Electric drive assembly of vehicle and vehicle

Abstract

The utility model relates to an electric drive assembly and a vehicle. The electric drive assembly comprises a shell, a first one-way ventilation piece and a second one-way ventilation piece. The shell is provided with a first containing cavity and a second containing cavity, the shell comprises a partition wall, the partition wall divides the first containing cavity and the second containing cavity, the first containing cavity contains lubricating oil, the second containing cavity contains the electric control assembly, and the second containing cavity can be communicated with the outside of the shell. The first one-way ventilation piece penetrates through the partition wall and is provided with a first air inlet port and a first air outlet port which are communicated, the first air inlet port is communicated with the second containing cavity, and the first air outlet port is communicated with the first containing cavity. The second one-way ventilation piece penetrates through the shell and is provided with a second air inlet port and a second air outlet port which are communicated, the second air inlet port is communicated with the first containing cavity, and the second air outlet port is communicated with the outside of the shell. According to the technical scheme, the air pressure inside the electric drive assembly and the air pressure outside the electric drive assembly can be balanced.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and in particular, to an electric drive assembly for a vehicle and a vehicle. Background Art

[0002] In the prior art, the electric drive assembly of a vehicle includes a housing. During actual application, the air pressure in the accommodation cavity inside the housing may be greater than the air pressure outside the housing, or the air pressure in the accommodation cavity inside the housing may be less than the air pressure outside the housing, that is, the air pressure in the accommodation cavity inside the housing may be unbalanced with the air pressure outside the housing, thus making the working reliability of the electric drive assembly relatively low. Summary of the Utility Model

[0003] In view of this, the present application provides an electric drive assembly for a vehicle and a vehicle, which is beneficial to balancing the internal air pressure and the external air pressure of the electric drive assembly, thereby improving the working reliability of the electric drive assembly.

[0004] In a first aspect, the present application provides an electric drive assembly for a vehicle. The electric drive assembly includes a housing, a first one-way ventilation member, and a second one-way ventilation member. The housing is provided with a first accommodation cavity and a second accommodation cavity. The housing includes a partition wall that separates the first accommodation cavity and the second accommodation cavity. The first accommodation cavity is used to accommodate lubricating oil, and the second accommodation cavity is used to accommodate an electronic control component. The second accommodation cavity can communicate with the outside of the housing. The first one-way ventilation member penetrates through the partition wall. The first one-way ventilation member is provided with a first air inlet port and a first air outlet port that are connected and communicated. The first air inlet port communicates with the second accommodation cavity, and the first air outlet port communicates with the first accommodation cavity. The second one-way ventilation member penetrates through the housing. The second one-way ventilation member is provided with a second air inlet port and a second air outlet port that are connected and communicated. The second air inlet port communicates with the first accommodation cavity, and the second air outlet port communicates with the outside of the housing.

[0005] During actual application, since lubricating oil is stored in the first accommodation cavity, more oil mist or oil gas may be mixed into the gas in the first accommodation cavity, so that the air pressure in the first accommodation cavity increases. When the air pressure in the first accommodation cavity is greater than the air pressure outside the housing, the gas in the first accommodation cavity can be discharged to the outside of the housing through the second one-way ventilation member, so that the air pressure in the first accommodation cavity decreases until it is balanced with the air pressure outside the housing, making the working reliability of the electric drive assembly relatively high. During actual application, due to other factors that can affect air pressure balance, such as temperature change or oil quantity change, the air pressure in the first accommodation cavity may also be less than the air pressure outside the housing. At this time, the air pressure in the second accommodation cavity that communicates with the outside of the housing is the same as the air pressure outside the housing, that is, the air pressure in the second accommodation cavity is greater than the air pressure in the first accommodation cavity. Therefore, the gas outside the housing can enter the first accommodation cavity through the second accommodation cavity and then through the gas of the first one-way ventilation member, so that the air pressure in the first accommodation cavity is balanced with the air pressure outside the housing.

[0006] Optionally, the first one-way ventilation member includes a first main body portion, a first end portion, and a second end portion. The first end portion is connected to the second end portion through the first main body portion. The first end portion is provided with a first air inlet port, and the second end portion is provided with a first air outlet port. The first end portion penetrates through the partition wall, and both the first main body portion and the second end portion are located in the first accommodation cavity.

[0007] Optionally, the partition wall is provided with a threaded hole, and the first end portion is in threaded connection and sealed connection with the threaded hole.

