Electrically-driven axle with modular selective installation function

Abstract

The utility model provides an electric drive axle with a modularized selective installation function, which comprises two main speed reducer modules arranged on the front side and the rear side of an axle housing assembly, and the two main speed reducer modules comprise at least one single-gear main speed reducer module and / or at least one two-gear integrated main speed reducer module. The two main speed reducer modules are respectively matched with a driving motor, the controller module is used for controlling the main speed reducer modules and the driving motor, at least one of the two main speed reducer modules is in a working state, the driving motor drives a main speed reducer in the main speed reducer module, the main speed reducer transmits power to a differential mechanism, and the differential mechanism transmits the power to the main speed reducer module. The differential mechanism distributes power to the left half shaft and the right half shaft according to power requirements. The defects that in the prior art, the power performance of an electrically-driven axle is seriously limited, the working condition adaptability is poor, and meanwhile the phenomenon that a small horse pulls a large vehicle is extremely likely to happen due to the too small driving motor and a speed control system can be overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy commercial vehicles, and in particular to an electric drive axle with a modular optional function. Background Art

[0002] With the increasing penetration of new energy sources such as pure electric, hybrid, and hydrogen fuel cells in the commercial vehicle market, the scope and field of use of new energy commercial vehicles are constantly expanding, and the complexity of the market and operating conditions is constantly increasing. As a result, the requirements for the universality of operating conditions of new energy powertrains are further improved. They must not only meet the energy consumption economy of high-speed and standard-load conditions, but also meet the high power requirements of vehicles under heavy load, climbing, starting and other conditions.

[0003] The integrated electric drive axle fully solves the problems of large power loss, high energy consumption and short cruising range of traditional new energy commercial vehicle powertrain by highly integrating the power system, transmission system and axle. However, due to the limitations of the vehicle chassis layout space structure, the size and structure requirements of the drive motor and the transmission system are high, which leads to severe restrictions on the power performance of the electric drive axle and poor adaptability to working conditions. At the same time, too small a drive motor and transmission system can easily cause the phenomenon of "a small horse pulling a big cart", resulting in frequent vehicle failures, which seriously limits the promotion and application of electric drive axles in the new energy commercial vehicle market. Utility Model Content

[0004] Therefore, the utility model provides an electric drive axle with modular optional functions, which can overcome the limitations of the prior art caused by the spatial structure of the vehicle chassis layout, and has high requirements on the size structure of the drive motor and the speed change system, which leads to serious limitations on the power performance of the electric drive axle and poor adaptability to working conditions. At the same time, too small a drive motor and speed change system can easily cause the phenomenon of "a small horse pulling a big cart", resulting in frequent vehicle failures, which seriously limits the defects of the promotion and application of electric drive axles in the new energy commercial vehicle market.

[0005] In order to solve the above problems, the utility model provides an electric drive axle with modular optional function, including two main reducer modules installed on the front and rear sides of the bridge housing assembly, the two main reducer modules include at least one single-speed main reducer module, and / or at least one two-speed integrated main reducer module, the two main reducer modules are respectively adapted to drive motors, at least one of the two main reducer modules is in a working state, a controller module is used to control the main reducer module and the drive motor, the drive motor drives the main reducer in the main reducer module, the main reducer transmits power to the differential, and the differential distributes the power to the left half shaft and the right half shaft according to power demand.

[0006] In some embodiments, drum brake wheel edge modules or disc brake wheel edge modules are provided at both ends of the bridge housing assembly.

[0007] In some embodiments, the power matching type of the two main reducer modules includes: two single-speed main reducer modules, or two two-speed integrated main reducer modules, or one single-speed main reducer module and one two-speed integrated main reducer module.

[0008] In some embodiments, when the power matching type is two of the two-speed integrated final reducer modules, or one of the single-speed final reducer modules and one of the two-speed integrated final reducer modules, the two-speed integrated final reducer module includes a two-speed reducer, the differential, and a power shift mechanism.

