System, apparatus, and method for active end turn cooling of an electric motor

Abstract

In various embodiments, systems, devices, and methods of distributing coolant to an electric motor are provided. The device includes: a disk configured with a set of apertures for coolant flow; an assembly comprising a set of links, a set of disks, and a single actuator motor, wherein the assembly is attached to the disk, wherein the single actuator motor is connected to the disks via a link mechanism that is capable of configuring a planar angle of the disk to obtain an optimal aperture position of the apertures for coolant flow; and in response to an external disturbance to the device, the single actuator motor is algorithmically controlled to change the planar angle of the disk to obtain an optimal aperture position that directs coolant flow to a target area of the electric motor, wherein the external disturbance causes a change in direction of the coolant flow from the target area of the electric motor.

Description

Technical Field

[0001] This technical field generally relates to oil-cooled motors, and more specifically to methods, systems, and apparatus for controlling the flow of coolant to uniformly distribute coolant on the windings of the motor stator, thereby preventing hotspots that could affect the motor's operability and lifespan. Background Technology

[0002] Electric vehicles (EVs) are widely used and serve as an alternative to internal combustion engine (ICE) vehicles to reduce carbon emissions into the atmosphere. EVs operate via electric motors powered by battery energy. In some cases, the electric motors of EVs can use oil-cooled systems. In this case, engine oil is used as a coolant to remove heat from the motor. Heat from the motor system is transferred across the entire surface of the electric motor windings via heat exchangers.

[0003] In a direct oil-cooled motor system, the coolant (oil) is in direct contact with the hot surface (i.e., the winding end turn, as an example in an oil motor). To obtain the best cooling performance of the oil motor, it is necessary or optimal to have a uniform distribution of cooling oil on the hot surface of the winding end turn to remove heat from the desired target area.

[0004] However, in active end-turn cooling oil flow systems, the direction of the cooling oil flow is influenced by external conditions that cause the active end-turn cooling oil flow to be unevenly distributed across the planar surface or desired hot surface exposed to the cooling oil flow. For example, the oil flow in the active end-turns may be disrupted or disturbed by external factors such as road gradient (road inclination) and lateral acceleration during vehicle cornering. When the vehicle undergoes this type of movement, the effect is that the oil flow is no longer a continuous, uniform flow across the winding surface or covering the target area. Instead, the oil flow is uneven and may even miss the target area, and therefore the oil coverage may or will be significantly reduced; this, in turn, leads to a deterioration in cooling efficiency. For example, due to the uneven distribution of the oil flow, hot spots may appear due to poor cooling of the engine windings, which could lead to premature failure of the electrical insulation compared to the typically expected failure of the specific type of insulation used in oil-cooled motors; this could also lead to overall failure of the oil-cooled motor.

[0005] A mechanism is desired to improve the coolant distribution in the active end-turn coolant system for motors, which is subject to common negative effects from external forces or disturbances to the coolant flow, such as those caused by a vehicle passing over an uneven surface or by lateral acceleration effects that interrupt or prevent the continuous and uniform flow of coolant in the engine windings.

[0006] The aim is to alter the direction of coolant flow in a way that counteracts the effects of oil flow disturbance caused by different (i.e., uneven) road gradients and the lateral acceleration experienced by the coolant as it is agitated by the vehicle, thereby enhancing oil distribution and improving cooling efficiency.

[0007] The aim is to utilize active nozzle control to counteract external forces or disturbances, where the nozzle direction is controlled to increase the flexibility of two-dimensional nozzle direction control.

[0008] Furthermore, other desirable features and characteristics of the invention will become apparent from the following detailed description and appended claims, taking into account the accompanying drawings and the foregoing technical and background information. Summary of the Invention

[0009] The present invention discloses a system, apparatus and method for implementing a four-bar linkage using a single actuator motor in response to external disturbances of a direct oil-cooled electric motor to guide coolant flow.

