Electric drive axle speed reducer shell
By integrating coiled cooling pipes, heat sinks and air-concentration components on the electric drive axle reducer housing, the problem of low heat dissipation efficiency of the electric drive axle reducer is solved, cost and space occupation are reduced, and the stability and reliability of the system are improved.
Patent Information
- Application Number
- CN202422089796.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The heat dissipation structure of the existing electric drive axle reducer increases cost and space occupation, and the demand for lubricating oil increases, affecting the layout of the entire vehicle, and the existing heat dissipation method is inefficient.
The cooling structure consisting of coiled drainage cooling pipe, set coiled drainage pipe, coolant, heat sink, horn-type accelerator plate and air-concentration components is adopted to efficiently dissipate heat by using the natural air flow of the vehicle to increase the air contact area and flow path, and avoid leakage.
It improves heat dissipation efficiency, reduces lubricant demand, reduces costs, saves cabin space, and enhances the stability and reliability of the system.
Smart Images
Figure CN223227816U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reducer housings, in particular to an electric drive axle reducer housing. Background Art
[0002] The electric drive axle consists of three core components: the controller, the motor, and the reducer. The controller's primary heat-generating element is the IGBT, which is cooled by water channel cooling at its base. The motor's primary heat-generating elements include the stator and rotor assemblies. The stator assembly also uses water channel cooling for heat dissipation, while the rotor assembly has no dedicated heat dissipation design. The reducer's primary heat-generating element is the shaft assembly, which is also subject to heat radiation from the motor's stator and rotor. Heat dissipation relies primarily on lubricating oil cooling and natural heat dissipation from the housing.
[0003] As the industry continues to evolve, demand for electric drive axles is increasingly moving toward higher power and higher torque. However, achieving these high power and torque requirements also means increased heat generation within the various components of the electric drive axle. This increased heat generation can lead to higher temperatures within the components, potentially causing premature component failure or reduced functionality.
[0004] To address heat dissipation issues in electric axle reducers, major manufacturers currently use electronic or mechanical oil pumps in conjunction with heat exchangers to remove heat from the reducer. The heat exchanger consists of two parts: a water channel and an oil channel. The oil pump pumps the reducer's lubricating oil into the heat exchanger's oil channel. The coolant flowing in the water channel removes heat from the lubricating oil, thereby reducing the oil temperature.
[0005] However, there are three main problems with this heat dissipation structure of an electronic oil pump or a mechanical oil pump combined with a heat exchanger: first, the addition of an electronic oil pump or a mechanical oil pump and a heat exchanger leads to a significant increase in cost; second, since a portion of the oil in the heat exchanger and the oil pump cannot participate in the lubrication of the reducer, the reducer needs to add more lubricating oil, which not only increases the cost of the lubricating oil, but also increases the cost of oil change services; third, the electronic oil pump and the heat exchanger need to be installed outside the reducer, while the mechanical oil pump is located inside the reducer, which increases the space occupied by the reducer and requires more cabin space, which is not conducive to the mounting layout of the entire vehicle. In view of this, in-depth research was conducted on the above-mentioned problems, and this case came into being. Utility Model Content
[0006] In view of the deficiencies of the existing technology, the present invention provides an electric drive axle reducer housing, which solves some of the existing background technology problems.
