Rapid heat dissipation outer rotor motor

Abstract

The utility model discloses a rapid heat radiation external rotor motor. The device comprises two end covers, and the end covers are fastened and connected through a steel ring by using end cover screws. A bearing is embedded in the inner wall of the end cover, an oil seal is embedded in the outer wall of the end cover, and the same shaft coaxially penetrates through the oil seal and the bearing. The shaft is sleeved with an iron core support and an iron core, a winding is embedded in the iron core, and a wire harness connected with the winding penetrates through the shaft and extends out of the end cover. Magnetic steel is arranged on the inner wall of the steel ring, a plurality of radiating ribs are distributed on the outer edge of the side wall of the end cover, and a rim is sleeved on the periphery of the steel ring of part of the motor. During working, the winding interacts with the magnetic steel, and electric energy is converted into mechanical energy; the heat dissipation ribs increase the heat dissipation area, the end cover rotates along with the rotor and can stir air and accelerate heat transfer, the heat dissipation problem of the high-power outer rotor motor is effectively solved, the stability of the motor is improved, and the application scene is expanded.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric vehicle power system technical field especially relates to quick heat dissipation outer rotor motor. BACKGROUND

[0002] The outer rotor motor has a wide application in many fields due to its unique structural advantages, and its figure can be found in daily household appliances and industrial production automation equipment. It can output power more efficiently by setting the rotor outside the stator, and adapt to various load requirements. However, with the continuous expansion of industrial production scale and the increasing richness of household appliance functions, the demand for high-power outer rotor motors is increasingly prominent.

[0003] Most of the outer rotor motors in the current market do not have targeted heat dissipation design. In the low-power running scene, the heat generated by the motor is limited, and even without special heat dissipation means, it can basically maintain normal operation. However, once it involves high-power operation, the situation is completely different. The motor will generate a large amount of heat during long-term high-load operation. Due to the lack of effective heat dissipation mechanism, heat is easy to accumulate inside the motor, causing the motor temperature to rise rapidly, which not only causes the motor performance to decline and the output power to be discounted, but also greatly increases the risk of motor failure and even motor burnout, seriously affecting the stable operation of the equipment.

[0004] In view of a series of problems caused by poor heat dissipation of high-power outer rotor motor, it is urgent to develop an outer rotor motor with high heat dissipation capacity. Such a motor not only meets the power output demand under high-power working condition, but also can quickly dissipate the heat generated during operation, ensuring stable and reliable operation of itself, and thus meeting the high standard requirements of modern industry and life scene for efficient and durable operation of equipment. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a quick heat dissipation outer rotor motor.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The quick heat dissipation outer rotor motor comprises two symmetrically arranged end covers, a same steel ring is arranged between opposite end surfaces of the end covers, the two ends of the steel ring are respectively threadedly fastened and connected through end cover screws, a bearing is embedded in the center of the inner wall of the end cover, an oil seal is embedded in the center of the outer wall of the end cover, the oil seal and the bearing are coaxially inserted with a same shaft, an iron core support is sleeved on the outer circumferential surface of the shaft at the center position between the opposite ends of the end cover, an iron core is sleeved on the outer circumferential surface of the iron core support, a winding is embedded in the iron core, a wire harness is connected to the winding, the wire harness penetrates through the shaft and extends to the outside of the end cover, a magnetic steel is arranged on the inner circumferential surface of the steel ring, and a plurality of heat dissipation ribs are equidistantly distributed on the outer edge of the side wall of the end cover.

[0008] Preferably, a rim is sleeved on the outer circumferential surface of the steel ring.

[0009] The structural composition of the above scheme is as follows:

[0010] The end cover and the connecting part: the two symmetrically arranged end covers are provided with a same steel ring between the opposite end surfaces, the two ends of the steel ring are threadedly fastened and connected with the end cover through the end cover screws, and a stable motor shell main structure is formed. This connection mode not only ensures the structural strength, but also provides accurate installation positioning for the internal components.

[0011] The rotating and supporting part: a bearing is embedded in the center of the inner wall of the end cover, an oil seal is embedded in the center of the outer wall of the end cover, and a same shaft is coaxially inserted in the oil seal and the bearing. The shaft is a key supporting part for the rotation of the motor, and the shaft bearing is used to realize smooth rotation, and the oil seal plays a sealing protection role, so as to avoid dust and impurities from entering the inside of the motor and affecting the performance and service life of the motor.