[0010] In one exemplary embodiment, a system for distributing coolant to an electric motor is disclosed. The system includes: a disc configured with a set of orifices for coolant flow; an assembly including a set of linkages, a set of discs, and a single actuator motor, wherein the assembly is attached to the disc in the device, and wherein the single actuator motor is connected to the set of discs via the set of linkages, enabling the configuration of the planar angle of the disc to obtain an optimal orifice position for the coolant flow; a set of conduits configured to pass through the set of orifices of the disc to distribute the coolant to a target area of ​​the electric motor; and, in response to external disturbances to the device, the single actuator motor is configured, via an algorithm, to change the planar angle of the disc to obtain the optimal orifice position, thereby guiding the coolant flow through the set of conduits and to the target area of ​​the electric motor, wherein the external disturbances cause the coolant flow from the target area of ​​the electric motor to change direction.

[0011] In at least one exemplary embodiment, the system includes a single actuator motor configured to adjust the plane angle of the disk via the algorithm to distribute the coolant flow uniformly over the target area of ​​the electric motor.

[0012] In at least one exemplary embodiment, the system includes the set of pipes comprising a combination of metal pipes and rubber pipes, wherein the metal pipe portions pass through the set of holes in the disc and are respectively connected to a set of nozzles for distributing coolant flow to the electric motor.

[0013] In at least one exemplary embodiment, the system includes the set of linkage mechanisms comprising at least one pair of linkage mechanisms coupled to and attached to the set of discs, wherein the pair of linkage mechanisms is controlled by the set of discs to move in a clockwise or counterclockwise direction, the movement being converted into two-dimensional planar motion of the disc, which causes the set of nozzles to be redirected so that the coolant flow can flow to the target area of ​​the electric motor.

[0014] In at least one exemplary embodiment, the system includes a target area of ​​the electric motor comprising a stator winding end turn, wherein the winding end turn is uniformly distributed with coolant through a set of nozzles, wherein the coolant flow is directionally controlled by a torque applied to a set of discs by a single actuator motor, thereby adjusting the plane angle of the discs and changing the direction of the coolant flow.

[0015] In at least one exemplary embodiment, the system includes a single actuator motor that performs a directional change action by applying torque to each disc via the set of linkages to adjust the direction of the coolant flow. This action translates into a change in the lateral angle and tumble angle of the disc's planar position, enabling the coolant flow to be redirected to a target area of ​​the electric motor.

[0016] In at least one exemplary embodiment, the algorithm is used by two-dimensional lateral planar motion toward the nozzle direction above the outer surface of the electric motor, thereby controlling the set of linkages, wherein each nozzle is connected to a corresponding pipe in the set of pipes, such that the coolant flow can be uniformly distributed on the outer surface of the electric motor.

[0017] In at least one exemplary embodiment, the system includes a first link of the linkage mechanism attached at one end of the linkage mechanism to an external position of a first disc, and a second link of the linkage mechanism attached at the opposite end of the linkage mechanism to an external position of a second disc, with the midpoint between the first and second links attached to the disc, wherein a torque applied by a single actuator motor causes rotation of the two discs, which is converted into a change in the lateral angle and tumble angle of the disc's planar position by displacement of each link in the linkage mechanism, resulting in a change in the nozzle direction of the coolant flow in response to external disturbances to the device.

[0018] In at least one exemplary embodiment, the system includes the single actuator motor configured by the algorithm to: obtain an achievable orifice location for coolant flow, the achievable orifice location having a minimum distance from the orifice location to a target region of the electric motor.

[0019] In at least one exemplary embodiment, the system includes the single actuator motor configured by the algorithm to induce two-dimensional planar motion in the transverse plane of the disk to obtain an achievable hole position through a figure-eight pattern.

