Motor shell with heat dissipation structure

Abstract

The utility model discloses a motor housing with a heat dissipation structure, which comprises an inner housing main body, heat conduction connecting columns are installed on the periphery and one end of the inner housing main body in a penetrating manner, an outer housing main body is installed on the outer side of one end, far away from the inner housing main body, of each heat conduction connecting column, and second contact surface grooves are formed in the two ends of each heat conduction connecting column. The cooling liquid is guided between the outer shell body and the inner shell body to be used, the multiple sets of heat conduction connecting columns are connected between the outer shell body and the inner shell body, and the first contact face grooves, the second contact face grooves and the third contact face grooves are formed in the heat conduction connecting columns, so that the contact face between air in the inner shell body and the heat conduction connecting columns can be increased. The heat exchange efficiency of the cooling liquid in the inner shell body and the outside world is achieved through the contact face of the cooling liquid and the heat conduction connecting column and the contact face of the outside air and the inner shell body, the heat dissipation effect is further improved, and aging acceleration caused by the poor heat dissipation effect is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of motor casings, in particular to a motor casing with a heat dissipation structure. Background Art

[0002] With the continuous development of society, people's requirements for the comfort and environmental protection of existing main means of transportation, automobiles, are also constantly increasing. New energy vehicles can well meet the above requirements. Electric drive vehicles are a relatively typical type of new energy vehicle. The main driving force of electric drive vehicles depends on motors. In the actual application process, the core components of motors are generally assembled and used inside motor casings.

[0003] When the existing motor casings are in use, in order to ensure their sealing performance, some use the method of introducing heat exchange water pipes into the motor to achieve water-cooled heat dissipation. However, in this way, the contact surface between the coolant in the heat exchange water pipes and the air is relatively insufficient, resulting in limited heat dissipation effect and easy to cause insufficient heat dissipation efficiency of the internal components of the motor, leading to accelerated aging. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a motor casing with a heat dissipation structure, which solves the problems in the above background by adding parts between the double-layer casings for increasing strength and providing more heat exchange surface for the coolant.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A motor casing with a heat dissipation structure includes an inner casing main body.

[0007] Heat conduction connecting columns are installed through the four sides and one end of the inner casing main body, and an outer casing main body is installed on the outer side of the end of the heat conduction connecting column far from the inner casing main body. Second contact surface grooves are opened at both ends of the heat conduction connecting column. A first blocking ring is installed on the outer side of the end of the inner casing main body far from the heat conduction connecting column. A second blocking ring is installed on the inner side wall of the outer casing main body. A closed cover body is arranged at the end of the inner casing main body close to the first blocking ring.

[0008] An assembling mechanism for fixing the closed cover body and the inner casing main body is arranged on the outer casing main body.

[0009] As a further scheme of the utility model: The outer side of the heat conduction connecting column is evenly provided with first contact surface grooves, and the cross-sectional shape of the first contact surface grooves is triangular.

[0010] As a further scheme of the utility model: Both sides of the outer wall of the outer casing main body are communicated with coolant conveying pipes, and a mounting bracket is installed at the bottom of the outer casing main body.

[0011] As a further solution of the present utility model: the cross-sectional shape of the second contact surface groove is a flared shape, and third contact surface grooves are uniformly reserved on the inner side of the second contact surface groove, and the third contact surface grooves are arranged staggeredly with the first contact surface grooves.

[0012] As a further solution of the present utility model: a first limiting ring is installed at one end of the closed cover body close to the inner shell body, a second limiting ring is installed on the closed cover body outside the first limiting ring, and a sealing rubber pad is installed at one end of the second limiting ring close to the first blocking ring.

[0013] As a further solution of the present utility model: the assembling mechanism includes an installation ring, the installation ring is installed on the outside of the outer shell body, bolts are uniformly penetrated through one end of the installation ring, and the bolts penetrate through the closed cover body, and nuts are sleeved on the outside of the bolts at the end close to the inner shell body.

[0014] As a further solution of the present utility model: the central axis of the nut coincides with the central axis of the bolt, and the nut is threadedly connected with the bolt.

[0015] The beneficial effects of the present utility model:

[0016] By introducing the coolant between the outer shell body and the inner shell body for use, multiple groups of heat-conducting connection columns are connected between the outer shell body and the inner shell body, and first contact surface grooves, second contact surface grooves and third contact surface grooves are arranged on the heat-conducting connection columns, which can increase the contact surface between the air in the inner shell body and the heat-conducting connection columns, the contact surface between the coolant and the heat-conducting connection columns, and the contact surface between the external air and the inner shell body, so as to realize the heat exchange efficiency of the coolant in the inner shell body and the outside world, and further increase the heat dissipation effect, avoiding the easy aging acceleration caused by poor heat dissipation effect;

[0017] Through the double-layer design of the inner shell body and the outer shell body, and the overall thickness of the inner shell body and the outer shell body is lower than the wall thickness of the existing motor. Further, multiple groups of heat-conducting connection columns are used to connect and support between the inner shell body and the outer shell body, and no additional heat exchange pipes need to be added, so as to reduce the overall weight of the shell on the basis of ensuring strength and heat dissipation, reduce the load of the overall vehicle movement and increase the performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further describes the present utility model with reference to the drawings.

