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CN-122001151-A - Birotor motor with high-efficient cooling system

CN122001151ACN 122001151 ACN122001151 ACN 122001151ACN-122001151-A

Abstract

The invention discloses a double-rotor motor with an efficient heat dissipation system, which comprises a stator assembly and a rotor assembly which are arranged in series. The rotor assembly is provided with an air cooling heat dissipation module and a liquid cooling heat dissipation module, the air cooling heat dissipation module comprises an air ring which can rotate relatively, and the air ring is provided with an air catching opening and an air outlet opening. The rotor assembly is also provided with a temperature control switching device, the device locks the air ring to realize air cooling heat dissipation when the temperature is lower than a threshold value through the matching of the bimetallic strip and the elastic pin, and releases the locking when the temperature exceeds the threshold value, so that the air ring rotates relatively and drives the liquid cooling module to work. The liquid cooling module comprises a liquid storage mechanism which is pressurized by centrifugal force, a liquid delivery pipe which pumps cooling liquid through the rolling wheel mechanism and a spray head which faces the air gap. The intelligent switching device realizes intelligent switching of air cooling and liquid cooling modes, effectively solves the heat dissipation problem caused by compact structure of the double-rotor motor, and ensures continuous and stable operation of the motor under high-temperature working conditions.

Inventors

  • Shen Juliang
  • ZHU ZHONGJIE
  • GU XUEMING
  • ZHU XIAODONG
  • CHEN YUNFENG
  • XU YUE

Assignees

  • 京马电机有限公司

Dates

Publication Date
20260508
Application Date
20260410

Claims (10)

  1. 1. The utility model provides a birotor motor with high-efficient cooling system, includes two stator module (1) and two rotor module (2) that correspond that establish ties, its characterized in that: the rotor assembly (2) is provided with an air cooling heat dissipation module (3) and a liquid cooling heat dissipation module (4); the air-cooled heat dissipation module (3) comprises an air-cooled component which can be controlled to rotate relative to the rotor assembly (2); The air cooling component is in driving connection with the liquid cooling radiating module (4); The rotor assembly (2) is also provided with a temperature control switching device (5); the temperature control switching device (5) is arranged as follows: when the internal temperature of the double-rotor motor is lower than a threshold value, locking the air cooling component, so that the air cooling component synchronously rotates along with the rotor to execute air cooling heat dissipation; When the internal temperature of the double-rotor motor is higher than a threshold value, the locking of the air cooling component is released, so that the air cooling heat dissipation module (3) rotates relatively in the rotor rotation environment, and the liquid cooling heat dissipation module (4) is driven to start as a power source, and an air cooling and liquid cooling parallel mode is realized.
  2. 2. A dual rotor motor with a high efficiency heat dissipating system as set forth in claim 1 wherein said air cooling means comprises an air ring (31) rotatably mounted around said rotor assembly (2), said air ring (31) having radially protruding air catching openings (311) and axially extending air outlets (312), said air outlets (312) being disposed toward the air gap of the dual rotor motor.
  3. 3. The dual rotor motor with efficient heat dissipation system as set forth in claim 2, wherein an adjusting plate (313) is disposed on a side surface of the air ring (31) where the air outlet (312) is formed, and a relative position between the adjusting plate (313) and the air outlet (312) is adjusted to control a size of the air outlet (312).
  4. 4. A dual rotor motor with a high efficiency heat dissipating system as set forth in claim 1 wherein said stator assembly (1) is provided with an air deflector (11), said air deflector (11) extending axially to form an air duct with said stator assembly (1) for introducing axially blown cooling air into the air gap.
  5. 5. A dual rotor motor with a high efficiency heat dissipating system as set forth in claim 4 wherein said air deflector (11) has a plurality of air deflectors (11) circumferentially spaced apart to provide a path for the flow of hot air from the air gap.
  6. 6. The dual-rotor motor with the efficient heat dissipation system as set forth in claim 1, wherein a radially extending installation channel (21) is formed on the rotor assembly (2), and the temperature control switching device (5) is arranged in the installation channel (21); The temperature control switching device (5) includes: A bimetal (51) fixedly installed at the bottom of the installation channel (21); An elastic pin (52) axially slidably disposed in the mounting passage (21) and supported by the bimetal (51); When the temperature is lower than the threshold value, the bimetallic strip (51) keeps an initial shape, and the elastic pin (52) is pushed to enable the elastic pin (52) to extend out of the mounting channel (21) partially and be inserted into the clamping groove (314) of the air cooling component so as to realize locking; when the temperature is higher than the threshold value, the bimetallic strip (51) jumps downwards due to heating, and generates an avoidance space, and the elastic pin (52) retracts after elastic recovery and exits the clamping groove (314) to unlock the wind ring (31).
  7. 7. The dual rotor motor with efficient heat dissipation system as set forth in claim 1, wherein the liquid cooling heat dissipation modules (4) have at least two groups and are arranged in a central symmetry manner, and the liquid cooling heat dissipation modules (4) comprise: a liquid storage mechanism (41) coaxially provided at an end of the rotor assembly (2); The infusion tube (42) is coaxially laid outside the rotor assembly (2), and one end of the infusion tube (42) is communicated with the liquid storage mechanism (41); the spray head (43) is arranged on the rotor assembly (2) and communicated with the air gap, and an inlet of the spray head (43) is connected with the other end of the infusion tube (42); The rolling wheel mechanism (44) is arranged on the rotor assembly (2) and is in driving connection with the air cooling component; the rolling wheel mechanism (44) is driven by the rotating air ring (31) to rotate so as to pump the cooling liquid in the infusion tube (42) into the spray head (43) under pressure.
  8. 8. A dual rotor motor having a high efficiency heat dissipating system as set forth in claim 7, wherein said rolling wheel mechanism (44) comprises: the pressure shell (441) is fixedly arranged on the rotor assembly (2) and is provided with a circular arc-shaped cavity, and the infusion tube (42) penetrates through the cavity and is attached to the inner wall of the circular arc-shaped cavity; The rolling wheel assembly (442) is rotatably arranged on the pressure shell (441), the rotating shaft of the rolling wheel assembly (442) is parallel to the rotating axis of the air cooling component, at least three rollers (443) are circumferentially arranged on the rolling wheel assembly (442), and the rollers (443) are used for sequentially rolling the infusion tube (42) in the rotating process; And the transmission assembly (444) is used for connecting the air cooling component and the rolling wheel assembly (442) and transmitting the rotation of the air cooling component to the rolling wheel assembly (442).
  9. 9. A dual rotor motor having a high efficiency heat dissipating system as set forth in claim 8 wherein said drive assembly (444) comprises gear A (445) and gear B (446), said gear A (445) being coaxially coupled to said roller assembly (442), said gear B (446) being coaxially coupled to said wind ring (31), said gear A (445) being meshed with gear B (446).
  10. 10. A dual rotor motor having a high efficiency heat dissipating system as set forth in claim 7, wherein said reservoir mechanism (41) comprises: a case (411) coaxially fixed to an end face of the rotor assembly (2); a plurality of dividing strips (412) which are arranged in the box body (411) and divide the box body (411) into a plurality of sector-shaped storage grids (413); a pressurizing module (414) which is arranged on the dividing strip (412) in a radial sliding way; the supercharging spring pieces (415) are arranged between adjacent supercharging modules (414), and two ends of each supercharging spring piece (415) are connected with the supercharging modules (414) in a sliding mode; a counterweight (416) disposed on the pressurizing spring piece (415); when the rotor assembly (2) rotates, the balancing weight (416), the pressurizing module (414) and the pressurizing spring piece (415) move outwards in the radial direction under the action of centrifugal force, and exert stable radial pressure on the cooling liquid in the storage grid (413) together.