[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an electric drive axle reducer housing, comprising: an axle housing, a reducer housing and a cooling structure, wherein the axle housing is mounted on the reducer housing, and the cooling structure is mounted on the reducer housing;
[0008] The cooling structure includes: a coiled drainage cooling pipe, a sleeved coiled drainage pipe, a coolant, a plurality of heat sinks, an air intake pipe, an exhaust pipe, a pair of trumpet-shaped sleeve blocks, a plurality of trumpet-shaped acceleration plates, and an air gathering component;
[0009] The coiled drainage cooling pipe is inserted into the inner side of the reducer housing, the sleeved coiled drainage pipe is sleeved into the inner side of the coiled drainage cooling pipe, the coolant is installed between the coiled drainage cooling pipe and the sleeved coiled drainage pipe, a number of heat sinks are respectively inserted into the coiled drainage cooling pipe and the coiled drainage pipe, the intake pipe and the exhaust pipe are inserted into the reducer housing, and the intake pipe and the exhaust pipe are connected to the coiled drainage cooling pipe, a pair of trumpet-shaped sleeve blocks are respectively installed on the intake pipe and the exhaust pipe, a number of trumpet-shaped acceleration plates are evenly installed on the inner side of the coiled drainage cooling pipe, and the wind gathering component is installed on the reducer housing and the axle housing.
[0010] Preferably, the wind gathering assembly comprises: a pair of trumpet-shaped circular blocks, a pair of trumpet-shaped rubber rings, a filter screen and a collection and diversion pipe;
[0011] A pair of the trumpet-shaped round blocks are evenly installed on the axle housing, a pair of the trumpet-shaped rubber rings are respectively installed on the inner sides of a pair of the trumpet-shaped round blocks, the collecting diversion pipe is connected to the pair of the trumpet-shaped round blocks, and the collecting diversion pipe is connected to the intake pipe, and the filter is installed on the collecting diversion pipe.
[0012] Preferably, a spider web bracket is provided on the inner side of the air inlet pipe, and the spider web bracket is sleeved on the collecting and diverting pipe.
[0013] Preferably, a plurality of replaceable U-shaped filter blocks are provided on the spider web support.
[0014] Preferably, a temperature sensor is provided on the reducer housing.
[0015] Preferably, a pair of the trumpet-shaped rubber rings are provided with a plurality of arc magnets, and a pair of the trumpet-shaped circular blocks are provided with circular electromagnets.
[0016] The utility model provides an electric drive axle reducer housing. It has the following beneficial effects: The electric drive axle reducer housing directs airflow to the intake duct through an air gathering component, utilizing the natural air flow during vehicle travel and the vehicle's speed to accelerate air flow, effectively increasing the rate at which air flows over objects per unit time, thereby significantly enhancing the cooling effect. Heat sinks are added to the surface of objects to be cooled, increasing the contact area with air and further improving heat dissipation efficiency. At the same time, the design of the coiled drainage cooling tube also increases the flow contact area, which helps to remove heat faster. This design not only increases the cooling area, but also optimizes the airflow path through coiling, making the cooling more uniform and efficient. The trumpet-shaped accelerator is used to accelerate the gas flow, while the trumpet-shaped round block cleverly guides the air generated during the movement into the collection and diversion pipe. These designs reflect the structural innovation and practicality. Through the coordination of the coiled drainage cooling tube, the set coiled drainage tube and the coolant, the effect of sealing the coolant is achieved, avoiding the risk of leakage and ensuring the stable operation of the system. The system not only has efficient heat dissipation function, but also filters and purifies the incoming gas through components such as the filter screen, thereby improving the overall performance of the system. The trumpet-shaped rubber ring buffers and filters the trumpet-shaped round block, reducing the impact of impurities in the airflow on the system and improving the reliability and service life of the system. The intake and exhaust pipes are limited by a pair of trumpet-shaped set blocks to ensure the stability and accuracy of each component of the system and prevent loosening or damage due to vibration and other reasons. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a side sectional schematic diagram of an electric drive axle reducer housing described in the utility model.
[0018] Figure 2 This is a schematic front sectional view of an electric drive axle reducer housing described in the present utility model.
[0019] Figure 3 for Figure 1 A partial enlarged view of "A".
