonable, the motor heat dissipation condition is improved, the heat dissipation area is increased, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of range extender generators, and in particular to a casing for a new energy motor. Background Art

[0002] The water-cooling casing of the new energy motor adopts spiral water channels, circular water channels, zigzag water channels, etc., and is mainly manufactured by pressure casting or profile processing.

[0003] For example, the motor cooling water jacket disclosed in Chinese patent CN202651996U adopts an annular series water channel structure, including a water channel covering the motor and a water inlet and a water outlet. The water channel is a series-connected meandering maze structure, and the water inlet and the water outlet are respectively located at both ends of the water channel.

[0004] Another example is a motor water channel cooling structure and a motor disclosed in Chinese patent CN212231278U, which adopts a zigzag series water channel structure, including a water inlet, a water outlet and a water channel; the water inlet and the water outlet are respectively arranged at the two ends of the water channel; the water inlet and the water outlet are arranged on the same side of the water channel, and the water inlet and the water outlet are respectively arranged at two opposite positions on the water channel; the water channel is a zigzag maze structure connected in series.

[0005] Conventional water-cooled inner-rotor motors have cooling channels in their housings, which serve both as a heat sink and a supporting structure. Most of the heat generated by the motor windings and core is transferred from the outer surface of the stator core to the housing. The housing then transfers the heat to the coolant in the channels, which then dissipates the heat. Therefore, the outer surface of the motor's stator core is the primary heat sink.

[0006] The main heat dissipation surface of the outer rotor motor is the inner surface of the stator core. The heat dissipation area of ​​the inner surface of the stator core is relatively insufficient, which is greatly reduced compared with the heat dissipation area of ​​the inner rotor motor core, and the heat dissipation conditions of the motor are poor; the annular series water channel or the meander series water channel has a long cooling route for the coolant, unreasonable coolant drainage, and low heat dissipation efficiency; the water channel structure adopts one-piece casting, which is costly and has poor maintainability. Summary of the Invention

[0007] The present invention relates to the technical field of range extender generators, and specifically to a casing for a new energy motor. The casing adopts parallel annular water channels, and annular cooling fins are added to the cooling water channels. At the same time, the cooling liquid is guided to be distributed more reasonably, thereby improving the heat dissipation conditions of the motor, increasing the heat dissipation area, and improving the heat dissipation efficiency.

[0008] The technical solutions of the present invention are as follows:

[0009] A housing for a new energy motor comprises an inner housing and an outer housing that cooperate with each other, wherein the outer housing forms an annular cavity, the inner housing is press-fitted into the inner ring of the outer housing, and both end surfaces of the inner housing are welded and sealed to the outer housing;

[0010] The shell is provided with a water inlet and a water outlet, and the shell is provided with a first semi-annular water channel, a second semi-annular water channel and an annular water channel, the first semi-annular water channel and the annular water channel are coaxially arranged and arranged in layers, the first semi-annular water channel and the second semi-annular water channel are symmetrically arranged in the diameter direction and are located in the same layer, the water inlet, the first semi-annular water channel, the annular water channel, the second semi-annular water channel and the water outlet are connected in front to form a series water channel, that is, to constitute a two-layer water channel cooling;

[0011] The first semi-annular waterway, the second semi-annular waterway and the annular waterway all include waterways arranged in parallel in two or more layers; the inner ring of the outer shell is provided with an annular fin, and the annular fin is arranged on one side of the first semi-annular waterway.

[0012] The present invention adopts a two-layer structure of series water channels, and each water channel is provided with more than two layers of water channels, that is, multiple water channels are connected in parallel, which avoids the problem of dead zone caused by excessive flow area of ​​a single water channel in the prior art. The water flow distribution is more uniform, the coolant distribution is more reasonable, and the heat dissipation effect is good.

[0013] In addition, the inner ring of the shell is provided with annular fins, which improves the heat dissipation effect.

[0014] The present invention also adopts a combination of a separately arranged inner shell and an outer shell to form a motor shell, which has a simple process and low cost.

[0015] Preferably, the water channel is annular and is evenly spaced along the axial direction of the housing. The use of multiple water channels arranged axially increases the heat dissipation area and guides the coolant to be distributed more reasonably, thereby achieving a good heat dissipation effect.

[0016] Preferably, the water inlet and the water outlet are arranged on the same side of the housing. The water inlet and the water outlet are arranged coaxially. The two water inlets are arranged close to each other for ease of processing and disassembly, and for ease of connection to external pipes.

[0017] Preferably, the inner and outer shells are welded and sealed, and the inner and outer shells cooperate to form a sealed flow channel. That is, the inner and outer shells cooperate to form a sealed first semi-annular waterway, a second semi-annular waterway, and an annular waterway. All waterways are formed only after the inner and outer shells cooperate. This simplifies the process and facilitates assembly and disassembly.

[0018] Specifically, a junction box is provided on the outside of the shell, and a first inner ring stop for mounting the motor stator is provided in the inner cavity of the shell; the first inner ring stop is provided on the outside of the first semi-annular waterway.