[0020] In yet another exemplary embodiment, an apparatus is provided. The apparatus includes an assembly coupled to a disk, the assembly including a set of linkages, a set of discs, and an actuator motor, wherein the actuator motor is connected to the set of discs via the set of linkages to enable configuration of the planar angle of the disk to obtain an optimal orifice position for a set of orifices for coolant flow; a set of conduits configured to pass through the set of orifices of the disk to distribute coolant to a target area of ​​an electric motor; and, in response to an external disturbance to the apparatus, configuration of the actuator motor to be algorithmically controlled to change the planar angle of the disk to obtain the optimal orifice position to guide the coolant flow through the set of conduits to the target area of ​​the electric motor, wherein the external disturbance deflects the coolant flow from the target area of ​​the motor.

[0021] In at least one exemplary embodiment, the device includes an actuator motor configured to adjust the plane angle of the disk via an algorithm to distribute the coolant flow uniformly over a target area of ​​the electric motor.

[0022] In at least one exemplary embodiment, the device includes a set of pipes comprising a combination of metal pipes and rubber pipes, wherein the metal pipe portions pass through a set of holes in a disc and are respectively connected to a set of nozzles for distributing coolant flow to a motor.

[0023] In at least one exemplary embodiment, the device includes the set of linkage mechanisms comprising at least one pair of linkage mechanisms coupled to and attached to the set of discs, wherein the pair of linkage mechanisms is controlled by the set of discs to move in a clockwise or counterclockwise direction, the movement being converted into two-dimensional planar motion of the disc, which causes the set of nozzles to be redirected so that the coolant flow can flow to the target area of ​​the electric motor.

[0024] In at least one exemplary embodiment, the device includes an actuator motor that performs a directional change action by applying torque to each disc via the set of linkages to adjust the direction of the coolant flow. This action translates into a change in the lateral angle and tumble angle of the disc's planar position, enabling the coolant flow to be redirected to a target area of ​​the electric motor.

[0025] In at least one exemplary embodiment, the algorithm is used by two-dimensional lateral planar motion toward the nozzle direction above the outer surface of the electric motor, thereby controlling the set of linkages, wherein each nozzle is connected to a corresponding pipe in the set of pipes, such that the coolant flow can be uniformly distributed on the outer surface of the electric motor.

[0026] In at least one exemplary embodiment, the device includes an actuator motor controlled by an algorithm to obtain an achievable orifice location for coolant flow, the achievable orifice location having a minimum distance from the orifice location to a target area of ​​the electric motor.

[0027] In at least one exemplary embodiment, the device includes a single actuator motor controlled by an algorithm that induces two-dimensional planar motion in the transverse plane of the disk to obtain achievable hole positions through a figure-eight pattern.

[0028] In yet another exemplary embodiment, a method is provided for uniformly distributing coolant on the outer surface of an electric motor. The method includes configuring an assembly of a disk coupled to the device, the assembly including a set of links, a set of discs, and an actuator motor, wherein the actuator motor is connected via the set of links to the set of discs to enable configuration of the planar angle of the disk to obtain optimal orifice positions for a set of orifices for coolant flow; configuring a set of conduits through the set of orifices of the disk to distribute the coolant to a target area of ​​the electric motor; and configuring the actuator motor, in response to external disturbances to the device, to be algorithmically controlled to change the planar angle of the disk to obtain optimal orifice positions to guide the coolant flow through the set of conduits to the target area of ​​the electric motor, wherein the external disturbances deflect the coolant flow from the target area of ​​the motor.

[0029] In at least one exemplary embodiment, the method includes controlling the actuator motor via the algorithm to cause a change in the plane angle of the disk, thereby obtaining an achievable orifice position for the coolant flow, the achievable orifice position having a minimum distance from the orifice position to a target area of ​​the electric motor. Attached Figure Description

[0030] Exemplary embodiments will be described below in conjunction with the accompanying drawings, wherein the same reference numerals denote the same elements, and wherein:

[0031] Figure 1A and Figure 1B An exemplary side view is shown, representing a wetted area on the surface of the end-turn winding of the stator of an electric motor, which varies depending on the different accelerations of the electric vehicle of the exemplary embodiment.

