Electric drive axle and new energy vehicle

Abstract

The utility model provides an electric drive axle and a new energy vehicle, and relates to the technical field of vehicle engineering, the electric drive axle provided by the utility model comprises an axle housing, a transmission and an oil guide piece; the transmission is provided with a main reduction gear with the axis extending in the horizontal direction, the axle housing is connected with the transmission, oil immersing part of the main reduction gear from bottom to top is arranged in the axle housing, the oil guide piece is connected with the axle housing or the transmission, the oil guide piece is provided with an oil guide face extending in the circumferential direction of the main reduction gear, and the oil stirred by the main reduction gear can be prevented from impacting the axle housing; the resistance to oil is small, impact on the axle housing caused by stirring in the oil can be relieved, on one hand, mechanical energy loss is reduced, on the other hand, temperature rise caused by the fact that the axle housing is impacted by the oil is reduced, the mechanical efficiency of the electric drive axle is improved, and the service life of the electric drive axle is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engineering, in particular to an electric drive bridge and a new energy vehicle. Background Art

[0002] See also Figure 1 The main reduction gear 201 of the traditional electric drive axle will stir the oil in the bridge housing 100 when rotating at high speed. The stirred oil will not hit the bridge housing 100, and the oil will generate heat due to the collision, which will cause the temperature of the electric drive axle to rise abnormally. Under high temperature conditions, the lubrication performance of the oil will decrease and the service life of the internal parts of the electric drive axle will be shortened. In addition, the stirring of the oil by the main reduction gear will cause a decrease in mechanical efficiency, thereby reducing the vehicle's endurance performance. Utility Model Content

[0003] The utility model aims to provide an electric drive axle and a new energy vehicle to alleviate the technical problem that the main reduction gear stirs the oil and the oil hits the axle housing to cause temperature rise.

[0004] In a first aspect, the electric drive axle provided by the utility model comprises: an axle housing, a transmission and an oil guide member;

[0005] The transmission has a main reduction gear with an axis extending in a horizontal direction, the axle housing is connected to the transmission, and the axle housing is provided with oil that partially immerses the main reduction gear from bottom to top;

[0006] The oil guide member is connected to the axle housing or the transmission, and has an oil guide surface extending along the circumference of the main reduction gear to prevent the oil stirred by the main reduction gear from impacting the axle housing.

[0007] In combination with the first aspect, the utility model provides a first possible implementation of the first aspect, wherein the distance between the oil guide surface and the tooth top circle of the main reduction gear is 6 mm to 10 mm.

[0008] In combination with the first aspect, the utility model provides a second possible implementation of the first aspect, wherein the oil guide member comprises: a first side baffle and a second side baffle connected to the oil guide surface;

[0009] The first side baffle plate is opposite to the second side baffle plate, and the main reduction gear is located between the first side baffle plate and the second side baffle plate.

[0010] In combination with the second possible implementation of the first aspect, the utility model provides a third possible implementation of the first aspect, wherein the first side baffle plate and the second side baffle plate are respectively 8 mm to 15 mm away from the main reduction gear.

[0011] In combination with the second possible implementation of the first aspect, the utility model provides a fourth possible implementation of the first aspect, wherein the oil guide member further includes: a first connecting plate and a second connecting plate;

[0012] The first connecting plate is connected to the first side baffle, the second connecting plate is connected to the second side baffle, and the first connecting plate and the second connecting plate are respectively connected to the transmission.

[0013] In combination with the fourth possible implementation of the first aspect, the utility model provides a fifth possible implementation of the first aspect, wherein a first rib is connected between the first connecting plate and the first side baffle, and a second rib is connected between the second connecting plate and the second side baffle.

[0014] In combination with the first aspect, the utility model provides a sixth possible implementation of the first aspect, wherein a lower edge rib is provided at the bottom end of the oil guide member, an upper edge rib is provided at the top end of the oil guide member, the oil guide surface extends from the lower edge rib to the upper edge rib, the lower edge rib and the upper edge rib both extend in a direction away from the main reduction gear, and the lower edge rib and the upper edge rib are respectively spaced from the transmission to form an oil channel.

[0015] In combination with the first aspect, the utility model provides a seventh possible implementation of the first aspect, wherein a surface of the oil guide member facing away from the main reduction gear is provided with longitudinal ribs extending along the circumference of the main reduction gear.

[0016] In combination with the first aspect, the utility model provides an eighth possible implementation of the first aspect, wherein a surface of the oil guide member facing away from the main reduction gear is provided with a transverse rib extending along the axial direction of the main reduction gear.

[0017] In a second aspect, the new energy vehicle provided by the utility model is equipped with the electric drive axle recorded in the first aspect.

