An electric vehicle drive motor cooling device

Abstract

This utility model discloses a heat dissipation device for an electric vehicle drive motor, belonging to the field of drive motor technology. It mainly includes a main body structure and a heat dissipation mechanism. The main body structure includes a liquid-cooled front cover and a liquid-cooled rear cover, with a liquid-cooled front cover fixed to one side of the liquid-cooled front cover at the rim of the liquid-cooled front cover. The heat dissipation mechanism includes a guide pipe, with a cap and a sealing assembly sequentially fixed to one end near its end. These three components are sequentially embedded from one end of the main body structure, and one end of the guide pipe protrudes through the main body structure to one side of the liquid-cooled front cover. This utility model optimizes the overall structure, achieving rapid replacement of the sealing components while reducing the possibility of coolant leakage. This utility model is mainly used for heat dissipation of electric vehicle drive motors.

Description

Technical Field

[0001] This utility model belongs to the field of drive motor technology, and more specifically, it relates to a heat dissipation device for electric vehicle drive motors. Background Technology

[0002] With the rapid development of electric vehicles, thermal management of electric vehicle drive motors has become an urgent problem to be solved. Unlike internal combustion engines, electric vehicle drive motors mainly rely on electric power. Therefore, during high-intensity or long-term operation, the motor may generate a lot of heat, which will affect its stability and service life. Traditional heat dissipation methods are insufficient when electric vehicles are widely used, especially in the face of high-speed operation and frequent start-stop conditions. Therefore, electric vehicle drive motors mostly adopt liquid cooling systems.

[0003] After prolonged use, the seals at the connection points of the cooling system for the drive motor of an electric vehicle age, leading to leakage. This leakage will trigger a malfunction alarm in the electric vehicle. Traditional cooling system seals, once aged, adhere to the inside of the cover, making them difficult to remove and replace. Furthermore, the corrosion residue left inside the cover can affect the subsequent installation of seals. To address these technical problems, a cooling device for the drive motor of an electric vehicle is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a heat dissipation device for electric vehicle drive motors, which achieves the purpose of quick replacement of seals by optimizing the overall structure, while reducing the possibility of coolant leakage.

[0005] A heat dissipation device for an electric vehicle drive motor includes a main body and a heat dissipation mechanism. The main body includes a liquid-cooled front cover and a liquid-cooled rear cover, one side of which is provided with a liquid storage tank, and the liquid-cooled front cover is fixed at the rim of the liquid storage tank. The heat dissipation mechanism includes a guide pipe, one end of which is fixed with a cap and a sealing component in sequence near the end position. The three components are sequentially embedded from one end of the main body, and one end of the guide pipe protrudes through the main body to one side of the liquid-cooled front cover.

[0006] Preferably, the sealing assembly includes a limiting seat, the outer wall of which is provided with an annular seat and an embedding groove surrounding it, and the two are adjacent to each other; wherein, the inner side of the limiting seat is provided with a through hole, and the inner wall of the through hole is provided with a plurality of first slots.

[0007] Preferably, a first sealing element is fixed to one side of the limiting seat; a second sealing element is fixed in the embedding groove.

[0008] Preferably, the sealing component has a protective sleeve embedded in the through hole, and the outer wall of the protective sleeve is provided with multiple second slots.

[0009] Preferably, the cover is located on one side of the first sealing element and is embedded and fixedly connected to the main body mechanism.

[0010] Preferably, a raised ring is embedded between the sealing cap and the first sealing element, abutting against both.

[0011] Preferably, one end of the guide tube protrudes to one side of the cover, and the other end protrudes to one side of the liquid-cooled front cover.

[0012] Preferably, the outer wall of the guide tube is fixed with a plurality of fixing blocks, and the fixing blocks are fitted with the first slot and the second slot.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By optimizing the overall structure, the goal of quickly replacing seals can be achieved, while reducing the possibility of coolant leakage. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention;

[0016] Figure 2 This is a rear view of the present invention;

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is an assembly diagram of the present invention;

[0019] Figure 5 This is a partially enlarged schematic diagram of the present invention.

