Liquid cooling motor and electric motorcycle

Abstract

The utility model provides a liquid cooling motor, which comprises a shell, a stator and a rotor, the stator and the rotor are arranged in the shell, the shell consists of a central shell, a first end cover and a second end cover, the first end cover and the second end cover are positioned on two sides of the central shell, and the central shell is provided with a water inlet and a water outlet which are communicated through a water channel; the water channel is arranged between the inner wall and the outer wall of the central shell and comprises a plurality of water storage cavities which are circumferentially arranged by taking the axis of the central shell as the center; the water storage cavities are distributed on the two sides of the center shell, a flow guide channel arranged along the axis of the center shell is arranged between the water storage cavities distributed on the two sides of the center shell, and the water storage cavities are sequentially communicated through the flow guide channel. The water channel is directly arranged in the middle of the center shell, the water channel and the center shell are integrally formed, an inner shell and an outer shell do not need to be arranged separately, the number of parts is reduced, the assembly difficulty of the parts is lowered, and meanwhile the heat dissipation effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a liquid-cooled motor and an electric motorcycle equipped with a liquid-cooled motor. Background Technology

[0002] In traditional liquid-cooled drive motor housing designs, the motor housing and end caps are integrated. The inner shell of the motor housing has threaded mounting holes machined on its end face, which are bolted to the bolt holes on the outer shell. The outer wall of the inner shell has circumferentially spirally distributed liquid-cooling annular grooves that cooperate with the outer shell wall to form cooling channels. This structure has insufficient sealing, making it prone to liquid leakage. Furthermore, the excessive ribs forming the cooling channels reduce the heat dissipation area, resulting in insufficient heat dissipation and increased costs. Sealing structures are provided at both ends between the inner and outer shells. The outer shell and end caps are integrally cast, resulting in high mold costs. The bolt structure between the inner and outer shells increases weight, makes processing more difficult, increases processing costs, and makes quality control difficult. Utility Model Content

[0003] The purpose of this invention is to provide a liquid-cooled motor that has simpler assembly and better heat dissipation.

[0004] The embodiments of this utility model can be implemented as follows:

[0005] This utility model provides a liquid-cooled motor, including a housing and a stator and rotor disposed inside the housing. The housing consists of a central housing and a first end cover and a second end cover located on both sides of the central housing. The central housing is provided with an inlet and an outlet connected by a water channel. The water channel is disposed between the inner wall and the outer wall of the central housing and includes a plurality of water storage cavities arranged circumferentially around the axis of the central housing. The plurality of water storage cavities are distributed on both sides of the central housing, and a guide channel is provided between the water storage cavities distributed on both sides of the central housing along the axis of the central housing, so that the water storage cavities are connected sequentially.

[0006] In an optional implementation, several adjacent water storage cavities located on the same side are directly connected in pairs to form a water storage cavity set.

[0007] In an optional embodiment, the water storage cavity is provided with a plurality of water passage holes, and the flow channel is connected to the water passage holes of the water storage cavity, and the water passage holes are configured as strips.

[0008] In an optional embodiment, a plurality of water passage holes are evenly spaced along the circumference of the central shell, and the number of water passage holes is equal to the number of water storage chambers.

[0009] In an optional embodiment, the water storage chamber set includes a first water storage chamber and a second water storage chamber. Water storage chamber set I is located near the first end cap, and water storage chamber set II is located near the second end cap. The first water storage chamber of one water storage chamber set I is connected to the first water storage chamber of one water storage chamber set II through a flow channel, and the second water storage chamber of the water storage chamber set II is connected to the second water storage chamber of another water storage chamber set I through another flow channel.

[0010] In an optional implementation, the cross-sectional area of ​​the water passage hole accounts for 1 / 3 to 1 / 4 of the cross-sectional area of ​​the water storage cavity.

[0011] In an optional embodiment, a sealing gasket mounting groove is provided at the junction of the first end cap and the central housing.

[0012] In an optional embodiment, there are at least two gasket mounting grooves. The first gasket mounting groove is formed on the end face of the central housing. The first end cap extends toward the inner wall of the central housing and has a second gasket mounting groove at the point where it fits against the inner wall of the central housing.