[0032] Figure 2 A top view schematic diagram of a four-bar linkage according to an exemplary embodiment is shown, the four-bar linkage being attached to a disc having a stepper motor, wherein the direction of the pipe can be controlled by the angle of the motor according to an external force or vehicle status;

[0033] Figure 3 A side view schematic diagram of a plane and lateral angle and roll angle according to an exemplary embodiment is shown for changing the default hole position to the target hole position for allowing coolant to flow and distribute on the outer surface of the motor via a conduit;

[0034] Figure 4 A top view schematic diagram of the motion path of an actuator according to an exemplary embodiment is shown, which follows a figure-eight design to achieve an optimal orifice position relative to the target orifice position of the coolant system while the flow passes through the end-turn windings of the stator of the electric motor.

[0035] Figure 5 An exemplary schematic diagram is shown of the default hole position for the disk according to an exemplary embodiment, and the disk position of the assembly including a four-bar linkage, an actuator motor, and a disc for achieving the optimal hole position.

[0036] Figure 6 An exemplary diagram of a gravity-driven coolant system according to an exemplary embodiment is shown, depicting a combination of various components and controllers to achieve active control of the oil droplet direction, thereby avoiding uneven distribution due to lateral and tumbling accelerations; and

[0037] Figure 7 An exemplary flowchart is shown, which, according to an exemplary embodiment, aligns the piping in a two-dimensional direction in response to different external forces caused by vehicle operation for the flow distribution of coolant on the outer surface of the electric motor. Detailed Implementation

[0038] The following detailed description is exemplary in nature only and is not intended to limit application and use. Furthermore, it is not intended to be bound by any express or implied theory presented in the foregoing technical fields, background art, summary of the invention, or the following detailed description.

[0039] This document describes embodiments of the present disclosure in terms of functional and / or logical block components and various processing steps. It should be understood that such block components can be implemented by any number of hardware, software, and / or firmware components configured to perform specified functions. For example, embodiments of the present disclosure may employ various integrated circuit components, such as memory elements, digital signal processing elements, logic elements, lookup tables, etc., which can perform various functions under the control of one or more microprocessors or other control devices. Furthermore, those skilled in the art will understand that embodiments of the present disclosure can be implemented in conjunction with any number of systems, and the systems described herein are merely exemplary embodiments of the present disclosure.

[0040] This disclosure describes systems, apparatus, and methods for active end-turn coolant flow systems to prevent coolant oil from missing the designed target location of the hot surface of an electric motor, where such miss may occur in the presence of external disturbances such as non-zero road gradients and / or lateral acceleration due to turning. In this context, a novel linkage device is designed in which two-dimensional or multi-directional control is achieved using only a single actuator.

[0041] This disclosure describes systems, apparatus, and methods for controlling coolant in at least two directions, which do not require two actuators for control in each direction, but instead rely on a single actuator for bidirectional control, thereby improving coolant distribution while minimizing the system complexity of such control.

[0042] This disclosure describes systems, apparatus, and methods for an active end-turn coolant flow system that operates as an active system and does not require active sensors or multiple actuators and controllers (i.e., only a single actuator) that increase the cost and complexity of the cooling oil system.

[0043] This disclosure describes systems, apparatus, and methods for an active end-turn coolant flow system that utilizes a four-bar linkage capable of two-dimensional control using a single actuator.

[0044] This disclosure describes systems, apparatus, and methods for an active end-turn coolant flow system that implements a four-bar linkage configuration with a figure-eight motion path to distribute cooling oil at a target orifice location for optimal cooling. In this case, the target orifice location is considered the most achievable orifice location with the minimum distance from the target orifice position. Furthermore, the angle of coolant flow is configured via a four-bar linkage of a motor that enables the possible or achievable orifice location.