[0012] The electromagnetic conversion core part: the iron core support is sleeved on the outer circumferential surface of the shaft at the center position between the opposite ends of the end cover, the iron core is sleeved on the outer circumferential surface of the iron core support, the winding is embedded in the iron core, the wire harness is connected to the winding, and the wire harness penetrates through the shaft and extends to the outside of the end cover. When the current flows into the winding through the wire harness, the winding and the magnetic steel mentioned later interact with each other by using the principle of electromagnetic induction, the rotor part is driven to rotate, and the conversion of electric energy into mechanical energy is completed.

[0013] The magnetic steel part: the magnetic steel is arranged on the inner circumferential surface of the steel ring, and the magnetic steel cooperates with the winding. The magnetic steel is a key element for the motor to realize stable electromagnetic drive, and the accurately arranged magnetic steel can generate a uniform and stable magnetic field, so as to promote the stable operation of the motor rotor.

[0014] The heat dissipation strengthening part: a plurality of heat dissipation ribs are equidistantly distributed on the outer edge of the side wall of the end cover. In the operating condition of the high-power motor, the heat generated by the motor can be conducted to the heat dissipation ribs through the end cover, the large-area heat dissipation ribs significantly increase the heat dissipation area and improve the heat dissipation efficiency. In addition, when the motor works, the rotor drives the end cover to rotate, and the heat dissipation ribs will stir the surrounding air, thereby strengthening the heat transfer effect.

[0015] Optional components: the outer periphery of the steel ring can also be sleeved with a rim, which expands the application scenarios of the motor, so that it can be adapted to more devices that need to drive loads, and meet different industrial or civilian needs.

[0016] Advantages

[0017] For the heat dissipation problem of high-power outer rotor motor, the setting of the heat dissipation rib greatly increases the heat dissipation area of the end cover. In combination with the agitation of air by the end cover rotating with the rotor, the heat transfer between the motor and the air is greatly accelerated, the operating temperature of the motor can be quickly reduced, the performance degradation and component damage risk caused by overheating are reduced, and the service life of the motor is prolonged.

[0018] The end cover, the steel ring, the shaft and other components are connected through precise embedding, threaded fastening and other connection methods, so as to ensure that the overall structure of the motor is stable, the relative positions of the key components are maintained accurately during high-speed operation, the electromagnetic conversion is stable and continuous, and the foundation for stable mechanical energy output of the motor is laid.

[0019] The optional design of being equipped with a rim makes the motor not only limited to simple power output, but also can directly interface with load devices that need to run by rolling, thereby expanding the application range of the motor in fields such as electric vehicles and automated logistics conveying equipment.

[0020] The above description is only a summary of the technical scheme of the present application. In order to more clearly understand the technical means of the present application, the content of the specification can be implemented, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The internal cross-sectional structure schematic diagram of the quick heat dissipation outer rotor motor proposed by the present application;

[0022] Figure 2 The external three-dimensional structure schematic diagram of the quick heat dissipation outer rotor motor proposed by the present application;

[0023] Figure 3 The top view structure schematic diagram of the quick heat dissipation outer rotor motor proposed by the present application;

[0024] Figure 4 The cross-sectional structure schematic diagram of the end cover and the shaft of the quick heat dissipation outer rotor motor proposed by the present application;

[0025] Figure 5 The side view structure schematic diagram of the quick heat dissipation outer rotor motor proposed by the present application.

[0026] In the figure: 1, end cover; 2, shaft; 3, core support; 4, core; 5, winding; 6, wire harness; 7, oil seal; 8, bearing; 9, magnetic steel; 10, steel ring; 11, rim; 12, end cover screw; 13, heat dissipation rib. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0028] Embodiment 1, refer to Figures 1 to 5 The fast heat dissipation outer rotor motor comprises two symmetrically arranged end covers 1, characterized in that the same steel ring 10 is arranged between opposite end faces of the end cover 1, the two ends of the steel ring 10 are respectively threadedly fastened and connected through end cover screws 12, the inner wall center of the end cover 1 is embedded with a bearing 8, the outer wall center of the end cover 1 is embedded with an oil seal 7, the oil seal 7 and the bearing 8 are coaxially inserted with the same shaft 2, the outer peripheral surface of the shaft 2 at the center position between the opposite ends of the end cover 1 is sleeved with a core support 3, the outer peripheral surface of the core support 3 is sleeved with a core 4, the inside of the core 4 is embedded with a winding 5, the winding 5 is connected with a wire harness 6, the wire harness 6 penetrates the shaft 2 and extends to the outside of the end cover 1, the inner wall ring surface of the steel ring 10 is provided with a magnetic steel 9, and the outer edge of the side wall of the end cover 1 is distributed with a plurality of heat dissipation ribs 13 at equal distances.