[0013] In an optional embodiment, the water storage cavity has an opening facing the end cap, and both the first and second end caps are provided with water troughs for sealing the opening of the water storage cavity.

[0014] On the other hand, this utility model provides an electric motorcycle equipped with any of the aforementioned liquid-cooled motors.

[0015] The beneficial effects of the liquid-cooled motor and electric motorcycle provided by this utility model embodiment include: the number of motor parts is reduced, the assembly difficulty of the parts is reduced, and the number of ribs in the water channel is reduced, resulting in a larger heat dissipation area and better heat dissipation effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a waterway structure according to an embodiment of this utility model;

[0018] Figure 2 A schematic diagram of the internal structure of the central shell provided by this utility model;

[0019] Figure 3 For Figure 2 The top view is the front view;

[0020] Figure 4 This is a partial structural diagram of a motor housing provided by the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Central shell; 2. First end cap; 3. Second end cap; 4. Inlet; 5. Outlet; 6. Flow channel; 7. Axis of the central shell; 8. Water passage hole; 9. First water storage chamber of water storage chamber group I; 10. Second water storage chamber of water storage chamber group I; 11. First water storage chamber of water storage chamber group II; 12. Second water storage chamber of water storage chamber group II; 13. First sealing gasket mounting groove; 14. Second sealing gasket mounting groove; 15. Water tank. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. The connections described and protected herein do not imply that there are no other components between them and that they are directly connected. They may also be indirectly connected through other intermediate components.

[0027] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other. The main protection point of this utility model lies in the structural layout rather than the circuit design, and the circuits set on the circuit board in the embodiments can be replaced according to the actual situation.

[0028] Please refer to Figures 1-3 This utility model provides a liquid-cooled motor, including a housing and a stator and rotor disposed inside the housing. The housing consists of a central housing 1 and a first end cover 2 and a second end cover 3 located on both sides of the central housing 1. The central housing 1 is provided with an inlet 4 and an outlet 5 connected by a water channel. The water channel is disposed between the inner wall and the outer wall of the central housing 1 and includes a plurality of water storage cavities arranged circumferentially with the axis 7 of the central housing 1 as the center. The plurality of water storage cavities are distributed on both sides of the central housing 1, and a guide channel 6 is provided between the water storage cavities distributed on both sides of the central housing 1 along the axis 7 of the central housing 1, so that the water storage cavities are connected sequentially.

[0029] The water channel is directly set in the middle of the central shell 1 (between the outer wall and the inner wall). The water channel and the central shell 1 are integrally formed, eliminating the need for separate inner and outer shells. This reduces the number of parts and the difficulty of assembling them. It also reduces the complexity of the mold and die-casting process. Furthermore, the structural design of the water storage cavity has a larger cooling area than the traditional long strip flow channel, thus improving the heat dissipation effect.

[0030] In an optional implementation, several adjacent water storage chambers located on the same side are directly connected in pairs to form a water storage chamber set. Specifically, a connecting rib is used, preferably located near the end cap, to reduce the likelihood of dead zones.

[0031] In an optional embodiment, the water storage cavity is provided with a plurality of water passage holes 8, and the flow channel 6 is connected to the water passage holes 8 of the water storage cavity. Preferably, the water passage holes 8 are set in a strip shape, so that the cross-sectional area of ​​the water passage is larger and the coolant circulates faster.

[0032] In an optional embodiment, a plurality of water passage holes 8 are evenly spaced along the circumference of the central shell 1, and each water storage cavity is provided with a water passage hole.

[0033] The water storage chamber structure can be an integral water storage chamber located at the inlet 4 and outlet 5, or it can be a water storage chamber assembly formed by joining two water storage chamber parts (using an integral molding form). In an optional embodiment, the water storage chamber assembly includes a first water storage chamber and a second water storage chamber. Water storage chamber assembly I is located near the first end cap 2, and water storage chamber assembly II is located near the second end cap 3. The first water storage chamber 9 of water storage chamber assembly I is connected to the first water storage chamber 11 of water storage chamber assembly II through a guide channel 6. The second water storage chamber 12 of water storage chamber assembly II is connected to the second water storage chamber 10 of another water storage chamber assembly I through another guide channel 6. In short, the water storage chamber assemblies on both sides are connected in series through the guide channels 6. It should be noted that the above-mentioned water storage chamber assembly I or water storage chamber assembly II is not a single water storage chamber assembly, but rather a collective name for a water storage chamber assembly located on one side.