[0045] This disclosure describes systems, apparatus, and methods for an active end-turn cooling system for an electric motor, which actively controls the direction of oil droplets to avoid uneven oil distribution caused by external vehicle forces, at least lateral and rolling accelerations. This enables active oil distribution via metal and rubber pipes beneath the oil sump. Furthermore, this disclosure describes a pan attached to a four-bar linkage with a (stepping) motor to adjust the pan angle via motion of the linkage coupled to an actuator motor, achieving directional flow control. In this case, metal pipes are configured to pass through holes in the pan. The direction of the pipes can be controlled by a motor control angle algorithm capable of changing the direction angle of coolant flow in the pan based on lateral and rolling accelerations or vehicle state (i.e., dynamic or static motion).

[0046] Figure 1A and Figure 1B A side view is shown representing a (cooling oil) wetted area on the surface of the end-turn windings of an electric motor stator, which varies depending on the different accelerations of the electric vehicle according to an exemplary embodiment. Figure 1A The image shows a nozzle 10 that dispenses coolant onto a hot surface or planar region (e.g., end-turn winding) of an electric motor, where the coolant flow is gravity-driven. A coolant flow 30 is uniformly distributed across a surface 20, guiding the coolant to multiple target areas on the surface 20 without external interference caused by zero lateral acceleration. Figure 1B The diagram shows a significant reduction in coolant on multiple target areas of surface 20 because the coolant flow 30 is swayed or redirected from the target areas due to the force exerted by vehicle acceleration (in this case, 1G lateral acceleration). This results in a significant reduction in the wetted area exposed to the coolant, which in turn leads to poor cooling performance.

[0047] Figure 2 A top-view exemplary schematic diagram of a four-bar linkage attached to a disk having a stepper motor, according to an exemplary embodiment, is shown, wherein the direction of the pipe can be controlled by the angle of the motor based on external forces or vehicle conditions. Figure 2In the exemplary top view, there is a component 200 that enables a single actuator motor 215 to apply torque in response to external disturbances to change the plane angle of a disc (not shown) to obtain an optimal orifice position for guiding coolant flow through a set of conduits to the outer surface of a target area of ​​the electric motor. Component 200 includes a set of multiple discs (205, 220, 210, 225) linked to the single actuator motor 215. A torque 255 applied by the single actuator motor 215 in a clockwise or counterclockwise direction is transmitted to each disc (205, 220, 210, 225) to control the movement of each disc, which in turn allows the position of the endpoints of a four-bar linkage to move in a manner that causes a change in the plane angle of the disc (not shown) to obtain an optimal orifice position for coolant flow.

[0048] In an exemplary embodiment, a four-bar linkage is a planar mechanism consisting of four links forming a rotating kinematic pair. The four-bar linkage includes a fixed link and two rotating links.

[0049] exist Figure 2 In this four-bar linkage, sections (A), (B), (C), and (D) are used. Section (C) comprises two parts that connect two different discs. The first part, or linkage part 243, connects the outer point 235 of disc 210 to point 240, and the second part, or linkage part 241, connects the outer point 230 of disc 205 to point 240. Point 240 can be fixed to a portion of the disc.

[0050] In an exemplary embodiment, when a clockwise torque 255 is applied by a single actuator motor 215, the disc 205 can receive a counterclockwise torque and rotate in a counterclockwise direction 245. This is because the ends of the linkages in segment (C) are configured to connect at an outer point 235 of the disc 210, with the opposite ends at 230 connecting to an outer point 230 of the disc 205. As the disc 205 rotates in one direction and the disc 210 rotates in the opposite direction, the lateral angle and rolling angle between each linkage portion will change with the distance the two discs rotate to point 240 (i.e., the change in linkage portions (241, 243) relative to each other). This translates to a two-dimensional lateral planar motion of the nozzles on the outer surface of the electric motor, where each nozzle (not shown) is coupled to a corresponding conduit in this set of conduits, allowing the coolant flow to be uniformly distributed on the outer surface of the electric motor. Furthermore, a single actuator motor 215 is controlled by an algorithm to obtain an achievable orifice position for the coolant flow, which has a minimum distance from the orifice position to the target area of ​​the electric motor by moving in a two-dimensional plane in the transverse plane of the disk according to a figure-eight pattern.

