New energy electric vehicle motor rotor and stator separation device

Abstract

The invention discloses a new energy electric vehicle motor rotor and stator separation device which comprises a base platform, a stator clamp module is arranged on the base platform 1 and used for fixing a motor stator and ensuring that the stator is kept stable in the separation process, and a driving module is arranged above the stator clamp module and used for driving the stator clamp module to rotate. The bottom of the driving module is fixedly connected with an extrusion plate; the stator clamp module comprises a driving guide module, the driving guide module is installed on the peripheral side of the base platform, at least three movable supporting seats are arranged on the driving guide module, and the supporting seats are evenly distributed around a stator and used for bearing the weight of the stator and a rotor and axial force applied during separation. And the motor can adapt to the sizes of motors of most brands in the market. The invention belongs to the technical field of motor rotor and stator separation, and particularly relates to a new energy electric vehicle motor rotor and stator separation device.

Description

Technical Field

[0001] The present invention belongs to the technical field of motor rotor and stator separation, and specifically relates to a device for separating the motor rotor and stator of a new energy electric vehicle. Background Art

[0002] In the field of new energy electric vehicles, the motor is a core component whose performance directly affects the overall performance of the vehicle. Separating the rotor and stator is a critical operation during motor maintenance, repair, and recycling.

[0003] Currently, traditional separation methods primarily include heating demagnetization and current polarity reversal. The heating demagnetization method heats the permanent magnet material above the Curie temperature to achieve demagnetization, thereby separating the rotor and stator. However, this method has significant drawbacks. High-temperature heating can not only cause residual magnetism in the permanent magnets, affecting motor performance and stability and reducing energy conversion efficiency, but can also cause irreversible damage to other components within the motor, such as plastics, shortening the motor's service life. Furthermore, this method requires bulky equipment and specialized firefighting equipment, significantly increasing equipment cost and system complexity. Current polarity reversal demagnetization methods, including DC polarity reversal demagnetization and AC demagnetization, achieve demagnetization by periodically changing the direction and magnitude of the current. However, this method is complex and difficult to implement. Precise calculation of the rotor field current is required to determine the demagnetization ampere-turns. Miscalculation can easily cause rotor winding short circuits, generating unbalanced magnetic flux, ultimately burning the winding insulation, and leading to rotor ground faults. Furthermore, this method requires significant equipment and resources, making it relatively cost-effective.

[0004] In addition to the problems with demagnetization methods, the characteristics of the motor itself also pose challenges to separation. New energy electric vehicle motors typically weigh 50-100 kg, with a gap of only 0.1-0.2 mm between the rotor and stator. Due to the strong magnetic field, separation requires a force of approximately 100 kg. In actual maintenance operations, maintenance workers have to carry heavy motors and use tools to forcibly separate them, which is not only difficult but also poses significant safety risks and can easily lead to dangerous accidents. These problems seriously restrict the maintenance efficiency and safety of new energy electric vehicle motors and increase maintenance costs. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a new energy electric vehicle motor rotor and stator separation device.

[0006] To achieve the above functions, the present invention adopts the following technical solutions: A device for separating the rotor and stator of a new energy electric vehicle motor includes a base platform, a stator clamp module is provided on the base platform for fixing the motor stator to ensure that the stator remains stable during the separation process, a drive module is provided above the stator clamp module, and an extrusion plate is fixedly connected to the bottom of the drive module;

[0007] The stator clamp module includes a drive guide module, which is installed on the circumferential side of the base platform. The drive guide module is provided with at least three movable support seats, which are evenly distributed around the stator and are used to bear the weight of the stator and rotor and the axial force applied during separation, and can adapt to the motor sizes of most brands on the market.

[0008] Preferably, the driving guide module includes a side panel, one end of the side panel is fixed with a support frame connected to the driving module, the support frame is fixedly connected to a mounting block, the driving module is mounted on the mounting block, a threaded rod is provided on the side panel for horizontal rotation, a driving motor connected to the threaded rod is installed at the bottom of the support frame, the threaded rod is threadedly connected to a connecting block fixed to the bottom of the support seat, and the connecting block is slidingly arranged relative to the side panel.

[0009] Preferably, the drive module is a dual-mode drive module, which can be optionally driven by a screw or a hydraulic system. The screw is a 45 steel trapezoidal thread with a self-locking function to ensure that it will not loosen during the separation process. The axial force is applied by the screw motor with a maximum load of 1000kg. The hydraulic system includes a double-acting hydraulic cylinder, a proportional control valve and a pressure feedback unit. The double-acting hydraulic cylinder has a cylinder diameter of Φ80mm, a stroke of 700mm, and a maximum thrust of 15kN. The hydraulic pump station is equipped with a variable plunger pump with a pressure range of 0-25MPa and a flow adjustment range of 0-20L / min. The control valve group integrates a proportional directional valve, a relief valve and a pressure compensator.

