Electric drive integrated device

Abstract

The utility model relates to an electric drive integrated device which comprises a propeller, a motor layer, a motor controller layer and a cooling layer which are integrally arranged in series along the axial direction of a connecting shaft. The motor layer is arranged between the aircraft propeller and the motor controller layer; the motor controller layer is arranged between the motor layer and the cooling layer; the cooling layer is provided with a heat dissipation module and cooling liquid. The electric drive integrated device is used for the integrated design of the electric drive system of the electric aircraft, and the integration degree of the electric drive system is improved, so that the weight of the system is reduced, and the performance of the electric aircraft is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation power supply systems, and in particular relates to an electric drive integrated device. Background Art

[0002] The electric drive system, including the motor and motor controller, is the key technology supporting the development of electric aircraft and will directly affect the overall performance of the aircraft. Among them, high power density is the main parameter in the design process of the main drive motor of new energy aircraft. The motor drive controller and the controller need to adopt a high power density design solution. It is necessary to optimize the heat dissipation structure and improve integration through a trade-off analysis of the power architecture to reduce weight and improve performance.

[0003] There are two main development trends in the electric drive system of electric aircraft. One is to use dual three-phase motors, that is, six-phase motors with two sets of motor controllers to ensure the redundancy and safety of the system. The other is to use an integrated design of motors and motor controllers to improve integration.

[0004] Archer has developed two motors, one for tilting and one for fixing. The main difference between the two is the top shell, but the core is the same. Midnight's motor is not a direct-drive propeller or rotor, but is equipped with a reduction system, so that the motor itself has a higher speed and can achieve greater torque, which is good for reducing weight, reducing volume, and improving responsiveness. The motor integrates a speed change device and an electronic control system, with a peak power of 125kW and a total weight of only 25kg.

[0005] Prior art 1 (US11787551B1) describes the integration of Archer electric drive system. The propulsion system of Joby S4 consists of 6 tiltable electric propellers, each propeller is driven by two motors, each motor has a rated power of 70KW, and each motor is provided with redundant power by two controllers. The motor and controller are integrated together, and the 4 propellers located on the outside are tilted together with the entire cabin structure where the propellers are located. Utility Model Content

[0006] In order to overcome the problems existing in the prior art, the utility model provides an electric drive integrated device.

[0007] An electric drive integrated device, the device comprising: a propeller, a motor layer, a motor controller layer and a cooling layer, wherein the propeller, the motor layer, the motor controller layer and the cooling layer are integrally arranged in series along the axial direction of the connecting shaft of the propeller;

[0008] The motor layer is arranged between the propeller and the motor controller layer;

[0009] The motor controller layer is arranged between the motor layer and the cooling layer;

[0010] The cooling layer is provided with a radiator and a coolant.

[0011] According to the aspects described above and any possible implementation, an implementation is further provided, wherein a cooling pump is further provided in the cooling layer, and cooling channels corresponding to the cooling pump are provided in the motor layer and the motor controller layer.

[0012] According to the above aspects and any possible implementation, there is further provided an implementation, wherein the number of the cooling channels corresponds one-to-one to the number of the cooling pumps.

[0013] According to the above aspects and any possible implementation, there is further provided an implementation, wherein the cooling pump is symmetrically arranged about the connecting axis.

[0014] According to the above aspects and any possible implementation manner, there is further provided an implementation manner, wherein the cooling layer is further provided with a groove, and the motor controller layer is provided inside the groove.

[0015] According to the above aspects and any possible implementation manner, an implementation manner is further provided, wherein a cooling cavity is further provided in the cooling layer, and the coolant is provided in the cooling cavity.

[0016] According to the above aspects and any possible implementation manner, there is further provided an implementation manner, wherein the radiator is disposed on a peripheral outer wall of the cooling layer.

[0017] According to the above aspects and any possible implementation, an implementation is further provided, wherein the heat sink includes a heat dissipation surface arranged on the peripheral outer wall of the cooling layer and heat dissipation fins arranged on the heat dissipation surface.

[0018] According to the aspects described above and any possible implementation, an implementation is further provided, wherein the motor controller layer is provided with a motor controller power component, and the power device is close to a cooling back plate for dissipating heat for the motor controller power component.

[0019] Beneficial effects of the utility model

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The electric drive integrated device of the utility model comprises: a propeller, a motor layer, a motor controller layer and a cooling layer, wherein the propeller, the motor layer, the motor controller layer and the cooling layer are axially connected in series and integrated along the connecting shaft of the propeller; the motor layer is arranged between the propeller and the motor controller layer; the motor controller layer is arranged between the motor layer and the cooling layer; the cooling layer is provided with a heat dissipation module and a coolant. The electric drive integrated device of the utility model is used for the integrated design of the electric drive system of an electric aircraft, improves the integration of the electric drive system, thereby reducing the weight of the system and improving the performance of the electric aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the structure of the device;

[0023] Figure 2 It is the cooling schematic diagram of the device;

[0024] Figure 3 is a structural schematic diagram of a radiator;

[0025] Figure 4 It is a structural diagram of the motor controller layer;

[0026] Figure 5 Schematic diagram of the cooling layer structure. DETAILED DESCRIPTION