[0051] Figure 3 A side view schematic diagram of the planar angle, lateral angle, and roll angle according to an exemplary embodiment is shown, which is used to change the default hole position to the target hole position for achieving coolant flow distribution via a pipe above the outer surface of the electric motor. To obtain the lateral angle and roll angle to obtain the target hole position, the planar position of the disc is depicted by a plane 305 having a target hole position 315 and a default hole position 310. Actuator motor 215 ( Figure 2 A torque and rotation determined by an algorithm are applied to induce movement in a four-bar linkage, which moves plane 305 such that the default hole position 310 is adjusted to the most achievable hole position with the minimum distance from the target hole position 315. Actuator motor 215 ( Figure 2 The algorithm-based control actions obtain a roll angle of 325° and a lateral angle of 320° to achieve the most feasible hole position.

[0052] Figure 4 A top view schematic diagram of the motion path of an actuator motor according to an exemplary embodiment is shown. This actuator motor uses a four-bar linkage for figure-eight planar motion to achieve an optimal orifice position relative to the target orifice position of the coolant system while flow passes through the stator end-turn windings of the electric motor. Figure 4 In the diagram, the motion path is considered an exemplary pattern configuration that can be modified as needed. The actuator motor is programmed to follow this motion path to achieve an optimal orifice position relative to the target orifice position of the coolant system while flow passes through the stator end-turn windings of the electric motor. Therefore, it is conceivable that the two-dimensional motion path described by the figure-eight pattern can be modified or altered according to the desired response to external disturbances to control the nozzle direction and coolant flow.

[0053] exist Figure 4 In this process, the actuator motor 215 is programmed to cause the movement path of the default hole position 420 to follow a figure-eight pattern 410 in an attempt to achieve the most achievable hole position 430, thereby applying torque to a set of discs connected to the four-bar linkage. That is, the clockwise and counterclockwise movements of the actuator motor 215 are translated into two-dimensional planar movements (i.e., translational planar positions) of the plane 305 following the figure-eight pattern 410 in the lateral X and Y coordinate directions.

[0054] Figure 5 An exemplary diagram of an active end-turn cooling system for an electric motor is shown according to an exemplary embodiment, wherein default hole positions and components are included in a tray to achieve optimal hole positions. Figure 5A disk 510 is depicted, with a set of holes 520 positioned at corresponding four hole locations within the disk 510. An assembly 560 for two-dimensional control is depicted having elements including a single actuator motor 555, a set of discs 550, and a four-bar linkage 530 positioned on one side of the disk 510, while the set of holes 520 is positioned on the other side.

[0055] In an exemplary embodiment, the actuator motor 555 actively controls the direction of the oil droplets according to the instructions of the algorithm to avoid uneven oil distribution due to lateral and tumble acceleration. Metal and rubber pipes below the oil trough (not shown) pass through a set of holes 520 and are connected to a set of nozzles. A disc 510 is attached to a four-bar linkage 530 and to a metal pipe passing through the holes 520 on the disc 510. The direction of the pipes is controlled by the angle of the actuator motor 555. The control algorithm changes the steering angle based on lateral and tumble acceleration or the vehicle state (moving or stationary).

[0056] Figure 6 An exemplary diagram of a gravity-driven coolant system according to an exemplary embodiment is shown, depicting a combination of various components and controllers to achieve active control of the direction of oil droplets, thereby avoiding uneven distribution due to lateral acceleration and tumbling acceleration. Figure 6 A gravity-driven coolant flow system 600 is depicted, which includes an oil tank 683, a rubber pipe 615, and a metal pipe 620 that passes through a default positioning hole 617 of a disc 605 and is connected to a nozzle 625 for realizing coolant flow and distributing coolant to a target area on the outer surface 680 of an electric motor 655.