[0008] Optionally, the first end portion, the first main body portion, and the second end portion are distributed along the height direction of the electric drive assembly, and the height of the first end portion is higher than the height of the second end portion.

[0009] Optionally, there is a set interval distance D1 between the first one-way ventilation member and the second one-way ventilation member, satisfying 50mm ≤ D1 ≤ 100mm.

[0010] Optionally, the second one-way ventilation member includes a second main body portion, a third end portion, and a fourth end portion. The third end portion is connected to the fourth end portion through the second main body portion. The third end portion is provided with a second air inlet port, and the fourth end portion is provided with a second air outlet port. The third end portion penetrates through the housing, and both the second main body portion and the fourth end portion are located outside the housing.

[0011] Optionally, the electric drive assembly of the present application further includes a two-way waterproof and breathable valve. The two-way waterproof and breathable valve penetrates through the housing. The two-way waterproof and breathable valve is provided with a first ventilation port and a second ventilation port that are communicated with each other. The first ventilation port is communicated with the outside of the housing, and the second ventilation port is communicated with the second accommodation cavity.

[0012] Optionally, the electric drive assembly of the present application further includes a motor and a reducer. Both the motor and the reducer are installed in the first accommodation cavity. The housing includes a first inner wall for enclosing the first accommodation cavity. There is a set interval distance D2 between the motor and the first inner wall, satisfying 4mm ≤ D2 ≤ 5mm.

[0013] Optionally, the second accommodation cavity is located above the first accommodation cavity.

[0014] In a second aspect, the present application provides a vehicle, which includes the electric drive assembly described above. Correspondingly, the vehicle also includes the technical effects of the electric drive assembly described above, which will not be elaborated here. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0016] Figure 1 It is a schematic cross-sectional structure diagram of the electric drive assembly provided by the present application in a specific embodiment.

[0017] Reference numerals:

[0018] 1 - Housing;

[0019] 11 - First accommodation cavity;

[0020] 12 - Second accommodation cavity;

[0021] 13 - Partition wall;

[0022] 14 - First inner wall;

[0023] 15 - Second inner wall;

[0024] 2 - First one-way ventilation part;

[0025] 21 - First main body part;

[0026] 22 - First end part;

[0027] 221 - First air inlet port;

[0028] 23 - Second end part;

[0029] 231 - First air outlet port;

[0030] 3 - Second one-way ventilation part;

[0031] 31 - Second main body part;

[0032] 32 - Third end part;

[0033] 321 - Second air inlet port;

[0034] 33 - Fourth end part;

[0035] 331 - Second air outlet port;

[0036] 4 - Bidirectional waterproof and breathable valve;

[0037] 41 - First ventilation port;

[0038] 42 - Second ventilation port;

[0039] 5 - Lubricating oil;

[0040] 6 - Electric motor;

[0041] 7 - Reducer;

[0042] 8 - Electric control component. Detailed implementation manners

[0043] For a better understanding of the technical solution of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0044] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.

[0045] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0046] It should be understood that the term " / and / " used herein is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0047] In the drawings, direction X and direction Y are perpendicular, direction Y represents the height direction, and direction Y points from above to below.

[0048] In a first aspect, an electric drive assembly of a vehicle provided by an embodiment of the present application is used to be installed in a hybrid vehicle or a pure electric vehicle, and the electric drive assembly is used to output power that can drive the vehicle. Please refer to Figure 1As shown in the figure, the electric drive assembly includes a housing 1, a first one-way ventilation member 2, and a second one-way ventilation member 3. The housing 1 is provided with a first accommodation cavity 11 and a second accommodation cavity 12. The housing 1 includes a partition wall 13 that separates the first accommodation cavity 11 and the second accommodation cavity 12. The first accommodation cavity 11 is used to accommodate lubricating oil 5, and the second accommodation cavity 12 is used to accommodate an electric control assembly 8 (including a control module and a power module). The second accommodation cavity 12 can communicate with the outside of the housing 1. The first one-way ventilation member 2 penetrates through the partition wall 13. The first one-way ventilation member 2 is provided with a first air inlet port 221 and a first air outlet port 231 that are connected and communicate with each other. The first air inlet port 221 communicates with the second accommodation cavity 12, and the first air outlet port 231 communicates with the first accommodation cavity 11. The second one-way ventilation member 3 penetrates through the housing 1. The second one-way ventilation member 3 is provided with a second air inlet port 321 and a second air outlet port 331 that are connected and communicate with each other. The second air inlet port 321 communicates with the first accommodation cavity 11, and the second air outlet port 331 communicates with the outside of the housing 1.