[0027] In order to better understand the technical solution of the utility model, the content of the utility model is not limited to the specific implementation methods described below, and similar technologies and methods should be considered within the scope of protection of the utility model. In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0028] It should be clear that the embodiments described in the present invention are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0030] like Figure 1 and Figure 2As shown, the utility model provides an electric drive integrated device, the device comprising: an aircraft propeller 1, a motor layer 3, a motor controller layer 4 and a cooling layer 5, wherein the aircraft propeller 1, the motor layer 3, the motor controller layer 4 and the cooling layer 5 are axially connected in series and integrated along a connecting shaft 2;

[0031] The motor layer 3 is arranged between the propeller 1 of the aircraft and the motor controller layer 4, wherein the motor windings are all immersed in the coolant 6, and the heat generated by the motor windings is taken away through the cooling channels 9 and 9';

[0032] The motor controller layer 4 is arranged between the motor layer 3 and the cooling layer 5;

[0033] The cooling layer 5 is provided with a radiator 7 and a coolant 6. Figure 3 As shown, the radiator 7 includes a heat dissipation surface 10 arranged on the peripheral outer wall of the cooling layer 5 and heat dissipation fins 11 arranged on the heat dissipation surface 10, and the heat dissipation fins 11 are used to absorb the heat generated by the motor and the motor controller.

[0034] The motor, motor controller and cooling system are coaxially assembled 2, and a radiator 7 and coolant 6 arranged in a cooling layer 5 are used to provide a cooling channel for the device. Finally, the heat of the motor and the motor controller is transferred to the radiator 7, and then the flow from the propeller 1 is used to dissipate the heat of the radiator 7 using an air heat sink.

[0035] Preferably, cooling pumps 8 and 8' are also provided in the cooling layer 5, and the cooling pumps are implemented by speed-regulating pumps. Cooling channels 9 and 9' corresponding to the cooling pumps 8 and 8' are provided in the motor layer 3 and the motor controller layer 4, and the cooling channels 9 and 9' bring the heat generated by the motor windings and the motor controller power devices 12 into the cooling layer 5 through the coolant 6.

[0036] Preferably, the number of the cooling channels 9 and 9 ′ corresponds to the number of the cooling pumps 8 and 8 ′.

[0037] Preferably, the cooling pumps 8 and 8 ′ are symmetrically arranged with respect to the connecting shaft 2 of the propeller 1 .

[0038] Preferably, a groove is further provided in the cooling layer 5, and the motor controller layer 4 is arranged inside the groove. This approach is beneficial to increasing the volume of the location where the coolant 6 is located and reducing the overall weight of the device.

[0039] Preferably, a cooling cavity is further provided in the cooling layer 5, and the coolant 6 is provided in the cooling cavity, and the coolant 6 dissipates heat for the motor and the motor controller.

[0040] Preferably, if Figure 4As shown, the motor controller layer 4 is provided with a motor controller power device 12 which is attached to a cooling back plate 13 , and the heat generated by the motor controller power device 12 is taken away by cooling channels 9 and 9 ′.

[0041] like Figure 5 As shown, the cooling layer 5 also includes a temperature and flow sensor 15 and a liquid cooling pipe 14. The liquid cooling pipe 14 is arranged around the cooling back plate 13, in which the coolant 6 flows, and is integrated in the cavity of the cooling layer 5. The liquid cooling pipe 14 also has a branched liquid cooling pipe 14' connected to the cooling pumps 8 and 8', wherein the direction of the arrow is the flow direction of the coolant in the liquid cooling pipes 14 and 14', and the temperature and flow sensor 15 is arranged on the outer tube wall of the branched liquid cooling pipe 14', for sensing the temperature and flow rate of the coolant 6 in the tube.

[0042] The coolant 6 is transferred to the motor and the motor controller through the cooling channel by the cooling pumps 8 and 8', and the heat is transferred to the heat dissipation fins 11, and the propeller 1 is used to flow to the heat dissipation fins 11 for heat dissipation.

[0043] The utility model can greatly improve the power density of the electric drive system by integrating the electric drive integrated device.

[0044] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. An electric drive integrated device, characterized in that: The device comprises: A propeller, a motor layer, a motor controller layer and a cooling layer, wherein the propeller, the motor layer, the motor controller layer and the cooling layer are integrally arranged in series along the axial direction of the connecting shaft of the propeller; The motor layer is arranged between the propeller and the motor controller layer; The motor controller layer is arranged between the motor layer and the cooling layer; The cooling layer is provided with a radiator and a coolant.

2. The electric drive integrated device according to claim 1, characterized in that: A cooling pump is also provided in the cooling layer, and cooling channels corresponding to the cooling pump are provided in the motor layer and the motor controller layer.

3. The electric drive integrated device according to claim 2, characterized in that: The number of the cooling channels corresponds to the number of the cooling pumps.

4. The electric drive integrated device according to claim 2, characterized in that: The cooling pump is symmetrically arranged about the connecting axis.

5. The electric drive integrated device according to claim 2, characterized in that: The cooling layer is further provided with a groove, and the motor controller layer is arranged inside the groove.

6. The electric drive integrated device according to claim 1, characterized in that: A cooling cavity is also provided in the cooling layer, and the coolant is provided in the cooling cavity.

7. The electric drive integrated device according to claim 1, characterized in that: The radiator is arranged on the peripheral outer wall of the cooling layer.

8. The electric drive integrated device according to claim 7, characterized in that: The radiator comprises a heat dissipation surface arranged on the peripheral outer wall of the cooling layer and heat dissipation fins arranged on the heat dissipation surface.

9. The electric drive integrated device according to claim 2, characterized in that: The motor controller layer is provided with a motor controller power component, and a cooling back plate is provided at the bottom for dissipating heat for the motor controller power component.

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