Drive axle, vehicle, and control method for drive axle

Abstract

The present application relates to the technical field of vehicles. Provided are a drive axle, a vehicle, and a control method for a drive axle. A shell encloses an accommodating space therein; a separator protrudes from the bottom of the shell inwards the accommodating space, and divides the accommodating space into a first accommodating cavity and a second accommodating cavity; a driven gear is provided in the first accommodating cavity; the separator is provided with a communicating hole in communication with the first accommodating cavity and the second accommodating cavity; and a blocking member is provided at the communicating hole, and the blocking member can open or close the communicating hole. When a vehicle is in a harsh working condition, the blocking member opens the communicating hole, such that lubricating oil in the second accommodating cavity can enter the first accommodating cavity to supplement lubricating oil in the first accommodating cavity, so as to ensure the oil churning quantity of the driven gear. When the vehicle is in a general working condition, the blocking member closes the communicating hole, such that the lubricating oil in the second accommodating cavity cannot enter the first accommodating cavity. Thus, the oil churning quantity of the driven gear when the vehicle is in the general working condition is reduced, such that the churning loss is reduced, and the transmission efficiency of the drive axle is improved.

Description

Drive axle, vehicle and control method of drive axle

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 2024104301393, filed on April 10, 2024, and entitled "Drive axle, vehicle and control method of drive axle", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of vehicles, in particular to a drive axle, a vehicle and a control method of the drive axle. BACKGROUND

[0004] During driving, the drive axle needs to be lubricated in real time. In the prior art, the lubrication is generally performed by splash lubrication. Specifically, the drive axle has a certain amount of lubricating oil in the shell. During the operation of the drive axle, the gear brings up the lubricating oil for lubrication and cooling. Considering that the surface slip rate is large during the meshing process of the driving bevel gear and the driven bevel gear, the oiling amount is determined based on the most severe working condition to ensure sufficient lubrication of the shaft tooth parts under various working conditions. However, when the vehicle is in a general working condition, there is too much lubricating oil in the shell of the drive axle, which causes a certain amount of oil stirring loss, thereby affecting the transmission efficiency of the drive axle.

[0005] SUMMARY

[0006] In view of this, the present application provides a drive axle, a vehicle and a control method of the drive axle to solve the problem that too much lubricating oil in the shell of the drive axle causes a certain amount of oil stirring loss, thereby affecting the transmission efficiency of the drive axle.

[0007] According to a first aspect of the present application, a drive axle is provided, which comprises a shell, a partition, a blocking piece and a driven gear. The shell encloses a containing space. The partition protrudes into the containing space from the bottom of the shell. The partition divides the containing space into a first containing cavity and a second containing cavity. The driven gear is arranged in the first containing cavity. A communication hole is formed in the partition and communicates the first containing cavity and the second containing cavity. The blocking piece is arranged on the communication hole and can open or close the communication hole.

[0008] Further, the blocking piece comprises a temperature detector and a control valve. The control valve can open or close the communication hole, and the temperature detector is located in the first containing cavity.

[0009] Further, the opening degree of the control valve can be switched between 0 and 100.

[0010] Further, the temperature detector and the control valve are integrated.

[0011] Further, the drive axle comprises a controller, which is in communication connection with the blocking member to receive the temperature signal from the temperature detector, and is capable of receiving a vehicle speed signal of a vehicle in which the drive axle is installed, and is capable of controlling the control valve to open or close.

[0012] Further, the drive axle comprises a magnetic attraction part, which is arranged inside the housing, and the partition is fixed to the bottom of the housing.

[0013] Further, the drive axle comprises a plurality of magnetic attraction parts, at least one of which is arranged in the first accommodating cavity, and at least one of which is arranged in the second accommodating cavity.

[0014] Further, the housing comprises a shell and an end cover, which are detachably connected, and the shell and the end cover enclose the accommodating space.

[0015] According to a second aspect of the present application, a vehicle is provided, which comprises the above-mentioned drive axle.