[0049] During the actual application process, since lubricating oil 5 is stored in the first accommodation cavity 11, more oil mist or oil gas may be mixed into the gas in the first accommodation cavity 11, so that the air pressure in the first accommodation cavity 11 increases. When the air pressure in the first accommodation cavity 11 is greater than the air pressure outside the housing 1, the gas in the first accommodation cavity 11 can be discharged to the outside of the housing 1 through the second one-way ventilation member 3, so that the air pressure in the first accommodation cavity 11 decreases until it is balanced with the air pressure outside the housing 1, making the working reliability degree of the electric drive assembly relatively high. During the actual application process, due to other factors such as temperature change or oil quantity change that can affect air pressure balance, the air pressure in the first accommodation cavity 11 may also be less than the air pressure outside the housing 1. At this time, the air pressure in the second accommodation cavity 12 that communicates with the outside of the housing 1 is the same as the air pressure outside the housing 1, that is, the air pressure in the second accommodation cavity 12 is greater than the air pressure in the first accommodation cavity 11. Therefore, the gas outside the housing 1 can enter the first accommodation cavity 11 through the second accommodation cavity 12 and then through the gas of the first one-way ventilation member 2, so that the air pressure in the first accommodation cavity 11 is balanced with the air pressure outside the housing 1.

[0050] The electric drive assembly further includes a motor 6 and a speed reducer 7, and both the motor 6 and the speed reducer 7 are installed in the first accommodation cavity 11. Since the air pressure in the first accommodation cavity 11 of the electric drive assembly according to the embodiment of the present application is not easily in a negative pressure state (a state where the air pressure in the first accommodation cavity 11 is less than the external air pressure of the housing 1), correspondingly, the air gap between the first inner wall 14 of the housing 1 that encloses to form the first accommodation cavity 11 and the motor 6 is not easily broken down by the voltage of the operating motor 6. Among them, there is a set spacing distance D2 between the motor 6 and the first inner wall 14, satisfying 4 mm ≤ D2 ≤ 5 mm. Among them, the spacing distance D2 can specifically be 4 mm, 4.1 mm, 4.2 mm, 4.3 mm, 4.4 mm, 4.5 mm, 4.6 mm, 4.7 mm, 4.8 mm, 4.9 mm or 5 mm.

[0051] Among them, the bottoms of the motor 6 and the speed reducer 7 are immersed in the lubricating oil 5, and the installation heights of the first one-way ventilation member 2 and the second one-way ventilation member 3 are both higher than those of the motor 6 and the speed reducer 7. Therefore, both the first one-way ventilation member 2 and the second one-way ventilation member 3 are higher than the liquid level of the lubricating oil 5.

[0052] It should be noted that both the first one-way ventilation member 2 and the second one-way ventilation member 3 have a one-way ventilation function, that is, gas can only enter the first accommodation cavity 11 from the second accommodation cavity 12 through the first one-way ventilation member 2, and gas can only be discharged from the first accommodation cavity 11 to the outside of the housing 1 through the second one-way ventilation member 3.

[0053] The structures of the first one-way ventilation member 2 and the second one-way ventilation member 3 may not have a waterproof and breathable membrane to reduce the possibility of the first one-way ventilation member 2 and the second one-way ventilation member 3 being blocked by oil stains.

[0054] Optionally, the first one-way ventilation member 2 includes a first main body portion 21, a first end portion 22 and a second end portion 23. The first end portion 22 is connected to the second end portion 23 through the first main body portion 21. The first end portion 22 is provided with a first air inlet port 221, and the second end portion 23 is provided with a first air outlet port 231. The first end portion 22 penetrates through the partition wall 13, and the first main body portion 21 and the second end portion 23 are both located in the first accommodation cavity 11.

[0055] Optionally, the partition wall 13 is provided with a threaded hole (not shown in the figure), and the first end portion 22 is threadedly connected to the threaded hole. In this setting, the partition wall can be adapted to different specifications of the first one-way ventilation member 2, and it is also convenient to replace the first one-way ventilation member 2 during the later maintenance of the electric drive assembly. Among them, the first end portion 22 is also hermetically connected to the threaded hole, for example, the first end portion 22 is bonded to the threaded hole using an oil-proof sealant.

[0056] In other embodiments (not shown in the figures), the first end portion 22 may be located within the second receiving cavity 12, the first main body portion 21 may pass through the partition wall 13, and the second end portion 23 may be located within the first receiving cavity 11.