[0057] Component 660 is contained in disk 605 and as Figure 5 The element shown, positioned on one side of disc 605, includes a four-bar linkage 663 connected to disc 605 and also coupled to a set of discs 665 and an actuator motor 670. The actuator motor 670 is connected to a controller 630, which controls the direction of the pipes and nozzles via the angle of the actuator motor 670 and is attached at 610 to a gravity-driven coolant flow system. The controller 630 includes a memory 635 for storing programming instructions for a control algorithm 640 to change the angle based on lateral and rolling acceleration or vehicle state.

[0058] Control algorithm 640 is configured to counteract external disturbances from sensor input 685, correcting for disturbance directions that may not align with the vehicle's orientation, and to move the nozzle position in two dimensions to counteract the disturbances. A four-bar linkage 663 enables two-dimensional control via control algorithm 640, using only a single actuator motor 670 instead of multiple actuator motors, to achieve the most feasible default orifice position 617, allowing coolant to flow over a target area on the outer surface 680 of the electric motor 655. The electric motor 655 includes a stator 690 and end-turn windings 695. The end-turn windings 695 are where conductors (windings) connect the turns to other straight sections. Most of the cooling from the (oil) coolant flow occurs on the end-turns (i.e., the target area), as it is the only area exposed to coolant via nozzle 625.

[0059] Figure 7 An exemplary flowchart is shown, which, according to an exemplary embodiment, aligns the piping in a two-dimensional direction in response to different external forces caused by vehicle operation for the flow distribution of coolant on the outer surface of the electric motor.

[0060] exist Figure 7 In step 710, the controller, in response to sensor input, obtains the lateral angle and roll angle relative to the target hole position to counteract external interference. In step 720, the controller obtains the most feasible hole position with the minimum distance from the target hole position. In step 730, the controller obtains the angle of the actuator motor capable of achieving this most feasible hole position. In step 740, the controller, based on a control algorithm, causes a single actuator motor to apply a clockwise or counterclockwise motion to change the lateral angle and roll angle of the disk plane via a four-bar linkage. In step 750, the change in the lateral angle and roll angle of the plane is converted into a two-dimensional XY coordinate change of the default hole position relative to the feasible hole position via the four-bar linkage. In step 760, the nozzle direction is redirected by the controller's two-dimensional control action to allow coolant to flow to the target area on the outer surface of the electric motor.

[0061] It should be understood that Figure 7 The process can include any number of additional or alternative tasks. Figure 7 The tasks shown do not need to be performed in the order shown, and Figure 7 The process can be incorporated into a more comprehensive process or process with additional functions not described in detail herein. Furthermore, as long as the intended overall functionality remains intact, it can be derived from… Figure 7 The embodiments of the process shown are omitted. Figure 7 One or more tasks are shown.

[0062] The foregoing detailed description is merely illustrative in nature and is not intended to limit the embodiments of the subject matter or the application and use of such embodiments. As used herein, the word "exemplary" means "serving as an example, instance, or illustration." Any implementation described herein as exemplary is not necessarily to be construed as preferred or advantageous over other implementations. Furthermore, it is not intended to be bound by any express or implied theory presented in the foregoing technical field, background art, or specific embodiments.

[0063] While at least one exemplary embodiment has been presented in the foregoing detailed description, it should be understood that numerous variations exist. It should also be understood that the one or more exemplary embodiments are merely examples and are not intended to limit the scope, applicability, or configuration of this disclosure in any way. Rather, the foregoing detailed description will provide those skilled in the art with a convenient roadmap for implementing one or more exemplary embodiments.

[0064] It should be understood that various changes may be made to the function and arrangement of the elements without departing from the scope of this disclosure as set forth in the appended claims and their legal equivalents.

Claims

1. A system for distributing coolant to an electric motor in a device, comprising: The disc is equipped with a set of holes for coolant flow; An assembly including a set of linkages, a set of discs, and a single actuator motor, wherein the assembly is attached to the disc in the device, and wherein the single actuator motor is connected to the set of discs via the set of linkages, which allows the plane angle of the disc to be configured to obtain the optimal hole position of the set of holes for the coolant flow. A set of pipes configured to pass through the set of holes in the disc to distribute the coolant to the hot surface of the electric motor; as well as In response to external disturbances to the device, a single actuator motor is configured to be controlled by an algorithm to change the plane angle of the disc to obtain the optimal orifice position, so as to guide the coolant flow through the set of pipes and to the hot surface of the electric motor, wherein the external disturbance causes the coolant flow from the hot surface of the electric motor to change direction.