[0016] According to a third aspect of the present application, a control method of a drive axle is provided, which is used for controlling the above-mentioned drive axle, and comprises:

[0017] obtaining an operating oil temperature of the lubricating oil in the first accommodating cavity;

[0018] comparing the operating oil temperature with a preset oil temperature, and controlling the blocking member to open or close the communication hole based on a result of the first comparison.

[0019] Further, the step of controlling the blocking member to open or close the communication hole based on the result of the first comparison comprises:

[0020] when the result of the first comparison indicates that the operating oil temperature is greater than the preset oil temperature, controlling the blocking member to completely open the communication hole;

[0021] when the result of the first comparison indicates that the operating oil temperature is less than or equal to the preset oil temperature, obtaining a driving speed of a vehicle in which the drive axle is installed, comparing the driving speed with a first preset speed, and controlling the blocking member to open or close the communication hole based on a result of the second comparison.

[0022] Further, the step of controlling the blocking member to open or close the communication hole based on the result of the second comparison comprises:

[0023] when the result of the second comparison indicates that the driving speed is less than or equal to the first preset speed, controlling the blocking member to open the communication hole;

[0024] when the result of the second comparison indicates that the driving speed is greater than the first preset speed, controlling the blocking member to close the communication hole.

[0025] Further, the control method of the drive axle further comprises:

[0026] when the operating oil temperature is less than or equal to the preset oil temperature and the blocking member opens the communication hole, acquiring the driving speed of the vehicle in which the drive axle is located;

[0027] comparing the driving speed with a second preset speed, and controlling the blocking member to open or close the communication hole based on the result of the third comparison.

[0028] Further, the first preset speed is higher than the second preset speed.

[0029] Further, the step of comparing the driving speed with a second preset speed, and controlling the blocking member to open or close the communication hole based on the result of the third comparison comprises:

[0030] when the result of the third comparison indicates that the driving speed is less than or equal to the second preset speed, controlling the blocking member to open the communication hole completely;

[0031] when the result of the second comparison indicates that the driving speed is greater than the second preset speed, controlling the blocking member to open the communication hole partially.

[0032] During the driving of the vehicle with the drive axle of the present application, when the vehicle is in a severe working condition, the blocking member opens the communication hole, and the driven gear agitates the lubricating oil in the first accommodating cavity for lubrication. Since the communication hole is in the open state, the lubricating oil in the second accommodating cavity can enter the first accommodating cavity through the communication hole to supplement the lubricating oil in the first accommodating cavity, so as to ensure the oil agitation amount of the driven gear. When the vehicle is in a general working condition, the blocking member blocks the communication hole, and the driven gear agitates the lubricating oil in the first accommodating cavity for lubrication. Since the communication hole is in the closed state, the lubricating oil in the second accommodating cavity cannot enter the first accommodating cavity through the communication hole. In this way, the oil agitation amount of the driven gear when the vehicle is in the general working condition is reduced, thereby reducing the oil agitation loss and improving the transmission efficiency of the drive axle.

[0033] In order to make the above objectives, characteristics and advantages of the present application more apparent and easy to understand, a preferred embodiment is specifically described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the present application or the prior art, the accompanying drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0035] Fig. 1 shows a sectional view of a drive axle according to an embodiment of the present application;

[0036] Fig. 2 shows a sectional view of a drive axle according to an embodiment of the present application;

[0037] Fig. 3 shows a flowchart of a control method of a drive axle according to an embodiment of the present application.

[0038] Reference signs: 1 - housing; 11 - housing body; 12 - end cap; 2 - partition; 3 - driven gear; 4 - plug; 5 - screw; 6 - magnetic attraction part; 7 - first accommodating cavity; 8 - second accommodating cavity. DETAILED DESCRIPTION

[0039] The following detailed description is provided to help the reader obtain a complete understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent after an understanding of the disclosure of the present application. For example, the order of the operations described herein is merely an example, and is not limited to the order set forth herein, but, except for operations that must occur in a specific order, changes that will be apparent after an understanding of the disclosure of the present application can be made. In addition, the description of features known in the art can be omitted in order to improve clarity and conciseness.