[0019] Figure 1 is the front view structural schematic diagram of the present utility model;

[0020] Figure 2 is the side view structural schematic diagram of the present utility model;

[0021] Figure 3 is the top view cross-sectional structural schematic diagram of the present utility model;

[0022] Figure 4 is the enlarged structural schematic diagram of part A of the present utility model Figure 3 ;

[0023] Figure 5 is the enlarged structural schematic diagram of part B of the present utility model Figure 3 ;

[0024] In the figure: 1, inner shell main body; 2, heat conduction connecting column; 3, outer shell main body; 4, first contact surface groove; 5, second contact surface groove; 6, third contact surface groove; 7, coolant delivery pipe; 8, mounting bracket; 9, first blocking ring; 10, second blocking ring; 11, closing cover body; 12, first limiting ring; 13, second limiting ring; 14, sealing rubber pad; 15, mounting ring; 16, bolt; 17, nut Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model

[0026] Please refer to Figures 1 - 5 As shown, the present utility model is a motor housing with a heat dissipation structure, including an inner shell main body 1. Heat conduction connecting columns 2 are installed through the four sides and one end of the inner shell main body 1, and an outer shell main body 3 is installed on the outer side of the end of the heat conduction connecting column 2 far from the inner shell main body 1. Second contact surface grooves 5 are opened at both ends of the heat conduction connecting column 2. A first blocking ring 9 is installed on the outer side of the end of the inner shell main body 1 far from the heat conduction connecting column 2. A second blocking ring 10 is installed on the inner side wall of the outer shell main body 3. A closing cover body 11 is arranged at one end of the inner shell main body 1 close to the first blocking ring 9. The inner shell main body 1, the heat conduction connecting column 2 and the outer shell main body 3 can be connected by welding or other methods to ensure the connection strength and sealing performance. At the same time, the overall thickness of the inner shell main body 1 and the outer shell main body 3 is lower than the thickness of the existing motor housing part. Due to the adoption of a double-layer structure and the support connection of the heat conduction connecting column 2, the overall weight can be reduced while ensuring the strength

[0027] As Figure 3 and Figure 4 shown, first contact surface grooves 4 are uniformly opened on the outer side of the heat conduction connecting column 2, and the cross-sectional shape of the first contact surface groove 4 is triangular, so that the overall contact surface between the coolant between the inner shell main body 1 and the outer shell main body 3 and the heat conduction connecting column 2 is greatly increased, thereby increasing the heat exchange efficiency between it and the heat conduction connecting column 2

[0028] As Figure 2 and Figure 3 shown, coolant delivery pipes 7 are connected to both sides of the outer wall of the outer shell main body 3, and a mounting bracket 8 is installed at the bottom of the outer shell main body 3. The two groups of coolant delivery pipes 7 are respectively connected to a water pump and a cooling device, so that a circulating water path is formed between the space between the inner shell main body 1 and the outer shell main body 3 and the cooling device, thereby realizing water cooling work;

[0029] As Figure 3 and Figure 4 shown, the cross-sectional shape of the second contact surface groove 5 is a flared shape, and third contact surface grooves 6 are uniformly reserved on the inner side of the second contact surface groove 5. The third contact surface grooves 6 and the first contact surface grooves 4 are arranged staggeredly, so that the contact surface between the air inside the inner shell main body 1 and the heat conduction connection columns 2 is greatly increased, and at the same time, the contact surface between the outside air and the heat conduction connection columns 2 is increased, thereby realizing an increase in the heat exchange efficiency between the inside of the inner shell main body 1 and the coolant and the outside environment through the heat conduction connection columns 2;

[0030] As Figure 3 and Figure 5 shown, a first limiting ring 12 is installed at one end of the closing cover body 11 close to the inner shell main body 1. A second limiting ring 13 is installed on the closing cover body 11 outside the first limiting ring 12, and a sealing rubber pad 14 is installed at one end of the second limiting ring 13 close to the first blocking ring 9. The first limiting ring 12 and the second limiting ring 13 can cooperate with the annular body at the edge of the closing cover body 11, so as to realize full limitation of the openings of the inner shell main body 1 and the outer shell main body 3, thereby avoiding deformation at the openings of the inner shell main body 1 and the outer shell main body 3 or leakage of the coolant inside the inner shell main body 1 and the outer shell main body 3;

[0031] As Figure 3 and Figure 5 shown, an assembling mechanism for fixing the closing cover body 11 and the inner shell main body 1 is provided on the outer shell main body 3. The assembling mechanism includes a mounting ring 15. The mounting ring 15 is installed on the outside of the outer shell main body 3. One end of the mounting ring 15 is uniformly penetrated by bolts 16, and the bolts 16 penetrate the closing cover body 11. A nut 17 is sleeved on the outside of the end of the bolt 16 close to the inner shell main body 1. The central axis of the nut 17 coincides with the central axis of the bolt 16, and the nut 17 is threadedly connected to the bolt 16. The inner shell main body 1 and the outer shell main body 3 are assembled and sealed by the bolts 16 and the nuts 17.