[0018] The embodiments of the utility model bring the following beneficial effects: a transmission having a main reduction gear with an axis extending in a horizontal direction, a bridge housing connected to the transmission, and the bridge housing is provided with oil for partially immersing the main reduction gear from bottom to top, an oil guide member is connected to the bridge housing or the transmission, and the oil guide member has an oil guide surface extending along the circumferential direction of the main reduction gear, which can block the oil stirred by the main reduction gear from impacting the bridge housing, and has little resistance to the oil, which can alleviate the impact of the agitation in the oil on the bridge housing, thereby reducing mechanical energy loss on the one hand, and reducing the temperature rise caused by the oil impacting the bridge housing on the other hand, which is beneficial to improving the mechanical efficiency of the electric drive axle and extending the service life of the electric drive axle.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a cross-sectional view of an electric drive bridge in the prior art;

[0022] Figure 2 A schematic diagram of an electric drive bridge provided in an embodiment of the utility model;

[0023] Figure 3 A cross-sectional view of an electric drive bridge provided in an embodiment of the utility model;

[0024] Figure 4 Schematic diagram of the oil guide member of the electric drive axle provided in the embodiment of the utility model Figure 1 ;

[0025] Figure 5 Schematic diagram of the oil guide member of the electric drive axle provided in the embodiment of the utility model Figure 2 .

[0026] Icons: 100 - bridge housing; 200 - transmission; 201 - main reduction gear; 300 - oil guide; 301 - oil guide surface; 302 - first side baffle; 303 - second side baffle; 304 - first connecting plate; 305 - second connecting plate; 306 - first rib; 307 - second rib; 308 - lower edge rib; 309 - upper edge rib; 310 - longitudinal rib; 311 - transverse rib. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used to describe the difference in names, and cannot be understood as indicating or implying relative importance. The physical quantities in the formula, if not separately marked, should be understood as basic quantities of the basic units of the International System of Units, or derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 2 and Figure 3 As shown, the electric drive bridge provided by the embodiment of the utility model includes: a bridge housing 100, a transmission 200 and an oil guide member 300; the transmission 200 has a main reduction gear 201 whose axis extends in the horizontal direction, the bridge housing 100 is connected to the transmission 200, and the bridge housing 100 is provided with oil that partially immerses the main reduction gear 201 from bottom to top; the oil guide member 300 is connected to the bridge housing 100 or the transmission 200, and the oil guide member 300 has an oil guide surface 301 extending along the circumference of the main reduction gear 201, so as to prevent the oil stirred by the main reduction gear 201 from impacting the bridge housing 100.

[0031] The oil can soak the main reduction gear 201 and be stirred by the main reduction gear 201. However, the oil stirred by the main reduction gear 201 will flow along the oil guide surface 301. The oil amount stirred by the main reduction gear 201 is reduced under the obstruction of the oil guide 300, and the stirred oil is prevented from hitting the bridge housing 100, which reduces the mechanical energy loss on the one hand and reduces the heat caused by the oil impact on the other hand, and avoids the parts from being shortened due to overheating.

[0032] like Figure 3As shown, in the embodiment of the utility model, the distance between the oil guide surface 301 and the top circle of the main reduction gear 201 is 6mm to 10mm, which ensures that the main reduction gear 201 has sufficient oil for lubrication on the one hand, and prevents excessive oil from being stirred by the main reduction gear 201 on the other hand, so as to ensure the mechanical efficiency of the electric drive axle.

[0033] like Figure 3 and Figure 4 As shown, the oil guide member 300 includes: a first side baffle 302 and a second side baffle 303 connected to the oil guide surface 301; the first side baffle 302 is opposite to the second side baffle 303, and the main reduction gear 201 is located between the first side baffle 302 and the second side baffle 303, and is blocked by the first side baffle 302 and the second side baffle 303 to prevent excessive oil from being stirred by the main reduction gear 201.

[0034] Furthermore, the first side baffle plate 302 and the second side baffle plate 303 are respectively 8 mm to 15 mm away from the main reduction gear 201 .

[0035] Specifically, one of the first side baffle plate 302 and the second side baffle plate 303 is 8 mm to 11 mm away from the main reduction gear 201, and the other is 12 mm to 15 mm away from the main reduction gear 201. In other words, when the main reduction gear 201 is equipped with helical teeth, as the main reduction gear 201 rotates, the oil flows from top to bottom along the helical teeth toward the second side baffle plate 303, and the second side baffle plate 303 is farther away from the main reduction gear 201 than the first side baffle plate 302, thereby ensuring that the agitated oil can flow smoothly between the main reduction gear 201 and the second side baffle plate 303.

[0036] Furthermore, the oil guide member 300 also includes: a first connecting plate 304 and a second connecting plate 305; the first connecting plate 304 is connected to the first side baffle 302, the second connecting plate 305 is connected to the second side baffle 303, and the first connecting plate 304 and the second connecting plate 305 are respectively connected to the transmission 200.

[0037] Among them, the first connecting plate 304 and the second connecting plate 305 are respectively provided with a plurality of mounting holes, each mounting hole is configured with a boss portion, and a plurality of bolts are used to pass through the plurality of mounting holes one by one and are installed in the housing of the transmission 200, so that the oil guide member 300 is fixed relative to the transmission 200.