[0040] The features described herein can be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to show some of the many ways in which the methods, devices, and / or systems described herein can be implemented after an understanding of the disclosure of the present application.

[0041] Throughout the specification, when an element (such as a layer, region or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, "on top of" another element or "covering" another element, it can be directly on, connected to, coupled to, adjacent to, on top of, or covering the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on", "directly connected to", "directly coupled to", "directly adjacent to", "directly on top of", or "directly covering" another element, there are no other elements interposed therebetween.

[0042] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.

[0043] Although terms such as "first" and "second" and "third" can be used herein to describe various components, assemblies, regions, layers or sections, these components, assemblies, regions, layers or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, assembly, region, layer or section from another component, assembly, region, layer or section. Thus, a component, assembly, region, layer or section referred to as a first component, assembly, region, layer or section in one example described herein can also be referred to as a second component, assembly, region, layer or section in another example without departing from the teachings of the examples.

[0044] For ease of description, spatial terms such as "on", "upper", "below", and "lower" can be used with respect to the orientation of one element relative to another element as illustrated in the figures. Such spatial terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, a component described as on "top" or the "upper" relative to another component would then be oriented on the "bottom" or "lower" relative to the other component. Accordingly, the term "on" encompasses both a position directly above and below another component as well as both before or after another component. The device can be oriented in other ways (e.g., rotated 90 degrees, or at other orientations) and an appropriate modification to the spatial terms would be made to them.

[0045] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including" and "has" are inclusive and permit the presence of one or more other features, numbers, operations, members, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, members, elements and / or combinations thereof.

[0046] Due to manufacturing techniques and / or tolerances, variations in the shapes of the components shown in the figures can occur. Therefore, the examples described herein are not intended to be limited to the particular shapes of the components shown in the figures, but include deviations in shapes that would be apparent to one of ordinary skill in the art upon viewing the disclosure herein.

[0047] Features of the examples described herein can be combined in a variety of ways as would be apparent to a person of ordinary skill in the art upon viewing the disclosure herein. Furthermore, although exemplary examples are provided in this description, others will occur to those of ordinary skill in the art and are within the scope of the disclosure. Therefore, claims that follow are hereby intended to cover any such modifications and examples within the scope of this disclosure.

[0048] According to a first aspect of the present application, a drive axle is provided, as shown in FIG. 1 and FIG. 2. The drive axle comprises a housing 1, a partition 2, a blocking member 4 and a driven gear 3. The housing 1 encloses a receiving space. The partition 2 protrudes into the receiving space from a bottom of the housing 1. The partition 2 divides the receiving space into a first receiving cavity 7 and a second receiving cavity 8. The driven gear 3 is arranged in the first receiving cavity 7. A communication hole is formed in the partition 2. The blocking member 4 is arranged on the communication hole. The blocking member 4 can open or close the communication hole.

[0049] During the driving of a vehicle with the drive axle of the present application, when the vehicle is in a severe working condition (the special working condition can refer to a working condition in which the lubrication demand is high when the vehicle is just started, the lubricating oil temperature is high, etc.), the blocking member 4 opens the communication hole, and the driven gear 3 stirs the lubricating oil in the first receiving cavity 7 to perform lubrication. Since the communication hole is in an open state, the lubricating oil in the second receiving cavity 8 can enter the first receiving cavity 7 through the communication hole to supplement the lubricating oil in the first receiving cavity 7, so as to ensure the oil stirring amount of the driven gear 3. When the vehicle is in a general working condition, the blocking member 4 closes the communication hole, and the driven gear 3 stirs the lubricating oil in the first receiving cavity 7 to perform lubrication. Since the communication hole is in a closed state, the lubricating oil in the second receiving cavity 8 cannot enter the first receiving cavity 7 through the communication hole. In this way, the oil stirring amount of the driven gear 3 when the vehicle is in a general working condition is reduced, thereby reducing the oil stirring loss and improving the transmission efficiency of the drive axle.