[0009] In some embodiments, when the power matching type is two single-speed final reducer modules, the single-speed final reducer module includes a single-speed reducer and the differential.

[0010] The utility model provides an electric drive axle with modular optional function, which designs the main reducer, electronic control and wheel side assembly of the drive axle as modular units. Through standardized interface design, a variety of electric drive axles that meet the needs of multiple working conditions are matched based on demand, which effectively improves the working condition adaptability of the electric drive axle, has stronger configurability and a wider range of applications. In addition, the modular configuration is adopted, and when a fault occurs, it can be quickly replaced and repaired according to the faulty module, which effectively improves the maintenance convenience and maintenance timeliness of the product, and the applicable cost is fully reduced. At the same time, a single drive module, a dual drive module and a multi-speed drive module can be selected according to the working conditions, which effectively improves the power performance of the electric drive axle, and the working condition adaptability of the product is fully improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of one embodiment of an electric drive axle with modular optional function according to an embodiment of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of a two-speed integrated final reducer module of an electric drive axle with modular optional function according to an embodiment of the utility model;

[0013] Figure 3 This is a schematic structural diagram of a single-speed integrated final reducer module of an electric drive axle with a modular optional function according to an embodiment of the utility model;

[0014] Figure 4 This is a schematic diagram of the structure of a controller module of an electric drive axle with modular optional function according to an embodiment of the utility model;

[0015] Figure 5 This is a schematic diagram of the structure of a drum brake wheel side module of an electric drive axle with modular optional function according to an embodiment of the utility model;

[0016] Figure 6 This is a schematic structural diagram of a disc brake wheel side module of an electric drive axle with modular optional function according to an embodiment of the utility model;

[0017] Figure 7 It is a structural schematic diagram of a second embodiment of the electric drive axle with modular optional function according to the embodiment of the utility model;

[0018] Figure 8 It is a structural schematic diagram of the third embodiment of the electric drive axle with modular optional function according to the embodiment of the utility model;

[0019] Fig. 9 It is a structural schematic diagram of a fourth embodiment of an electric drive axle with modular optional function according to an embodiment of the utility model.

[0020] The reference numerals are:

[0021] 1. Bridge housing assembly; 2. Single-speed main reducer module; 21. Single-speed reducer; 3. Two-speed integrated main reducer module; 31. Two-speed reducer; 32. Differential; 33. Power shift mechanism; 4. Controller module; 5a. Drum brake wheel side module; 5b. Disc brake wheel side module. DETAILED DESCRIPTION

[0022] See also Figures 1 to 9As shown, according to an embodiment of the utility model, an electric drive axle with modular optional function is provided, including two main reducer modules installed on the front and rear sides of the bridge housing assembly 1, the two main reducer modules include at least one single-speed main reducer module 2, and / or at least one two-speed integrated main reducer module 3, the two main reducer modules are respectively adapted to drive motors, the controller module 4 is used to control the main reducer modules and the drive motors, at least one of the two main reducer modules is in a working state, the drive motor drives the main reducer in the main reducer module, the main reducer transmits power to the differential 32, and the differential 32 distributes power to the left half shaft and the right half shaft according to power demand. The main reducer, electronic control and wheel side assembly of the drive axle are designed as modular units, and the positioning and fastening hole positions between the relevant modules are designed through standardized interfaces, that is, the relevant hole positions are kept consistent as much as possible, thereby ensuring good interchangeability between the modules. Based on the demand, a variety of electric drive axles that meet the needs of multiple working conditions are matched, which effectively improves the adaptability of the working conditions of the electric drive axle, is more configurable, and has a wider range of applications. And it adopts modular configuration, when a fault occurs, it can be quickly replaced and repaired according to the faulty module, which effectively improves the convenience and timeliness of product maintenance, and fully reduces the applicable cost. At the same time, a single drive module, a dual drive module, and a multi-speed drive module can be selected according to the working conditions, which effectively improves the power performance of the electric drive axle, and the adaptability of the product to working conditions is fully improved. The two-speed reducer module enables the electric drive axle to simultaneously meet the use requirements of different working conditions such as low speed and high torque, high speed and small torque, and the product's power is more excellent.