[0020] In the figure: 1. Axle housing; 2. Reducer housing; 3. Coiled drainage cooling pipe; 4. Set coiled drainage pipe; 5. Coolant; 6. Heat sink; 7. Intake pipe; 8. Exhaust pipe; 9. Trumpet-shaped set block; 10. Trumpet-shaped acceleration plate; 11. Trumpet-shaped circular block; 12. Trumpet-shaped rubber ring; 13. Filter; 14. Collection and diversion pipe. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] Through the use of wires by those skilled in the art, all electrical components in this case are connected to their corresponding power supplies, and appropriate controllers and encoders should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components are electrically connected in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.
[0023] Example
[0024] Figure 1-3 As shown, the axle housing 1 is mounted on the reducer housing 2, and the cooling structure is mounted on the reducer housing 2;
[0025] Specifically, the cooling structure includes: a coiled drainage cooling pipe 3, a set coiled drainage pipe 4, a coolant 5, a plurality of heat sinks 6, an air intake pipe 7, an exhaust pipe 8, a pair of trumpet-shaped set blocks 9, a plurality of trumpet-shaped acceleration plates 10 and an air gathering component;
[0026] Specifically, the coiled drainage cooling pipe 3 is inserted into the inner side of the reducer housing 2, the sleeved coiled drainage pipe 4 is sleeved into the inner side of the coiled drainage cooling pipe 3, the coolant 5 is installed between the coiled drainage cooling pipe 3 and the sleeved coiled drainage pipe 4, a plurality of heat sinks 6 are respectively inserted into the coiled drainage cooling pipe and the coiled drainage pipe, the intake pipe 7 and the exhaust pipe 8 are inserted into the reducer housing 2, and the intake pipe 7 and the exhaust pipe 8 are connected to the coiled drainage cooling pipe 3, a pair of trumpet-shaped sleeve blocks 9 are respectively installed on the intake pipe 7 and the exhaust pipe 8, a plurality of trumpet-shaped acceleration plates 10 are evenly installed on the inner side of the coiled drainage cooling pipe 3, and the wind gathering component is installed on the reducer housing 2 and the axle housing 1;
[0027] It should be noted that, in the above, the air flow during operation is guided to the inner side of the air intake pipe 7 by the wind gathering component, and the gas is guided to the inner side of the coiled drainage cooling pipe 3 by the air intake pipe 7. In the absence of external power, the heat is taken away by relying on the natural convection of the air. At the same time, the faster the speed of the car, the faster the air flow speed, and the rate at which the air flows through the object per unit time is increased, thereby enhancing the cooling effect. At the same time, the flow contact area of the coiled drainage cooling pipe 3 is increased, and the heat sink 6 is added to the surface of the object to be cooled, thereby increasing the contact area with the air and improving the heat dissipation efficiency. The coiled drainage cooling pipe 3 is quickly cooled, and at the same time, the low temperature The coiled drainage cooling tube 3 cools the coolant 5, and at the same time, the cooled coolant 5 absorbs the heat on the jacketed coiled drainage tube 4, and at the same time, the reducer housing 2 is cooled by the jacketed coiled drainage tube 4, and at the same time, the cooling contact area is increased by a number of heat sinks 6. At the same time, the coordination of the coiled drainage cooling tube 3, the jacketed coiled drainage tube 4 and the coolant 5 can achieve the effect of sealing the coolant 5 and avoiding leakage. At the same time, the intake pipe 7 and the exhaust pipe 8 are limited by a pair of trumpet-shaped jacket blocks 9, and the flow of gas is accelerated by a number of trumpet-shaped acceleration plates 10 on the inside of the coiled drainage cooling tube 3.