[0050] In the embodiment of the present application, as shown in FIG. 1 and FIG. 2, the outer shell 1 comprises a shell 11 and an end cover 12, the shell 11 and the end cover 12 can be detachably connected by bolts, the shell 11 and the end cover 12 surround a containing space, the driven gear 3 and the driving gear meshing with the driven gear 3 are located in the containing space surrounded by the shell 11 and the end cover 12, and the driving gear and the driven gear 3 can be bevel gears.

[0051] Optionally, the partition 2 can be in the shape of an arc plate, both ends of the partition 2 in the radial direction of the driven gear 3 are connected to the inner side wall of the shell 11, so that the partition 2 separates the inner part of the outer shell 1 into the first containing cavity 7 and the second containing cavity 8, and the partition 2 can be integrally formed with the shell 11.

[0052] Further, as shown in FIG. 2, the drive axle comprises a magnetic attraction part 6, the magnetic attraction part 6 is arranged inside the outer shell 1, the inner side wall of the outer shell 1 has a placing groove, the magnetic attraction part 6 can be embedded in the placing groove, and the magnetic attraction part 6 is fixed at the bottom of the outer shell 1. In this way, the magnetic attraction part 6 can adsorb iron filings in the lubricating oil, so as to ensure the cleanliness of the lubricating oil and improve the service life of the drive axle. It can be understood that the bottom of the outer shell can be understood as a position that can be covered by the liquid level of the lubricating oil, so that the magnetic attraction part 6 can adsorb iron filings in the lubricating oil.

[0053] Optionally, the drive axle comprises a plurality of magnetic attraction parts 6, at least one magnetic attraction part 6 is arranged in the first containing cavity 7, and at least one magnetic attraction part 6 is arranged in the second containing cavity 8. In this way, the iron filings in the lubricating oil in the first containing cavity 7 and the second containing cavity 8 can be adsorbed by the magnetic attraction part 6, so as to further improve the cleanliness of the lubricating oil.

[0054] Preferably, the magnetic attraction part 6 is a magnet, and only one magnetic attraction part 6 is arranged in each of the first containing cavity 7 and the second containing cavity 8.

[0055] In the embodiment of the present application, the plugging part 4 comprises a temperature detector and a control valve, the temperature detector is located in the first containing cavity 7, so as to detect the temperature of the lubricating oil agitated by the driven gear 3 in the first containing cavity 7. The control valve is fixed on the inner side wall of the outer shell 1, and part of the control valve is located in the communication hole. In this way, the opening or closure of the communication hole can be realized by the opening or closure of the control valve.

[0056] Optionally, the temperature detector and the control valve are integrated, at this time, the plugging part 4 can be a solenoid valve with a temperature sensor, the solenoid valve with a temperature sensor is connected with the inner side wall of the outer shell 1 and the partition 2 by screws 5, so that the solenoid valve with a temperature sensor is fixed on the inner side wall of the outer shell 1 and can plug or open the communication hole.

[0057] In addition, the form of the blocking member 4 is not limited to this, for example, the temperature detector and the control valve can also be two components respectively, at this time, the temperature detector and the control valve can be fixed at different positions on the inner wall of the shell 1, and the temperature detector is located in the first accommodating cavity 7, the temperature detector can be a temperature sensor, and the control valve can be a solenoid valve, the temperature sensor can be fixed on the inner side wall of the shell 1 by bolts, and the control valve can be fixed on the partition 2 by bolts, so that the control valve can block or open the communication hole.

[0058] In the embodiment of the present application, the opening degree of the control valve can be switched between 0-100, that is, the control valve can have three states, when the opening degree of the control valve is 0, the control valve is in a closed state; when the opening degree of the control valve is 100, the control valve is in a fully open state; when the opening degree of the control valve is between 0 and 100, the control valve is partially open, at this time, the flow of lubricating oil passing through the control valve is greater than the flow of lubricating oil passing through the control valve when the opening degree of the control valve is 0. When the control valve is open, the opening degree of the control valve can be selected according to the lubrication demand of the drive axle, the lubrication demand is met while the oil stirring loss is reduced as much as possible, thereby improving the transmission efficiency of the drive axle.