[0057] In other embodiments (not shown in the figures), the first end portion 22 and the first main body portion 21 may be located within the second receiving cavity 12, and the second end portion 23 may pass through the partition wall 13.

[0058] Since the impact resistance of the electronic control component 8 is weaker than that of other structural components within the electric drive assembly, it is necessary to arrange the second receiving cavity 12 for accommodating the electronic control component 8 above the first receiving cavity 11, so that the bottom of the housing 1 can provide good protection for the electronic control component 8. Among them, the electronic control component 8 is fixedly installed on the second inner wall 15 of the housing 1 that encloses to form the second receiving cavity 12. Correspondingly, it is necessary to arrange the first end portion 22, the first main body portion 21, and the second end portion 23 along the height direction (direction Y) of the electric drive assembly, and the height of the first end portion 22 is higher than that of the second end portion 23, so that the gas within the second receiving cavity 12 enters the first receiving cavity 11 along the direction Y through the first end portion 22, the first main body portion 21, and the second end portion 23.

[0059] Optionally, there is a set spacing distance D1 between the first one-way ventilation member 2 and the second one-way ventilation member 3, satisfying 50mm ≤ D1 ≤ 100mm. Among them, the spacing distance D1 may specifically be 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, or 100mm. If the spacing distance D1 is too small, for example, the spacing distance D1 is less than 50mm, during the process of the dynamic balance of the air pressure within the first receiving cavity 11 and the air pressure outside the housing 1, the gas entering the first receiving cavity 11 through the first one-way ventilation member 2 may quickly be discharged to the outside of the housing 1 through the second one-way ventilation member 3, so that the oil and gas within the first receiving cavity 11 are not easily discharged to the outside of the housing 1. That is to say, the efficiency of discharging the oil and gas within the first receiving cavity 11 to the outside of the housing 1 is relatively low, so that a solidified oil film is likely to form on the upper surfaces of the motor 6 and the speed reducer 7. The solidified oil film has a relatively large thermal resistance and is likely to reduce the heat dissipation efficiency of the upper surfaces of the motor 6 and the speed reducer 7. If the spacing distance D1 is too large, for example, the spacing distance D1 is greater than 100mm, the size of the housing 1 and the size of the electric drive assembly are also too large, the weight of the electric drive assembly is also too large, the weight of the vehicle is also too large, and the energy consumption of the vehicle is also relatively large. Therefore, it is better for the spacing distance D1 to be within the range of 50mm to 100mm.

[0060] Among them, the separate arrangement of the first one-way ventilation member 2 and the second one-way ventilation member 3 also facilitates the separate replacement and maintenance of the first one-way ventilation member 2 or the second one-way ventilation member 3.

[0061] Optionally, the second one-way ventilation member 3 includes a second main body portion 31, a third end portion 32, and a fourth end portion 33. The third end portion 32 is connected to the fourth end portion 33 through the second main body portion 31. The third end portion 32 is provided with a second air inlet port 321, and the fourth end portion 33 is provided with a second air outlet port 331. The third end portion 32 penetrates through the housing 1, and both the second main body portion 31 and the fourth end portion 33 are located outside the housing 1. The fourth end portion 33, the second main body portion 31, and the third end portion 32 are distributed along the height direction (direction Y) of the electric drive assembly, and the height of the fourth end portion 33 is higher than the height of the third end portion 32. In this setting, the oil and gas in the first accommodation cavity 11 can be discharged to the outside of the housing 1 along the reverse direction of the direction Y through the third end portion 32, the second main body portion 31, and the fourth end portion 33.

[0062] Wherein, the third end portion 32 can be threadedly connected and sealed to another threaded hole (not shown in the figure) of the housing 1.

[0063] In addition, the specifications of the first one-way ventilation member 2 and the second one-way ventilation member 3 can be the same or different.

[0064] In other embodiments (not shown in the figure), the third end portion 32 can be located in the first accommodation cavity 11, the second main body portion 31 penetrates through the housing 1, and the fourth end portion 33 can be located outside the housing 1.

[0065] In other embodiments (not shown in the figure), the third end portion 32 and the second main body portion 31 can be located in the first accommodation cavity 11, and the fourth end portion 33 can penetrate through the housing 1.