[0029] The outer peripheral surface of the steel ring 10 is sleeved with a rim 11.

[0030] Overall structure assembly

[0031] End cover and steel ring installation: two symmetrically arranged end covers 1 are prepared, the same steel ring 10 is placed between the opposite end faces of the two end covers 1, so that their positions are accurately aligned. Then, the two ends of the steel ring 10 are threadedly fastened and connected with the corresponding end covers 1 through end cover screws 12, so as to ensure firm and stable connection, thereby preliminarily building the shell frame part of the motor.

[0032] Shaft and related component installation: the bearing 8 is pre-embedded in the inner wall center of each end cover 1, and the oil seal 7 is embedded in the outer wall center. Then, the same shaft 2 is coaxially inserted through the oil seal 7 and the bearing 8. The core support 3 is sleeved on the outer peripheral surface of the shaft 2 at the center position between the opposite ends of the end cover 1, so that the end cover and the rim can smoothly rotate around the shaft 2. Then, the core 4 is sleeved on the outer peripheral surface of the core support 3, and the winding 5 is accurately embedded in the inside of the core 4, thereby completing the assembly of the key components of electromagnetic conversion.

[0033] Wire harness connection: the wire harness 6 is properly connected with the winding 5, and then the wire harness 6 penetrates the shaft 2 and extends to the outside of the end cover 1 through the channel reserved in the end cover 1, thereby facilitating the subsequent connection with external power supply equipment and the like.

[0034] Magnetic steel installation: the magnetic steel 9 is tightly installed on the inner wall ring surface of the rim 10, and the installation precision of the magnetic steel 9 is extremely crucial for the electromagnetic performance of the subsequent motor operation, so as to ensure that it is uniformly and stably attached to the rim 10.

[0035] Rim installation (optional): when the motor is equipped with the rim 11, the rim 11 is sleeved on the outer peripheral surface of the rim 10, so as to tightly cooperate with the rim 10, and meet the demand of the motor driving load in some application scenarios.

[0036] Working process

[0037] Starting operation: when the external power supply is connected to the wire harness 6, the current is passed into the winding 5, according to the principle of electromagnetic induction, the winding 5 and the magnetic steel 9 on the inner wall of the rim 10 generate mutual electromagnetic force, drive the iron core support 3, the iron core 4 and the rim 10 connected thereto to rotate around the shaft 2 together, and the motor starts to output mechanical energy to drive the external equipment to operate.

[0038] Heat dissipation process: during the operation of the motor, especially during the high-power operation, a large amount of heat is generated in each part of the motor. The heat is conducted to the end cover 1, at this time, the plurality of heat dissipation ribs 13 distributed at equal distances on the outer edge of the side wall of the end cover 1 begin to play a role, and the larger heat dissipation area can make the heat be more efficiently dissipated to the surrounding air. At the same time, since the rotor rotates to drive the end cover 1 to rotate, the end cover 1 acts like a rotating fan, which constantly stirs the air near the motor, accelerates the heat transfer between the motor and the air, so that the heat can be quickly transferred from the motor to the surrounding environment, maintains the internal temperature of the motor in a reasonable range, and guarantees the stable and continuous operation of the motor.

[0039] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A fast-heat dissipation external rotor motor, comprising two end caps (1), characterized in that, The end cap (1) is provided with the same steel ring (10) between opposite end faces. Both ends of the steel ring (10) are fastened by end cap screws (12). The center of the inner wall of the end cap (1) is provided with a bearing (8). The center of the outer wall of the end cap (1) is provided with an oil seal (7). The oil seal (7) and the bearing (8) are coaxially inserted with the same shaft (2). The shaft (2) is located at the center position between opposite ends of the end cap (1) and the outer circumference is provided with an iron core bracket (3). The outer circumference of the iron core bracket (3) is provided with an iron core (4). The iron core (4) is provided with a winding (5). The winding (5) is connected to a wire harness (6). The wire harness (6) passes through the shaft (2) and extends to the outside of the end cap (1). The inner wall of the steel ring (10) is provided with a magnet (9). The outer edge of the side wall of the end cap (1) is provided with multiple heat dissipation fins (13) at equal intervals.

2. The fast-heat dissipation external rotor motor according to claim 1, characterized in that, The outer circumference of the steel ring (10) is fitted with a rim (11).

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