[0032] Working principle of the utility model: Install the components of the motor inside the inner shell main body 1. Fix the inner shell main body 1, the outer shell main body 3, and the closed cover body 11 firmly together through bolts 16 and nuts 17. Pass coolant between the inner shell main body 1 and the outer shell main body 3 through two groups of coolant delivery pipes 7, and form a circulating water path between the space between the inner shell main body 1 and the outer shell main body 3, the water pump, and the coolant cooling equipment. During subsequent use, the water pump drives the coolant to continuously enter the space between the inner shell main body 1 and the outer shell main body 3 from the cooling equipment and then flow back. Continuously repeat the above process to achieve the water cooling task. During this process, when the coolant passes between the inner shell main body 1 and the outer shell main body 3, heat exchange can be achieved between the outer wall of the inner shell main body 1 and the space inside the inner shell main body 1, and at the same time, partial heat exchange with the outside world can be achieved through the outer wall of the outer shell main body 3, reducing its own temperature and increasing the heat exchange effect with the inside of the inner shell main body 1. At the same time, since the second contact surface groove 5 and the third contact surface groove 6 are provided on the heat conduction connection column 2, sufficient heat exchange can be carried out between the inside of the inner shell main body 1 and the heat conduction connection column 2. The heat conduction connection column 2 can further fully exchange heat with the outside world, so as to realize the direct heat exchange between the inner shell main body 1 and the outside world. Further, the first contact surface groove 4 is provided on the heat conduction connection column 2, so as to increase the contact surface between the coolant and the heat conduction connection column 2, thereby increasing the heat exchange between the coolant and the heat conduction connection column 2, and further increasing the heat exchange effect between the inside of the inner shell main body 1 and the coolant. Through the above operations, the heat exchange and cooling effect inside the inner shell main body 1 can be fully guaranteed, and thus the situation of accelerated aging caused by insufficient heat dissipation effect can be avoided.

[0033] The above has described an embodiment of the present utility model in detail, but the content described is only the preferred embodiment of the present utility model and cannot be considered as used to limit the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model should still fall within the scope covered by the patent of the present utility model.

Claims

1. A motor housing with a heat dissipation structure, comprising an inner housing body (1), characterized in that: Thermal conduction connection columns (2) are installed through the periphery and one end of the inner housing body (1), and an outer housing body (3) is installed on the outer side of the end of the thermal conduction connection column (2) away from the inner housing body (1). Second contact surface grooves (5) are formed at both ends of the thermal conduction connection column (2). A first blocking ring (9) is installed on the outer side of the end of the inner housing body (1) away from the thermal conduction connection column (2). A second blocking ring (10) is installed on the inner side wall of the outer housing body (3). A closed cover body (11) is arranged at one end of the inner housing body (1) close to the first blocking ring (9); An assembly mechanism for fixing the closed cover body (11) and the inner housing body (1) is arranged on the outer housing body (3).

2. The motor housing with a heat dissipation structure according to claim 1, characterized in that, First contact surface grooves (4) are uniformly formed on the outer side of the thermal conduction connection column (2), and the cross-sectional shape of the first contact surface groove (4) is triangular.

3. A motor housing with a heat dissipation structure according to claim 1, characterized in that, Coolant delivery pipes (7) are communicated with both sides of the outer wall of the outer housing body (3), and a mounting bracket (8) is installed at the bottom of the outer housing body (3).

4. The motor housing with a heat dissipation structure according to claim 2, characterized in that, The cross-sectional shape of the second contact surface groove (5) is flared, and third contact surface grooves (6) are uniformly reserved on the inner side of the second contact surface groove (5). The third contact surface grooves (6) and the first contact surface grooves (4) are arranged staggeredly.

5. The motor housing with a heat dissipation structure according to claim 1, characterized in that, A first limiting ring (12) is installed at one end of the closed cover body (11) close to the inner housing body (1). A second limiting ring (13) is installed on the closed cover body (11) on the outer side of the first limiting ring (12), and a sealing rubber pad (14) is installed at one end of the second limiting ring (13) close to the first blocking ring (9).

6. The motor housing with a heat dissipation structure according to claim 1, characterized in that, The assembly mechanism includes a mounting ring (15). The mounting ring (15) is installed on the outer side of the outer housing body (3). Bolts (16) are uniformly penetrated through one end of the mounting ring (15), and the bolts (16) penetrate through the closed cover body (11). Nuts (17) are sleeved on the outer sides of the ends of the bolts (16) close to the inner housing body (1).

7. The motor housing with a heat dissipation structure according to claim 6, characterized in that, The central axis of the nut (17) coincides with the central axis of the bolt (16), and the nut (17) is threadedly connected with the bolt (16).

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