2. The system according to claim 1, further comprising: A single actuator motor is configured to adjust the plane angle of the disk via the algorithm so that the coolant flow is evenly distributed on the hot surface of the electric motor.

3. The system according to claim 1, further comprising: The set of pipes includes a combination of metal pipes and rubber pipes, wherein the metal pipe portions pass through the set of holes in the disc and are respectively connected to a set of nozzles for distributing coolant flow to the electric motor.

4. The system according to claim 3, further comprising: The linkage mechanism includes at least one pair of linkage mechanisms connected to and attached to the set of discs, wherein the pair of linkage mechanisms is controlled by the set of discs to move in a clockwise or counterclockwise direction, the movement being converted into two-dimensional planar motion of the disc, which causes the set of nozzles to be redirected so that the coolant flow can flow to the hot surface of the electric motor.

5. The system according to claim 4, further comprising: The hot surface of the electric motor includes the hot surface of the stator winding end turns, wherein the hot surface of the winding end turns is uniformly distributed with coolant through a set of nozzles, wherein the coolant flow is directionally controlled by a torque applied to a set of discs by a single actuator motor, thereby adjusting the plane angle of the discs and changing the direction of the coolant flow.

6. The system according to claim 5, further comprising: A single actuator motor achieves a directional change by applying torque to each disc via the set of linkages to adjust the direction of the coolant flow. This action translates into a change in the lateral and tumble angles of the disc's planar position, enabling the coolant flow to be redirected to the hot surface of the electric motor.

7. The system according to claim 6, wherein, The algorithm is used to control the set of linkages by means of two-dimensional lateral planar motion toward the nozzles above the outer surface of the electric motor, wherein each nozzle is connected to a corresponding pipe in the set of pipes, so that the coolant flow can be uniformly distributed on the outer surface of the electric motor.

8. The system according to claim 7, further comprising: The first link in the linkage is attached at one end of the linkage to the outer position of the first disc, and the second link in the linkage is attached at the opposite end of the linkage to the outer position of the second disc, with the midpoint between the first and second links attached to the disc. A torque applied by a single actuator motor causes rotation of both discs, which, through displacement of each link in the linkage, translates into changes in the lateral and tumble angles of the disc's planar position, causing the nozzle direction of the coolant flow to change in response to external disturbances to the device.

9. The system according to claim 1, further comprising: The single actuator motor is configured via the algorithm as follows: Obtain the feasible orifice location for coolant flow, which has a minimum distance from the orifice location to the hot surface of the electric motor; and A two-dimensional planar motion is induced in the horizontal plane of the disk to obtain the position of the achievable hole through a figure-eight pattern.

10. A method for uniformly distributing coolant on the outer surface of an electric motor of a device, comprising: An assembly for configuring a disk connected to the device includes a set of links, a set of discs, and an actuator motor, wherein the actuator motor is connected to the set of discs via the set of links to enable the configuration of the planar angle of the disk to obtain the optimal hole position of a set of holes on the disk for coolant flow. A set of pipes is configured to pass through the set of holes in the disc to distribute the coolant to the hot surface of the electric motor; In response to external interference with the device, the actuator motor is configured to be controlled by an algorithm to change the plane angle of the disc to obtain an optimal hole position to guide the coolant flow through the set of pipes to the hot surface of the electric motor, wherein the external interference changes the direction of the coolant flow from the hot surface of the motor. as well as The actuator motor is controlled by the algorithm to cause a change in the plane angle of the disk, thereby obtaining an achievable orifice position for the coolant flow, the achievable orifice position having a minimum distance from the orifice position to the hot surface of the electric motor.

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