[0059] Further, the drive axle comprises a controller, the controller is in communication connection with the blocking member 4 to receive the temperature signal from the temperature detector, and the controller can also receive the vehicle speed signal of the vehicle where the drive axle is located. In this way, the controller can receive the driving speed signal of the vehicle and the operating temperature signal of the lubricating oil at the same time, thereby adjusting the opening degree of the control valve based on the driving speed of the vehicle and the operating temperature of the lubricating oil, the priority of the operating temperature signal of the lubricating oil is higher than the driving speed signal of the vehicle, when the operating temperature of the lubricating oil is higher than the preset temperature, the control valve needs to be fully opened no matter the vehicle is at any driving speed, at this time, the opening degree of the control valve is 100.

[0060] When the vehicle is just started, the running speed of the vehicle is low, and the running oil temperature of the lubricating oil is low. In order to ensure sufficient lubrication of the bearing and the gear, the control valve is fully opened, and the opening degree of the control valve is 100. At this time, the liquid levels of the lubricating oil in the first containing cavity 7 and the second containing cavity 8 are the same, the liquid level of the lubricating oil where the driven gear 3 is located is higher, and the driven gear 3 can maximize the stirring of the gear oil to lubricate everywhere to meet the lubrication requirement. After the vehicle is started, the running speed of the vehicle is increased, and when the running speed of the vehicle exceeds the second preset speed, in order to reduce the stirring loss, the opening degree of the control valve can be reduced. At this time, the opening degree of the control valve is between 0 and 100, the supplement speed of the lubricating oil in the second containing cavity 8 to the lubricating oil in the first containing cavity 7 is small, and the liquid level of the lubricating oil in the second containing cavity 8 is reduced. With the further increase of the running speed of the vehicle, when the running speed of the vehicle exceeds the first preset speed, in order to further reduce the stirring loss, the control valve is closed. At this time, the stirring amount of the driven gear 3 is the smallest, the stirring loss is the smallest, and the transmission efficiency of the drive axle reaches the highest.

[0061] In the process of the vehicle running at any running speed, the running temperature of the lubricating oil needs to be monitored in real time. When the running temperature of the lubricating oil exceeds the preset temperature, the control valve is fully opened, so that the lubricating oil in the second containing cavity 8 can be supplemented to the first containing cavity 7 in real time, to ensure the lubrication and cooling function in the drive axle, and to ensure the service life and reliability of the drive axle.

[0062] Through the drive axle provided by the application, the lubrication and cooling requirements of the drive axle can be ensured, and the stirring loss is reduced as much as possible, and the transmission efficiency of the drive axle is improved.

[0063] According to the second aspect of the application, a vehicle is provided, and the vehicle comprises the drive axle described above. The vehicle provided by the application reduces the stirring loss and improves the transmission efficiency.

[0064] According to the third aspect of the application, a control method of a drive axle is provided, and the control method of the drive axle is used to control the drive axle described above. As shown in FIG. 3, the control method of the drive axle comprises the following steps.

[0065] Obtaining the running oil temperature of the lubricating oil in the first containing cavity 7;

[0066] Comparing the running oil temperature with the preset oil temperature, and controlling the opening or closing of the communication hole based on the comparison result.

[0067] The oil temperature of the lubricating oil in the drive axle housing 1 is judged to control the opening degree of the control valve in the plugging part 4, so that the opening or closing of the communication hole is realized. In this way, the intelligent control of the liquid level of the lubricating oil in the first containing cavity 7 where the driven gear 3 is located can be realized. While ensuring the service life and reliability of the drive axle, the stirring loss is reduced to a certain extent, and the transmission efficiency is improved.

[0068] Optionally, the preset oil temperature can be 90℃.