[0010] Preferably, the support seat is provided with an arc-shaped supporting plate, and the longitudinal section of the supporting plate is L-shaped.

[0011] Preferably, the stator clamp module can be any one of mechanical clamping, electromagnetic clamping or pneumatic assisted locking.

[0012] The present invention adopts the above structure to achieve the following beneficial effects:

[0013] 1. It can achieve rapid and safe separation of the motor rotor and stator, solving the difficulties of traditional motor structures in maintenance and recycling. Through the adjustable stator clamp module, it can adapt to the sizes of most new energy vehicle motors on the market, has a wide range of applicability, and reduces the need for customization of different motor models. The mechanical separation method avoids the risk of component damage caused by high-temperature demagnetization or current demagnetization, and improves operational safety and efficiency.

[0014] 2. Taking full account of the danger of motor separation operations, the traditional dangerous separation method has been fundamentally changed. With this device, maintenance workers no longer need to perform high-risk handling and smashing operations, which greatly reduces the probability of safety accidents during motor maintenance, ensures the personal safety of workers, and meets the requirements of enterprise safety production management.

[0015] 3. Improving the recycling rate of motors and reducing the impact of discarded motors on the environment are in line with the concept of sustainable development and are key drivers of the environmentally friendly development of new energy vehicles.

[0016] 4. The use of 45 steel material ensures that the device can operate stably under high load conditions and meet the mechanical requirements during the motor separation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a new energy electric vehicle motor rotor and stator separation device proposed by the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of a new energy electric vehicle motor rotor and stator separation device proposed by the present invention. Figure 2 ;

[0019] Figure 3 This is a cross-sectional view of a device for separating the rotor and stator of a new energy electric vehicle motor proposed by the present invention;

[0020] Figure 4 This is a schematic diagram of the overall structure of a new energy electric vehicle motor rotor and stator separation device proposed by the present invention. Figure 3 ;

[0021] Figure 5 This is a cloud diagram of the support base of the new energy electric vehicle motor rotor and stator separation device proposed by the present invention when no force is applied;

[0022] Figure 6 This is a cloud diagram after force is applied to the support base of the new energy electric vehicle motor rotor and stator separation device proposed by the present invention.

[0023] Among them, 1. base platform, 2. stator clamp module, 3. drive module, 4. extrusion plate, 5. drive guide module, 6. support seat, 7. side plate, 8. support frame, 9. mounting block, 10. threaded rod, 11. drive motor, 12. connecting block, 13. screw, 14. hydraulic system, 15. support plate. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," "outside," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-6 As shown, the present invention proposes a new energy electric vehicle motor rotor and stator separation device, comprising a base platform 1, a stator clamp module 2 is provided on the base platform 1, for fixing the motor stator to ensure that the stator remains stable during the separation process, a driving module 3 is provided above the stator clamp module 2, which applies axial force to separate the rotor and stator, and an extrusion plate 4 is fixedly connected to the bottom of the driving module 3;

[0027] The stator clamp module 2 includes a drive guide module 5, which is installed on the side of the base platform 1. The drive guide module 5 is provided with at least three movable support seats 6. These support seats 6 are evenly distributed around the stator and are used to bear the weight of the stator and rotor and the axial force applied during separation, and can adapt to the motor sizes of most brands on the market.

[0028] The stator clamp module 2 can be any one of mechanical clamping, electromagnetic clamping or pneumatic assisted locking.

[0029] like Figure 1 、 3As shown, the driving guide module 5 includes a side panel 7, one end of which is fixed with a support frame 8 connected to the driving module 3, and the support frame 8 is fixedly connected to a mounting block 9. The driving module 3 is mounted on the mounting block 9, and a threaded rod 10 is provided on the side panel 7 for horizontal rotation. A driving motor 11 connected to the threaded rod 10 is installed at the bottom of the support frame 8, and a connecting block 12 fixed to the bottom of the support seat 6 is threadedly connected to the threaded rod 10. The connecting block 12 is slidingly arranged relative to the side panel 7, and the driving motor 11 drives the threaded rod 10 to rotate, and the threaded rod 10 drives the connecting block 12 and the support seat 6 to move, thereby clamping and fixing stators of different sizes. The driving module 3 drives the extrusion plate 4 to move downward, pushes out the rotor, and realizes the separation of the rotor and the stator. There is an arc-shaped supporting plate 15 on the support seat 6, and the longitudinal section of the supporting plate 15 is L-shaped, which fits the shape of the stator and increases stability.