[0020] In the diagram, 1. Main body; 11. Liquid-cooled front cover; 111. Liquid reservoir; 112. Groove; 113. Insertion hole; 114. Fixing hole; 115. Fixing bolt; 12. Liquid-cooled rear cover; 2. Heat dissipation mechanism; 21. Guide tube; 211. Fixing block; 22. Cover; 23. Sealing assembly; 231. Annular seat; 232. Embedded groove; 233. Through hole; 234. First slot; 235. First seal; 236. Second seal; 237. Insertion block; 24. Protective sleeve; 241. Second slot; 25. Raised ring. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figures 1 to 5 As shown, a heat dissipation device for an electric vehicle drive motor includes a main body 1 and a heat dissipation mechanism 2. The main body 1 includes a liquid-cooled front cover 11 and a liquid-cooled rear cover 12, with a liquid storage tank 111 on one side. The liquid-cooled front cover 11 is fixed at the edge of the liquid storage tank 111. The heat dissipation mechanism 2 includes a guide pipe 21, with a cap 22 and a sealing component 23 sequentially fixed at one end near its end. These three components are sequentially embedded from one end of the main body 1. One end of the guide pipe 21 protrudes through the main body 1 to one side of the liquid-cooled front cover 11. The liquid-cooled front cover 11 is installed on the front side of the drive motor housing. A coolant circulation pipeline is integrated inside the drive motor, including a radiator, a brushless magnetic water pump, a temperature sensor, and an ECU controller. This allows the coolant to flow through the internal water circuit of the motor and electronic control device, carrying away heat, and then exchange heat through the radiator.

[0024] Optionally, the outer wall of the sealing component 23 is provided with an annular seat 231 and an embedding groove 232 surrounding it, and the two are adjacent to each other; wherein, the inner side of the sealing component 23 is provided with a through hole 233, and the inner wall of the through hole 233 is provided with a plurality of first slots 234.

[0025] like Figure 3 As shown, a raised ring 25 is integrally formed on one side of the cover 22. After installation, the raised ring 25 compresses the first sealing element 235 to enhance the sealing performance at the connection.

[0026] Optionally,

[0027] like Figures 3 to 5 As shown, the heat dissipation mechanism 2 includes a cover 22 and a guide pipe 21. The cover 22 is installed on one side of the liquid cooling front cover 11. The guide pipe 21 is fixedly connected to the inside of the cover 22. A fixing block 211 is symmetrically fixedly connected to one side of the guide pipe 21. The guide pipe 21 is connected to the coolant circulation pipeline to discharge the coolant and remove heat at the same time. A second sealing element 236 is fitted on one side of the sealing component 23 to enhance the sealing performance at the connection between the sealing component 23 and the liquid cooling front cover 11. The second sealing element 236 is embedded and is removed together with the sealing component 23. A protective sleeve 24 is fixedly connected to one side of the cover 22.

[0028] Optionally, the outer wall of the protective sleeve 24 is provided with a plurality of second slots 241.

[0029] Optionally, the first slot 234 and the second slot 241 are engaged with the fixing block 211. This serves to limit the flow guide tube 21 and prevent it from deflecting.

[0030] like Figures 3 to 5 As shown, in order to prevent the sealing assembly 23 from deflecting, the sealing assembly 23 is fixedly connected with the plug 237 at equal intervals on one side. The liquid cooling front cover 11 is provided with a groove 112 on one side and the plug holes 113 are provided at equal intervals. The plug 237 is fitted into the liquid cooling front cover 11 through the plug holes 113.

[0031] like Figure 4 As shown, in order to facilitate fixing the position of the cover 22, the liquid cooling front cover 11 has fixing holes 114 evenly distributed on one side, and fixing bolts 115 are threadedly connected evenly distributed inside the cover 22. One end of the fixing bolt 115 is threadedly connected to the liquid cooling front cover 11 through the fixing hole 114.