Description

Birotor motor with high-efficient cooling system Technical Field The invention relates to a motor, in particular to a double-rotor motor with an efficient heat dissipation system. Background The double-rotor motor mainly comprises an inner concentric type structure and an outer concentric type structure and a parallel shaft type structure. The inner and outer concentric double-rotor motor is widely applied to the scenes of electric automobile power distribution mechanisms (such as planetary gear carriers), high-precision mechanical arm joints and the like by virtue of high integration and structural compactness. Compared with the traditional single-rotor motor, the core structure of the double-rotor motor is characterized in that two single-rotor motor units are coaxially connected in series, namely, two stator-rotor pairs are highly integrated along the axial direction and matched with an optimized electromagnetic circuit design, so that the fusion of functions and the miniaturization of the volume are realized. However, this highly integrated structural design, while providing performance and space advantages, also presents a significant challenge for thermal management of the motor. The heat dissipation degradation is mainly caused by the following two aspects: The axial heat dissipation path is blocked, the axial structure of the motor is not through, the inner space is divided by the two motor units and the supporting structure, and the axial circulation of air is seriously blocked. This makes the efficiency of the conventional air cooling means by axial convection of the air itself greatly reduced, and it is difficult to timely conduct out the internal heat. The heat island superposition effect is that two independent heat sources (motor units) are closely arranged in the axial direction, so that the heating areas of the two independent heat sources are mutually overlapped and connected, and a stronger and more concentrated axial super heat source is formed by combining. The concentration of the heat source not only causes the heat generation quantity (power density) of a unit volume to be increased, but also causes the heat to be accumulated seriously in the middle area of the motor to form a high-temperature hot spot, so that the heat dissipation condition is not deteriorated linearly. The direct consequence of the above problems is that when the dual-rotor motor is operated under continuous high load, internal heat cannot be timely dissipated, the motor is continuously heated and exceeds a threshold value, overheat protection is extremely easy to trigger and is forced to stop running, and the stability, reliability and continuous working capacity of equipment operation are severely restricted. Therefore, in order to solve the technical bottleneck, it is needed to develop a high-efficiency and rapid heat dissipation system capable of coping with the special structure of the dual-rotor motor, especially capable of rapidly intervening when the motor is overheated, so as to realize accurate and strong cooling, thereby ensuring long-time stable operation of the motor. Disclosure of Invention The invention aims to provide a double-rotor motor with an efficient heat dissipation system, which can implement efficient heat dissipation on the motor when the temperature of the motor reaches a protection critical value, and ensure that the motor can maintain stable operation for a long time. In order to achieve the above purpose, the present invention provides the following technical solutions: a dual-rotor motor with a high-efficiency heat dissipation system comprises two stator assemblies and two corresponding rotor assemblies, wherein the two stator assemblies are arranged in series; the rotor assembly is provided with an air cooling heat dissipation module and a liquid cooling heat dissipation module; the air cooling heat dissipation module comprises an air cooling component which can be controlled to rotate relative to the rotor assembly; The air cooling component is in driving connection with the liquid cooling radiating module; The rotor assembly is also provided with a temperature control switching device; The temperature control switching device is arranged as follows: when the internal temperature of the double-rotor motor is lower than a threshold value, locking the air cooling component, so that the air cooling component synchronously rotates along with the rotor to execute air cooling heat dissipation; when the internal temperature of the double-rotor motor is higher than a threshold value, the locking of the air cooling component is released, so that the air cooling heat dissipation module rotates relatively in a rotor rotation environment, and the liquid cooling heat dissipation module is driven to start by taking the air cooling heat dissipation module as a power source, and an air cooling and liquid cooling parallel mode is realized. Preferably, the air cooling component comprises an air ring r