[0030] like Figure 1 、 4 As shown, the drive module 3 is a dual-mode drive module, which can be driven by the screw 13 or the hydraulic system 14. The screw 13 is a 45 steel trapezoidal thread with a self-locking function to ensure that it will not loosen during the separation process. The axial force is applied by the screw 13 motor with a maximum load of 1000kg. The hydraulic system 14 includes a double-acting hydraulic cylinder, a proportional control valve and a pressure feedback unit. The double-acting hydraulic cylinder has a cylinder diameter of Φ80mm, a stroke of 700mm, and a maximum thrust of 15kN. The hydraulic pump station is equipped with a variable plunger pump with a pressure range of 0-25MPa and a flow adjustment range of 0-20L / min. The control valve group integrates a proportional directional valve, a relief valve and a pressure compensator.

[0031] During specific use, the position of the support base 6 of the stator clamp module 2 is adjusted according to the model and size of the motor to be separated to ensure that the support base 6 can stably fix the motor stator.

[0032] Separation operation (screw 13 drive): Start the screw 13 motor, the motor drives the screw 13 to rotate, and converts the rotational motion into axial force. Since the screw 13 adopts a trapezoidal thread and meets the self-locking condition, under the action of the axial force, it drives the extrusion plate 4 to squeeze the rotor, and gradually separates the rotor and the stator.

[0033] Separation operation (driven by hydraulic system 14): Start the hydraulic pump station to put the hydraulic system 14 into working state. In the first-level separation (preloading stage), the pressure of the hydraulic system 14 is adjusted to 5MPa through the control valve group. At this time, the hydraulic cylinder piston slowly extends, and the low pressure is used to push the piston to eliminate the residual magnetic attraction in the gap between the rotor and the stator; then, enter the second-level separation (main separation stage), increase the pressure to 15MPa, and the hydraulic cylinder outputs the maximum thrust to achieve rapid separation of the rotor and stator. When the separation is close to completion, enter the third-level separation (buffer stage), reduce the pressure to 3MPa, and adjust the flow through the proportional valve to gradually reduce the piston movement speed to avoid impact at the end of the separation and smoothly complete the separation operation.

[0034] After analyzing the force cloud map of the support seat 6, it can be seen that the maximum stress in the green area of ​​the cloud map at the edge of the support seat 6 is 8.2N / m2, and the yield force is 2.83N / m2. Figure 5 、 6 For the simulation experiment, stress cloud analysis was applied. The maximum displacement of the platform was 0.038 mm. The analysis result did not reach the critical stress value point. The variables and stress and strain were all within the design range. Therefore, the design strength of this component can meet the use requirements.

[0035] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A device for separating the rotor and stator of a new energy electric vehicle motor, characterized by: The invention comprises a base platform (1), wherein a stator clamp module (2) is provided on the base platform (1) for fixing the motor stator to ensure that the stator remains stable during the separation process, a driving module (3) is provided above the stator clamp module (2), and an extrusion plate (4) is fixedly connected to the bottom of the driving module (3); The stator clamp module (2) includes a drive guide module (5), which is installed on the peripheral side of the base platform (1). The drive guide module (5) is provided with at least three movable support seats (6). These support seats (6) are evenly distributed around the stator and are used to bear the weight of the stator and rotor and the axial force applied during separation, and can adapt to the sizes of most brands of motors on the market.

2. The device for separating the rotor and stator of a new energy electric vehicle motor according to claim 1, characterized in that: The driving guide module (5) comprises a side plate (7), one end of the side plate (7) is fixed with a support frame (8) connected to the driving module (3), the support frame (8) is fixedly connected with a mounting block (9), the driving module (3) is mounted on the mounting block (9), a threaded rod (10) is provided on the side plate (7) for horizontal rotation, a driving motor (11) connected to the threaded rod (10) is installed at the bottom of the support frame (8), the threaded rod (10) is threadedly connected with a connecting block (12) fixed to the bottom of the support seat (6), and the connecting block (12) is slidably arranged relative to the side plate (7).

3. The device for separating the rotor and stator of a new energy electric vehicle motor according to claim 1, characterized in that: The driving module (3) is a dual-mode driving module (3) and can be driven by a screw (13) or a hydraulic system (14). The screw (13) is a 45 steel trapezoidal thread with a self-locking function to ensure that it will not loosen during the separation process. The axial force is applied by the screw motor with a maximum load of 1000kg. The hydraulic system (14) includes a double-acting hydraulic cylinder, a proportional control valve and a pressure feedback unit. The double-acting hydraulic cylinder has a cylinder diameter of Φ80mm, a stroke of 700mm, and a maximum thrust of 15kN.

4. The device for separating the rotor and stator of a new energy electric vehicle motor according to claim 2, characterized in that: The support seat (6) is provided with an arc-shaped supporting plate (15), and the longitudinal section of the supporting plate (15) is L-shaped.

5. The device for separating the rotor and stator of a new energy electric vehicle motor according to claim 1, characterized in that: The stator clamp module (2) can be any one of mechanical clamping, electromagnetic clamping or pneumatic assisted locking.

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