[0069] Further, the step of controlling the blocking member 4 to open or close the communication hole based on the result of the first comparison comprises:

[0070] When the result of the first comparison indicates that the operating oil temperature is greater than the preset oil temperature, the blocking member 4 is controlled to completely open the communication hole;

[0071] When the result of the first comparison indicates that the operating oil temperature is less than or equal to the preset oil temperature, the driving speed of the vehicle where the driving axle is located is obtained, the driving speed is secondly compared with a first preset speed, and the blocking member 4 is controlled to open or close the communication hole based on the result of the second comparison.

[0072] In other words, the blocking member 4 can be controlled according to the driving speed of the vehicle and the operating temperature of the lubricating oil, wherein the operating temperature of the lubricating oil has a higher priority than the driving speed of the vehicle, and when the operating temperature of the lubricating oil is higher than the preset temperature, the communication hole needs to be completely opened regardless of the driving speed of the vehicle, and the opening degree of the control valve is 100 at this time.

[0073] Further, the step of controlling the blocking member 4 to open or close the communication hole based on the result of the second comparison comprises:

[0074] When the result of the second comparison indicates that the driving speed is less than or equal to the first preset speed, the blocking member 4 is controlled to open the communication hole;

[0075] When the result of the second comparison indicates that the driving speed is greater than the first preset speed, the blocking member 4 is controlled to close the communication hole.

[0076] In this way, when the driving speed of the vehicle exceeds the first preset speed, the communication hole is closed, and the opening degree of the control valve is 0 at this time, and the oil stirring amount of the driven gear 3 is the smallest, the oil stirring loss is the smallest, and the transmission efficiency of the driving axle is the highest.

[0077] Further, the control method of the driving axle further comprises:

[0078] When the operating oil temperature is less than or equal to the preset oil temperature and the blocking member 4 opens the communication hole, the driving speed of the vehicle where the driving axle is located is obtained;

[0079] The driving speed is thirdly compared with a second preset speed, and the blocking member 4 is controlled to completely open or partially open the communication hole based on the result of the third comparison.

[0080] In this way, when the operating temperature of the lubricating oil does not exceed the preset temperature, the communication hole can be partially opened according to the driving speed to reduce the oil stirring loss at some driving speeds.

[0081] In the above steps, the first preset speed is higher than the second preset speed.

[0082] The step of comparing the driving speed with the second preset speed and controlling the opening or closing of the communication hole by the blocking member 4 based on the result of the third comparison comprises:

[0083] When the result of the third comparison indicates that the driving speed is less than or equal to the second preset speed, the blocking member 4 is controlled to fully open the communication hole;

[0084] When the result of the second comparison indicates that the driving speed is greater than the second preset speed, the blocking member 4 is controlled to partially open the communication hole.

[0085] Thus, when the driving speed of the vehicle exceeds the second preset speed, the blocking member 4 partially opens the communication hole, and the opening degree of the control valve is between 0 and 100 at this time, so as to reduce the oil stirring loss and improve the transmission efficiency.

[0086] By the control method of the drive axle in the present application, the running oil temperature of the lubricating oil in the housing 1 and the driving speed of the vehicle are judged to control the state of the communication hole, so as to reduce the oil stirring loss and improve the transmission efficiency.

[0087] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. Industrial applicability

[0088] In the process of driving the vehicle with the drive axle of the present application, when the vehicle is in a severe working condition, the blocking member opens the communication hole, and the driven gear stirs the lubricating oil in the first containing cavity for lubrication. Because the communication hole is in the open state, the lubricating oil in the second containing cavity can enter the first containing cavity through the communication hole to supplement the lubricating oil in the first containing cavity to ensure the oil stirring amount of the driven gear. When the vehicle is in a general working condition, the blocking member blocks the communication hole, and the driven gear stirs the lubricating oil in the first containing cavity for lubrication. Because the communication hole is in the closed state, the lubricating oil in the second containing cavity will not enter the first containing cavity through the communication hole. Thus, the oil stirring amount of the driven gear when the vehicle is in a general working condition is reduced, thereby reducing the oil stirring loss and improving the transmission efficiency of the drive axle.