[0038] like Figure 4 As shown, a first rib 306 is connected between the first connecting plate 304 and the first side baffle 302 , and a second rib 307 is connected between the second connecting plate 305 and the second side baffle 303 , so as to improve the structural strength of the oil guide member 300 .

[0039] like Figure 3 and Figure 4As shown, the bottom end of the oil guide member 300 is provided with a lower edge rib 308, the top end of the oil guide member 300 is provided with an upper edge rib 309, the oil guide surface 301 extends from the lower edge rib 308 to the upper edge rib 309, the lower edge rib 308 and the upper edge rib 309 both extend in a direction away from the main reduction gear 201, and the lower edge rib 308 and the upper edge rib 309 are respectively spaced from the transmission 200 to form an oil channel. The oil can enter and exit the oil guide member 300 through the oil channel, and the oil can flow smoothly under the stirring of the main reduction gear 201. In addition, under the blocking effect of the lower edge rib 308 and the upper edge rib 309, the oil entering and exiting the oil guide member 300 has little effect on the oil in the axle housing 100, thereby preventing the oil flow from impacting the axle housing 100.

[0040] like Figure 3 and Figure 5 As shown, the surface of the oil guide member 300 facing away from the main reduction gear 201 is provided with a longitudinal rib 310 extending along the circumferential direction of the main reduction gear 201. In addition, the surface of the oil guide member 300 facing away from the main reduction gear 201 is provided with a transverse rib 311 extending along the axial direction of the main reduction gear 201. The structural strength of the oil guide member 300 is improved under the action of the longitudinal rib 310 and the transverse rib 311.

[0041] like Figure 2 and Figure 3 As shown, the new energy vehicle provided by the embodiment of the utility model is equipped with the electric drive axle recorded in the above-mentioned implementation manner.

[0042] In the embodiment of the utility model, the new energy vehicle has the technical effect of the above-mentioned electric drive axle, which will not be repeated here.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An electric drive bridge, characterized in that: include: Axle housing (100), transmission (200) and oil guide member (300); The transmission (200) has a main reduction gear (201) whose axis extends in a horizontal direction, the bridge housing (100) is connected to the transmission (200), and oil is provided in the bridge housing (100) to partially immerse the main reduction gear (201) from bottom to top; The oil guide member (300) is connected to the axle housing (100) or the transmission (200), and the oil guide member (300) has an oil guide surface (301) extending along the circumference of the main reduction gear (201) to prevent the oil stirred by the main reduction gear (201) from impacting the axle housing (100).

2. The electric drive axle according to claim 1, characterized in that: The distance between the oil guide surface (301) and the tooth top circle of the main reduction gear (201) is 6 mm to 10 mm.

3. The electric drive axle according to claim 1, characterized in that: The oil guide member (300) comprises: a first side baffle (302) and a second side baffle (303) connected to the oil guide surface (301); The first side baffle (302) is opposite to the second side baffle (303), and the main reduction gear (201) is located between the first side baffle (302) and the second side baffle (303).

4. The electric drive axle according to claim 3, characterized in that: The first side baffle (302) and the second side baffle (303) are respectively 8 mm to 15 mm away from the main reduction gear (201).

5. The electric drive axle according to claim 3, characterized in that: The oil guide member (300) further comprises: a first connecting plate (304) and a second connecting plate (305); The first connecting plate (304) is connected to the first side baffle (302), the second connecting plate (305) is connected to the second side baffle (303), and the first connecting plate (304) and the second connecting plate (305) are respectively connected to the transmission (200).

6. The electric drive axle according to claim 5, characterized in that: A first rib (306) is connected between the first connecting plate (304) and the first side baffle (302), and a second rib (307) is connected between the second connecting plate (305) and the second side baffle (303).

7. The electric drive axle according to any one of claims 1 to 6, characterized in that: The bottom end of the oil guide member (300) is provided with a lower edge rib (308), the top end of the oil guide member (300) is provided with an upper edge rib (309), the oil guide surface (301) extends from the lower edge rib (308) to the upper edge rib (309), the lower edge rib (308) and the upper edge rib (309) both extend in a direction away from the main reduction gear (201), and the lower edge rib (308) and the upper edge rib (309) are respectively spaced from the transmission (200) to form an oil channel.

8. The electric drive axle according to claim 1, characterized in that: A surface of the oil guide member (300) facing away from the main reduction gear (201) is provided with longitudinal ribs (310) extending along the circumference of the main reduction gear (201).

9. The electric drive axle according to claim 1, characterized in that: A surface of the oil guide member (300) facing away from the main reduction gear (201) is provided with a transverse rib (311) extending axially along the main reduction gear (201).

10. A new energy vehicle, characterized in that: The new energy vehicle is equipped with the electric drive axle described in any one of claims 1 to 9.

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