[0023] Specifically, between the main reducer module and the bridge housing, by providing the same positioning stop, threaded fasteners of the same specification, the same pitch circle diameter, and bolt holes with the same uniform distribution between the connecting surfaces of the single-speed / two-speed integrated reducer module and the bridge housing, good interchangeability between different reducer modules is achieved, thereby realizing the selective assembly of the main reducer module.

[0024] Specifically, a universal electronic control unit is used between the controller module 4 and the main reducer module, which can meet the control requirements of single gear / two gears. At the same time, the same connection installation holes and fastener specifications are used, and the same installation holes are reserved on different main reducer modules, thereby realizing modular optional installation of the electronic control unit.

[0025] In a specific embodiment, drum brake wheel side modules 5a or disc brake wheel side modules 5b are provided at both ends of the bridge housing assembly 1. According to the installation space of the bridge housing assembly 1 and the overall structural setting requirements, a suitable brake structure is selected. By selecting the same wheel hub bearing specifications on the one hand, and using the same connection installation hole diameter between the brake base plate and the bridge housing on the other hand, it is effectively ensured that when different wheel side module configurations are required, they can be realized by overall replacement.

[0026] In a specific embodiment, the power matching type of the two main reducer modules includes: two single-speed main reducer modules 2, or two two-speed integrated main reducer modules 3, or one single-speed main reducer module 2 and one two-speed integrated main reducer module 3.

[0027] In a specific embodiment, when the power matching type is two of the two-speed integrated main reducer modules 3, or one of the single-speed main reducer module 2 and one of the two-speed integrated main reducer modules 3, the two-speed integrated main reducer module 3 includes a two-speed reducer 31, the differential 32 and a power shift mechanism 33. Since there is a shift on the two-speed side, a certain speed or torque impact will be generated. Arranging the differential 32 on the two-speed integrated main reducer module 3 side can effectively buffer the speed or torque impact, so that the transmission system has better carrying capacity.

[0028] In a specific embodiment, when the power matching type is two single-speed main reducer modules 2 , the single-speed main reducer module 2 includes a single-speed reducer 21 and the differential 32 .

[0029] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the utility model, and these improvements and variations should also be regarded as the protection scope of the utility model.

Claims

1. An electric drive axle with modular optional function, characterized in that: The invention comprises two main reducer modules installed at the front and rear sides of a bridge housing assembly (1), wherein the two main reducer modules include at least one single-speed main reducer module (2) and / or at least one two-speed integrated main reducer module (3), the two main reducer modules are respectively adapted to drive motors, a controller module (4) is used to control the main reducer modules and the drive motors, at least one of the two main reducer modules is in a working state, the drive motor drives the main reducer in the main reducer module, the main reducer transmits power to a differential (32), and the differential (32) distributes the power to a left half shaft and a right half shaft according to power demand.

2. The electric drive axle with modular optional function according to claim 1, characterized in that: Drum brake wheel side modules (5a) or disc brake wheel side modules (5b) are provided at both ends of the axle housing assembly (1).

3. The electric drive axle with modular optional function according to claim 1, characterized in that: The power matching type of the two main reducer modules includes: two single-speed main reducer modules (2), or two two-speed integrated main reducer modules (3), or one single-speed main reducer module (2) and one two-speed integrated main reducer module (3).

4. The electric drive axle with modular optional function according to claim 3, characterized in that: When the power matching type is two of the two-speed integrated main reducer modules (3), or one of the single-speed main reducer modules (2) and one of the two-speed integrated main reducer modules (3), the two-speed integrated main reducer module (3) comprises a two-speed reducer (31), the differential (32) and a power shift mechanism (33).

5. The electric drive axle with modular optional function according to claim 3, characterized in that: When the power matching type is two of the single-speed main reducer modules (2), the single-speed main reducer module (2) comprises a single-speed reducer (21) and the differential (32).

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