Claims

1. A drive axle, characterized in that: The drive axle includes a shell, a partition, a sealing member and a driven gear. The shell encloses a accommodating space. The partition protrudes from the bottom of the shell into the accommodating space. The partition divides the accommodating space into a first accommodating chamber and a second accommodating chamber. The driven gear is arranged in the first accommodating chamber. The partition is provided with a connecting hole connecting the first accommodating chamber and the second accommodating chamber. The sealing member is arranged on the connecting hole. The sealing member can open or close the connecting hole.

2. The drive axle according to claim 1, characterized in that: The blocking member includes a temperature detector and a control valve. The control valve can open or close the communicating hole. The temperature detector is located in the first accommodating cavity.

3. The drive axle according to claim 2, characterized in that: The opening degree of the control valve can be switched between 0-100.

4. The drive axle according to claim 2, characterized in that: The temperature detector and the control valve are integrated into one body.

5. The drive axle according to any one of claims 2 to 4, characterized in that: The drive axle includes a controller, which is in communication with the sealing member to receive a temperature signal from the temperature detector. The controller can also receive a speed signal of the vehicle where the drive axle is located, and can control the control valve to open or close.

6. The drive axle according to claim 1, characterized in that: The drive bridge includes a magnetic attraction portion, which is arranged inside the shell and fixed to the bottom of the shell.

7. The drive axle according to claim 6, characterized in that: The drive bridge includes a plurality of magnetic attraction parts, at least one of the magnetic attraction parts is provided in the first accommodating cavity, and at least one of the magnetic attraction parts is provided in the second accommodating cavity.

8. The drive axle according to claim 1, characterized in that: The housing includes a shell and an end cover, the shell and the end cover are detachably connected, and the shell and the end cover enclose the accommodating space.

9. A vehicle, characterized in that: The vehicle comprises the drive axle according to any one of claims 1-8.

10. A control method for a drive axle, characterized in that: The control method of the drive axle is used to control the drive axle according to any one of claims 1 to 9, and the control method of the drive axle includes: Obtaining the operating oil temperature of the lubricating oil in the first accommodating chamber; A first comparison is performed between the operating oil temperature and a preset oil temperature, and based on a result of the first comparison, the blocking member is controlled to open or close the communicating hole.

11. The control method of the drive axle according to claim 10, characterized in that: The step of controlling the blocking member to open or close the communicating hole based on the result of the first comparison includes: When the result of the first comparison indicates that the operating oil temperature is greater than the preset oil temperature, controlling the blocking member to fully open the communicating hole; When the result of the first comparison indicates that the operating oil temperature is less than or equal to the preset oil temperature, the driving speed of the vehicle on which the drive axle is located is obtained, the driving speed is compared with the first preset speed for a second time, and based on the result of the second comparison, the blocking member is controlled to open or close the connecting hole.

12. The control method for a drive axle according to claim 11, characterized in that: The step of controlling the blocking member to open or close the communicating hole based on the result of the second comparison includes: When the result of the second comparison indicates that the driving speed is less than or equal to a first preset speed, controlling the blocking member to open the communicating hole; When the result of the second comparison indicates that the driving speed is greater than a first preset speed, the blocking member is controlled to close the communicating hole.

13. The control method of the drive axle according to claim 11, characterized in that: The control method of the drive axle further includes: When the operating oil temperature is less than or equal to the preset oil temperature and the blocking member opens the communicating hole, obtaining a running speed of the vehicle on which the drive axle is located; A third comparison is performed between the driving speed and a second preset speed, and based on a result of the third comparison, the blocking member is controlled to open or close the communicating hole.

14. The control method of the drive axle according to claim 13, characterized in that: The first preset speed is higher than the second preset speed.

15. The control method of the drive axle according to claim 13, characterized in that: The step of performing a third comparison between the driving speed and the second preset speed, and controlling the blocking member to open or close the communicating hole based on a result of the third comparison includes: When the result of the third comparison indicates that the driving speed is less than or equal to a second preset speed, controlling the blocking member to open all the communicating holes; When the result of the second comparison indicates that the driving speed is greater than a second preset speed, the blocking member is controlled to partially open the communicating hole.

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