[0034] In an optional embodiment, the cross-sectional area of ​​the water passage 8 is 1 / 3 to 1 / 4 of the cross-sectional area of ​​the water storage cavity. With this area ratio, the water passage 8 is neither too small, which would result in excessive water resistance, nor too large, which would lead to a large required water flow rate and pressure.

[0035] In an optional embodiment, a sealing gasket mounting groove is provided at the junction of the first end cover 2 and the central housing 1. Specifically, there are at least two sealing gasket mounting grooves. The first sealing gasket mounting groove 13 is provided on the end face of the central housing 1, and the first sealing gasket is located on the outer side of the water channel to prevent coolant leakage. The first end cover 2 extends towards the inner wall of the central housing 1 and a second sealing gasket mounting groove 14 is provided at the junction with the inner wall of the central housing 1. The second sealing gasket can prevent coolant from seeping into the motor. Similarly, the second end cover 3 can also adopt this structure to achieve better sealing.

[0036] In an optional embodiment, the water storage cavity has an opening facing the end cap. Both the first end cap 2 and the second end cap 3 are provided with a water trough 15 for sealing the opening of the water storage cavity. By opening the water trough 15, the weight of the end cap can be reduced, and the cost can also be reduced.

[0037] On the other hand, this utility model provides an electric motorcycle equipped with any of the above-mentioned liquid-cooled motors, and the electric motorcycle can be a two-wheeled, three-wheeled, or all-terrain vehicle.

[0038] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A liquid-cooled motor, comprising a housing and a stator and a rotor disposed inside the housing, wherein the housing consists of a central housing and a first end cover and a second end cover located on both sides of the central housing. Its features are: The central shell is provided with an inlet and an outlet connected by a water channel; The waterway is located between the inner and outer walls of the central shell and includes several water storage chambers arranged circumferentially around the central shell axis S. The plurality of water storage chambers are distributed on both sides of the central shell, and a flow guide channel is provided between the water storage chambers distributed on both sides of the central shell along the axis of the central shell, the flow guide channel making each water storage chamber connected in sequence.

2. The liquid-cooled electric machine of claim 1, wherein: The several adjacent water storage cavities located on the same side are directly connected to each other to form a water storage cavity set.

3. The liquid-cooled electric machine of claim 1, wherein: The water storage cavity has several water passage holes, and the flow guide channel is connected to the water passage holes of the water storage cavity. The water passage holes are arranged in a strip shape.

4. The liquid-cooled electric machine of claim 3, wherein: The plurality of water passage holes are evenly spaced along the circumference of the central shell, and the number of water passage holes is equal to the number of water storage chambers.

5. The liquid-cooled electric machine of claim 2, wherein: The water storage chamber set includes a first water storage chamber and a second water storage chamber. Water storage chamber set I is located near the first end cap, and water storage chamber set II is located near the second end cap. The first water storage chamber of one water storage chamber set I is connected to the first water storage chamber of one water storage chamber set II through a flow channel, and the second water storage chamber of the water storage chamber set II is connected to the second water storage chamber of another water storage chamber set I through another flow channel.

6. The liquid-cooled electric machine of claim 3, wherein: The cross-sectional area of ​​the water passage hole accounts for 1 / 3 to 1 / 4 of the cross-sectional area of ​​the water storage cavity.

7. The liquid-cooled electric machine of claim 1, wherein: A sealing gasket mounting groove is provided at the junction of the first end cap and the central housing.

8. The liquid-cooled electric machine of claim 7, wherein: The sealing gasket mounting groove is at least two, with the first sealing gasket mounting groove being formed on the end face of the central housing; the first end cap extends toward the inner wall of the central housing and has a second sealing gasket mounting groove at the point where it fits against the inner wall of the central housing.

9. The liquid-cooled electric machine of claim 1, wherein: The water storage cavity has an opening facing the end cap, and both the first and second end caps are provided with water troughs for sealing the opening of the water storage cavity.

10. An electric motorcycle characterized by: The electric motorcycle is equipped with any of the liquid-cooled motors described in claims 1-9.

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