[0019] Preferably, the left end of the inner shell has an annular step. The inner shell includes a first reserved welding groove on the left end face, a first inner ring stop for mounting the rotary transformer stator, and a second reserved welding groove on the right end face. The outer shell is provided with a second inner ring stop, and the right end face of the inner shell mates with the second inner ring stop. The first reserved welding groove is used for welding and sealing the left end face of the inner shell to the outer shell, and the second reserved welding groove is used for welding and sealing the right end face of the inner shell to the outer shell. After the inner shell is press-fitted into the outer shell, it is welded and sealed at both ends, ensuring the sealing of the first semi-annular waterway, the second semi-annular waterway, and the annular waterway, and improving the operating stability of the casing.

[0020] Beneficial effects of the present invention:

[0021] A two-layer series water channel structure is adopted, and each water channel is provided with more than two layers of water channels. At the same time, multiple water channels are connected in parallel, which avoids the problem of dead zone caused by excessive flow area of ​​a single water channel in the existing technology. The water flow distribution is more uniform, the coolant distribution is more reasonable, and the heat dissipation effect is good.

[0022] The inner ring of the housing is equipped with annular fins to improve heat dissipation. The bottom has an observation window and four observation holes for measuring the stator-rotor clearance and observing the internal status of the motor. Four screw holes are provided for easy disassembly of the housing.

[0023] The present invention also adopts a combination of a separately arranged inner shell and an outer shell to form a motor shell, and the assembly is completed by welding the two ends, which has a simple process and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a casing for a new energy motor described in the present invention.

[0025] Figure 2 It is a cross-sectional structural diagram of a casing for a new energy motor described in the present invention.

[0026] Figure 3 It is a front view of the housing described in the present invention.

[0027] Figure 4 is a cross-sectional view of the housing of the present invention.

[0028] Figure 5 yes Figure 4 A magnified view of the structure in the middle.

[0029] Figure 6 It is a water channel casting model diagram of the cooling water channel described in the present invention.

[0030] Figure 7 It is a front view of the inner shell described in the present invention.

[0031] Figure 8It is a cross-sectional view of the inner shell of the present invention.

[0032] In the figure: 1-inner shell, 11-first reserved welding groove, 12-second reserved welding groove, 13-first inner ring stop, 2-outer shell, 21-junction box, 22-first semi-annular water channel, 23-first inner ring stop, 24-annular water channel, 25-annular fin, 26-second inner ring stop, 27-second semi-annular water channel, 3-water inlet, 4-water outlet, 5-water channel. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The exemplary embodiments of the present invention and their description are used to explain the present invention and do not constitute improper limitations on the present invention.

[0034] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "front", "back", etc., indicating directions or positional relationships, are based on the directions 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 structure referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] Example 1:

[0036] like Figure 1 and Figure 2 As shown, a housing for a new energy motor includes an inner housing 1 and an outer housing 2 that cooperate with each other. The outer housing 2 is provided with a water inlet 3 and a water outlet 4.

[0037] like Figure 6 As shown, a first semi-annular waterway 22, a second semi-annular waterway 27 and an annular waterway 24 are provided in the outer shell 2. The first semi-annular waterway 22 and the second semi-annular waterway 27 are symmetrically arranged in the diameter direction and are located at the same layer. The water inlet 3, the first semi-annular waterway 22, the annular waterway 24, the second semi-annular waterway 27 and the water outlet 4 are first connected to form a series waterway. The first semi-annular waterway 22, the second semi-annular waterway 27 and the annular waterway 24 all include more than two layers of parallel waterways 5, that is, the first semi-annular waterway 22, the second semi-annular waterway 27 and the annular waterway 24 all include more than two parallel waterways 5.

[0038] like Figure 4 As shown, the inner ring of the outer shell 2 is provided with an annular fin 25 , and the annular fin 25 is provided on one side of the first semi-annular water channel 22 .

[0039] The working principle of the cooling water channel of this embodiment is as follows:

[0040] like Figure 6As shown, the inner shell 1 is press-fitted into the inner ring of the outer shell 2, and the two end surfaces of the inner shell 1 are welded and sealed to the outer shell 2, thereby forming a first semi-annular water channel 22, annular water channel 24, and a second semi-annular water channel 27. The coolant passes through the water inlet 3 and the first semi-annular water channel 22, and then enters the annular water channel 24 located in the next layer. After flowing through the annular water channel 24 for a circle, it flows back to the second semi-annular water channel 27 in the upper layer, and finally flows out from the water outlet 4. The flow process forms a series of water channels. The first semi-annular water channel 22, the annular water channel 24, and the second semi-annular water channel 27 are all provided with more than two layers of small water channels 5. The coolant flows in each water channel 5, avoiding dead zones.

[0041] Example 2:

[0042] like Figures 1 to 4 As shown, in this embodiment, a housing for a new energy motor includes an inner housing 1 and an outer housing 2 that cooperate with each other. The outer housing 2 forms an annular cavity. The inner housing 1 is press-fitted into the inner ring of the outer housing 2. The two end surfaces of the inner housing 1 are welded and sealed to the outer housing 2.