[0032] Optionally, the guide pipe 21 can be replaced with a heat pipe that is sealed at one end. An internal circulation liquid cooling pipeline can be integrated inside the heat pipe, and an inlet pipe and an outlet pipe can be additionally installed on the cover 22 for circulating the refrigeration oil. Heat is removed through the liquid cooling circulation inside the heat pipe, and the refrigeration oil is used as the heat dissipation medium at the connection between the cover 22 and the liquid cooling front cover 11.

[0033] Working principle: The coolant flows through the internal water circuit of the motor and electronic control device, then flows out through the guide pipe 21 to carry away heat, and then exchanges heat through the radiator. The first seal 235 and the second seal 236 enhance the sealing at the connection between the cover 22 and the liquid-cooled front cover 11 to prevent coolant leakage. After the first seal 235 ages, the fixing bolt 115 is removed, the cover 22 is pulled out a certain distance, and the cover 22 is rotated 90 degrees to make the fixing block 211 fit with the sealing assembly 23. Pulling the cover 22 causes the guide pipe 21 to separate from the liquid-cooled front cover 11. At the same time, the guide pipe 21 drives the sealing assembly 23 through the fixing block 211. 3. Remove the liquid-cooled front cover 11, take out the first seal 235 and the second seal 236 together, remove the sealing assembly 23 and scrape off the residue inside the liquid-cooled front cover 11, install the new seal on the sealing assembly 23, and then reinstall the sealing assembly 23 into the liquid-cooled front cover 11. Clean the cover 22 and install it into the liquid-cooled front cover 11, so that the guide tube 21 passes through the sealing assembly 23 and connects with the coolant circulation pipeline. The fixing block 211 at the guide tube 21 passes through the sealing assembly 23 through the first slot 234 (), fix the cover 22, and then connect the outer end of the guide tube 21 to the coolant circulation pipeline.

[0034] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electric vehicle drive motor heat dissipation device, comprising a main body mechanism (1), a heat dissipation mechanism (2), characterized in that: The main body (1) includes a liquid cooling front cover (11) and a liquid cooling rear cover (12) with a liquid storage tank (111) on one side, and the liquid cooling front cover (111) is fixed at the mouth of the liquid storage tank (111); the heat dissipation mechanism (2) includes a guide pipe (21), and a cap (22) and a sealing component (23) are fixed in sequence at one end near the end position. The three are embedded in sequence from one end of the main body (1), and one end of the guide pipe (21) passes through the main body (1) and protrudes to one side of the liquid cooling front cover (11).

2. The heat dissipation device for an electric vehicle drive motor according to claim 1, characterized in that: The outer wall of the sealing component (23) is provided with an annular seat (231) and an embedded groove (232) surrounding it, and the two are adjacent to each other; wherein, the inner side of the sealing component (23) is provided with a through hole (233), and the inner wall of the through hole (233) is provided with a plurality of first slots (234).

3. The heat dissipation device for an electric vehicle drive motor according to claim 2, characterized in that: A first seal (235) is fixed to one side of the sealing assembly (23); a second seal (236) is fixed in the embedding groove (232).

4. The heat dissipation device for an electric vehicle drive motor according to claim 2, characterized in that: The through hole (233) is fitted with a protective sleeve (24), and the outer wall of the protective sleeve (24) is provided with a plurality of second slots (241).

5. The heat dissipation device for an electric vehicle drive motor according to claim 1, characterized in that: The cover (22) is located on one side of the first sealing element (235) and is fitted and fixedly connected to the main body (1).

6. The heat dissipation device for an electric vehicle drive motor according to claim 5, characterized in that: The cap (22) and the first seal (235) are fitted with a protruding ring (25) that abuts against both.

7. The heat dissipation device for an electric vehicle drive motor according to claim 1, characterized in that: One end of the guide tube (21) protrudes to one side of the cover (22), and the other end protrudes to one side of the liquid-cooled front cover (11).

8. The heat dissipation device for an electric vehicle drive motor according to claim 7, characterized in that: The outer wall of the guide tube (21) is fixed with a plurality of fixing blocks (211), and the fixing blocks (211) are fitted with the first slot (234) and the second slot (241).

Images