[0066] Optionally, the electric drive assembly further includes a two-way waterproof and breathable valve 4. The two-way waterproof and breathable valve 4 penetrates through the housing 1. The two-way waterproof and breathable valve 4 is provided with a first ventilation port 41 and a second ventilation port 42 that are communicated with each other. The first ventilation port 41 is communicated with the outside of the housing 1, and the second ventilation port 42 is communicated with the second accommodation cavity 12. In this setting, when the gas outside the housing 1 enters the second accommodation cavity 12 through the two-way waterproof and breathable valve 4, the water vapor can be filtered, so as to reduce the possibility of the electronic control component 8 being corroded by the water vapor. Secondly, it also makes the gas entering the first accommodation cavity 11 not easily carry water vapor, thereby reducing the possibility of the motor 6 and the speed reducer 7 located in the first accommodation cavity 11 being corroded by the water vapor.

[0067] In other embodiments, the second accommodation cavity 12 can also be communicated through other accommodation cavities (not shown in the figure) in the housing 1, and the other accommodation cavities are then communicated with the outside of the housing 1 through the two-way waterproof and breathable valve 4.

[0068] In a second aspect, an embodiment of the present application provides a vehicle, which includes the electric drive assembly described above. Correspondingly, the vehicle also includes the technical effects of the electric drive assembly described above, which will not be elaborated here.

[0069] Among them, the vehicle can be a hybrid vehicle or a pure electric vehicle.

[0070] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An electric drive assembly for a vehicle, characterized in that, Comprising: A housing provided with a first accommodation chamber and a second accommodation chamber. The housing includes a partition wall that separates the first accommodation chamber and the second accommodation chamber. The first accommodation chamber is for accommodating lubricating oil, and the second accommodation chamber is for accommodating an electric control component. The second accommodation chamber can communicate with the outside of the housing; A first one-way ventilation member passing through the partition wall. The first one-way ventilation member is provided with a first intake port and a first outlet port that are in communication. The first intake port communicates with the second accommodation chamber, and the first outlet port communicates with the first accommodation chamber; A second one-way ventilation member passing through the housing. The second one-way ventilation member is provided with a second intake port and a second outlet port that are in communication. The second intake port communicates with the first accommodation chamber, and the second outlet port communicates with the outside of the housing.

2. The electric drive assembly of a vehicle according to claim 1, wherein, The first one-way ventilation member includes a first main body portion, a first end portion, and a second end portion. The first end portion is connected to the second end portion through the first main body portion. The first intake port is provided at the first end portion, and the first outlet port is provided at the second end portion; The first end portion passes through the partition wall, and the first main body portion and the second end portion are both located within the first accommodation chamber.

3. The electric drive assembly of a vehicle according to claim 2, characterized in that, The partition wall is provided with a threaded hole, and the first end portion is threadedly and sealingly connected to the threaded hole.

4. The electric drive assembly of a vehicle according to claim 2, characterized in that, The first end portion, the first main body portion, and the second end portion are distributed along the height direction of the electric drive assembly, and the height of the first end portion is higher than the height of the second end portion.

5. The electric drive assembly of a vehicle according to any one of claims 1 to 4, characterized in that, There is a set spacing distance D1 between the first one-way ventilation member and the second one-way ventilation member, satisfying 50mm ≤ D1 ≤ 100mm.

6. The electric drive assembly of a vehicle according to any one of claims 1 to 4, characterized in that The second one-way ventilation member includes a second main body portion, a third end portion, and a fourth end portion. The third end portion is connected to the fourth end portion through the second main body portion. The second intake port is provided at the third end portion, and the second outlet port is provided at the fourth end portion; The third end portion passes through the housing, and the second main body portion and the fourth end portion are both located outside the housing.

7. The electric drive assembly of a vehicle according to any one of claims 1 to 4, characterized in that It further includes a two-way waterproof and breathable valve passing through the housing. The two-way waterproof and breathable valve is provided with a first ventilation port and a second ventilation port that are in communication. The first ventilation port communicates with the outside of the housing, and the second ventilation port communicates with the second accommodation chamber.

8. The electric drive assembly of a vehicle according to any one of claims 1 to 4, characterized in that It further includes a motor and a speed reducer. Both the motor and the speed reducer are installed within the first accommodation chamber. The housing includes a first inner wall for enclosing to form the first accommodation chamber. There is a set spacing distance D2 between the motor and the first inner wall, satisfying 4mm ≤ D2 ≤ 5mm.

9. The electric drive assembly of a vehicle according to any one of claims 1 to 4, characterized in that, The second accommodation chamber is located above the first accommodation chamber.

10. A vehicle, characterized in that, An electric drive assembly of a vehicle according to any one of claims 1 to 9.

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