[0043] like Figure 6 As shown, in this embodiment, the shell 2 is provided with a water inlet 3 and a water outlet 4, and the shell 2 is provided with a first semi-annular water channel 22, a second semi-annular water channel 27 and an annular water channel 24. The first semi-annular water channel 22 and the annular water channel 24 are coaxially arranged and layered. The first semi-annular water channel 22 and the second semi-annular water channel 27 are symmetrically arranged in the diameter direction and are located in the same layer. The water inlet 3, the first semi-annular water channel 22, the annular water channel 24, the second semi-annular water channel 27 and the water outlet 4 are connected in series to form a water channel, that is, to form a two-layer water channel cooling;

[0044] like Figure 6 As shown, in this embodiment, the first semi-annular waterway 22, the second semi-annular waterway 27 and the annular waterway 24 all include two or more layers of waterways 5 arranged in parallel;

[0045] like Figure 4 As shown, the inner ring of the outer shell 2 is provided with an annular fin 25 , and the annular fin 25 is provided on one side of the first semi-annular water channel 22 .

[0046] like Figure 6 As shown, in this embodiment, the water channel 5 is an annular structure and is evenly spaced along the axial direction of the housing 2. The use of multiple water channels 5 arranged axially increases the heat dissipation area and guides the coolant to be distributed more reasonably, thereby achieving a good heat dissipation effect.

[0047] In this embodiment, the water inlet 3 and the water outlet 4 are arranged on the same side of the housing 2. The water inlet 3 and the water outlet 4 are coaxially arranged. The two water inlets are arranged close to each other for easy processing and disassembly, and for easy connection of external pipes.

[0048] In this embodiment, the inner shell 1 and outer shell 2 are welded and sealed, and the inner shell 1 and outer shell 2 cooperate to form a sealed flow channel. Specifically, the inner shell 1 and outer shell 2 cooperate to form a sealed first semi-annular water channel 22, a second semi-annular water channel 27, and annular water channel 24. All water channels are formed only after the inner shell 1 and outer shell 2 cooperate. This simplifies the process and facilitates assembly and disassembly.

[0049] In this embodiment, a junction box 21 is provided outside the shell 2 , and a first inner ring stop 23 for mounting the motor stator is provided inside the shell 2 ; the first inner ring stop 23 is provided outside the first semi-annular waterway 22 .

[0050] like Figure 7 and Figure 8 As shown, in this embodiment, the left end of the inner shell 1 has an annular step, and the inner shell 1 includes a first reserved welding groove 11 on the left end face, a first inner ring stop 13 for mounting the rotary transformer stator, and a second reserved welding groove 12 on the right end face. The outer shell 2 is provided with a second inner ring stop 26;

[0051] like Figure 5 As shown, the right end face of the inner shell 1 mates with the second inner ring stop 26. The first reserved welding groove 11 is used for welding and sealing the left end face of the inner shell 1 and the outer shell 2, and the second reserved welding groove 12 is used for welding and sealing the right end face of the inner shell 1 and the outer shell 2. After the inner shell 1 is press-fitted into the outer shell 2, it is sealed by welding at both ends, ensuring the sealing of the first semi-annular water channel 22, the second semi-annular water channel 27, and the annular water channel 24, and improving the operating stability of the casing.

Claims

1. A housing for a new energy motor, comprising an inner housing (1) and an outer housing (2) that cooperate with each other, characterized in that: The shell (2) is provided with a water inlet (3) and a water outlet (4), and the shell (2) is provided with a first semi-annular waterway (22), a second semi-annular waterway (27) and an annular waterway (24), the first semi-annular waterway (22) and the second semi-annular waterway (27) are symmetrically arranged in the diameter direction and are located at the same layer, the water inlet (3), the first semi-annular waterway (22), the annular waterway (24), the second semi-annular waterway (27) and the water outlet (4) are connected end to end in sequence to form a series waterway, the first semi-annular waterway (22) ), the second semi-annular waterway (27) and the annular waterway (24) all include waterways (5) arranged in parallel in two or more layers; an annular fin (25) is provided on the inner ring of the outer shell (2), and the annular fin (25) is arranged on one side of the first semi-annular waterway (22); the water inlet (3) and the water outlet (4) are arranged on the same side of the outer shell (2); the water inlet (3) and the water outlet (4) are coaxially arranged; the inner shell (1) and the outer shell (2) are welded and sealed, and the inner shell (1) and the outer shell (2) cooperate to form a sealed flow channel.

2. The housing for a new energy motor according to claim 1, characterized in that: A junction box (21) is provided outside the housing (2), and a first inner ring stop (23) for mounting a motor stator is provided in the inner cavity of the housing (2); the first inner ring stop (23) is provided outside the first semi-annular waterway (22).

3. A new energy motor housing according to claim 1 or 2, characterized in that: The inner shell (1) comprises a first reserved welding groove (11) on the left end face, a first inner ring stop (13) for mounting the stator of the rotary transformer, and a second reserved welding groove (12) on the right end face; a second inner ring stop (26) is provided on the outer shell (2); the right end face of the inner shell (1) is matched with the second inner ring stop (26).

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