[0028] like Figure 1-3 As shown, the wind gathering assembly includes: a pair of trumpet-shaped circular blocks 11, a pair of trumpet-shaped rubber rings 12, a filter 13 and a collection and diversion pipe 14;
[0029] Specifically, a pair of the trumpet-shaped round blocks 11 are evenly installed on the axle housing 1, a pair of the trumpet-shaped rubber rings 12 are respectively installed on the inner sides of the pair of trumpet-shaped round blocks 11, the collecting and diverting pipes 14 are connected to the pair of trumpet-shaped round blocks 11, and the collecting and diverting pipes 14 are connected to the intake pipe 7, and the filter 13 is installed on the collecting and diverting pipes 14;
[0030] It should be noted that, in the above description, the air generated during the movement is guided to the inner side of the collecting diversion pipe 14 by a pair of trumpet-shaped round-shaped blocks 11, and at the same time, the trumpet-shaped round-shaped blocks 11 are buffered and filtered by a pair of trumpet-shaped rubber rings 12, and at the same time, filtered by the filter mesh 13 on the inner side of the collecting diversion pipe 14, and at the same time, the gas is guided to the inner side of the intake pipe 7 through the collecting diversion pipe 14.
[0031] As a preferred solution, further, a spider web bracket is provided on the inner side of the air inlet pipe 7 , and the spider web bracket is sleeved on the collecting and diverting pipe 14 .
[0032] As a preferred solution, further, the spider web support is provided with a plurality of replaceable U-shaped filter blocks.
[0033] As a preferred solution, further, a temperature sensor is provided on the reducer housing 2 .
[0034] As a preferred solution, further, a pair of the trumpet-shaped rubber rings 12 are provided with a plurality of arc magnets, and a pair of the trumpet-shaped circular blocks 11 are provided with circular electromagnets.
[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.
[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An electric drive axle reducer housing, comprising: An axle housing, a reducer housing, and a cooling structure, wherein the axle housing is mounted on the reducer housing, and the cooling structure is mounted on the reducer housing; The cooling structure includes: a coiled drainage cooling pipe, a sleeved coiled drainage pipe, a coolant, a plurality of heat sinks, an air intake pipe, an exhaust pipe, a pair of trumpet-shaped sleeve blocks, a plurality of trumpet-shaped acceleration plates, and an air gathering component; The coiled drainage cooling pipe is inserted into the inner side of the reducer housing, the sleeved coiled drainage pipe is sleeved into the inner side of the coiled drainage cooling pipe, the coolant is installed between the coiled drainage cooling pipe and the sleeved coiled drainage pipe, a number of heat sinks are respectively inserted into the coiled drainage cooling pipe and the coiled drainage pipe, the intake pipe and the exhaust pipe are inserted into the reducer housing, and the intake pipe and the exhaust pipe are connected to the coiled drainage cooling pipe, a pair of trumpet-shaped sleeve blocks are respectively installed on the intake pipe and the exhaust pipe, a number of trumpet-shaped acceleration plates are evenly installed on the inner side of the coiled drainage cooling pipe, and the wind gathering component is installed on the reducer housing and the axle housing.
2. The electric drive axle reducer housing according to claim 1, characterized in that: The wind gathering assembly includes: a pair of trumpet-shaped circular blocks, a pair of trumpet-shaped rubber rings, a filter screen and a collection and diversion pipe; A pair of the trumpet-shaped round blocks are evenly installed on the axle housing, a pair of the trumpet-shaped rubber rings are respectively installed on the inner sides of a pair of the trumpet-shaped round blocks, the collecting diversion pipe is connected to the pair of the trumpet-shaped round blocks, and the collecting diversion pipe is connected to the intake pipe, and the filter is installed on the collecting diversion pipe.
3. The electric drive axle reducer housing according to claim 2, characterized in that: A spider web bracket is provided on the inner side of the air inlet pipe, and the spider web bracket is sleeved on the collecting and diverting pipe.
4. The electric drive axle reducer housing according to claim 3, characterized in that: A plurality of replaceable U-shaped filter blocks are arranged on the spider web support.
5. The electric drive axle reducer housing according to claim 4, characterized in that: A temperature sensor is provided on the reducer housing.
6. The electric drive axle reducer housing according to claim 5, characterized in that: A pair of the trumpet-shaped rubber rings are provided with a plurality of arc magnets, and a pair of the trumpet-shaped circular blocks are provided with circular electromagnets.