Motor, cooling control method for the same, and mobility device equipped with the same

Abstract

To provide a motor structure in which heat of the motor which may be generated by a stator coil can be actively controlled.SOLUTION: A motor 100 includes a stator 110 that is disposed in a housing and has a plurality of stator coils repeatedly arranged in a circumferential direction, and a thermoelectric module that is disposed on the housing in order to cool the plurality of stator coils. The thermoelectric module can include a substrate, one or more pairs each consisting of N-type and P-type pellets that are alternately mounted on the substrate, and a coupling electrode that mutually couples the N-type and P-type pellets at side surfaces.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a motor, a cooling control method thereof, and a mobility device equipped with the same. [Background technology]

[0002] Generally, electric motors can be classified into DC motors and AC motors depending on the power source used. AC motors can be classified into synchronous motors and induction motors depending on their structure. Synchronous motors are highly efficient and easy to control, but are difficult to manufacture and relatively expensive. Induction motors are widely used due to their simple structure, resistance to external impacts, and low cost.

[0003] In recent years, as research and development into electric vehicles has accelerated, the demand for electric motors has also increased significantly. Electric motors used as drive sources for electric vehicles are typically high-speed and high-power electric motors.

[0004] Mobility devices, including hybrid electric vehicles, air mobility, etc., are partially or completely driven by motors rather than conventional internal combustion engines. The motors for such mobility devices may have a stator coil wound with a wire such as a coil, and a rotor with a rotor magnetic material such as a permanent magnet.

[0005] However, there is a problem that the performance of the motor may be reduced due to heat generated by the copper windings widely used in the stator coil. To reduce the resulting decrease in motor efficiency, active research is being conducted on technologies to effectively cool the motor, but the effectiveness of these technologies is questionable and there are problems. Summary of the Invention [Problem to be solved by the invention]

[0006] In order to solve at least some of the above problems, an object of the present invention is to provide a motor structure that can actively control heat generated by the stator coils of the motor.

[0007] The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those having ordinary skill in the art to which the present invention pertains from the following description. [Means for solving the problem]

[0008] To achieve the above object, a motor according to one embodiment of the present invention includes a stator provided inside a housing and having a plurality of stator coils repeatedly arranged in a circumferential direction, and a thermoelectric module provided in the housing for cooling the plurality of stator coils, wherein the thermoelectric module includes a substrate, at least one pair of N-type and P-type pellets alternately mounted on the substrate, and a connecting electrode interconnecting the N-type and P-type pellets at their sides.

[0009] Here, the motor may include a rotor that is provided inside the stator, is rotatable about a rotation axis, and has a magnetic body that interacts with the stator coil to generate a rotational force.

[0010] Here, an insulating layer may be provided on the upper surface of the substrate on which the N-type pellet and the P-type pellet are mounted.

[0011] Here, the N-type pellet and the P-type pellet may be covered with an insulating layer except for the portion where the connection electrode is connected.

[0012] Here, metal solder joints may be provided between the N-type pellet and the P-type pellet and the connecting electrodes.

[0013] Here, the thermoelectric module may include N-type pellets and P-type pellets alternately mounted on the substrate in the circumferential direction and the optical axis direction.

[0014] Here, the connection electrodes may be alternately provided on both sides of the N-type pellet and the P-type pellet and connected in series.

[0015] Here, the thermoelectric module may include the N-type pellets and the P-type pellets mounted on a plurality of separated substrates, and the plurality of separated substrates may be arranged at regular intervals in a circumferential direction.

[0016] Here, the thermoelectric module may be inserted into a slot provided in the housing.

[0017] Here, the thermoelectric module may be attached to an outer surface of the housing.

[0018] Here, the substrate may be a flexible substrate.

[0019] In addition, a motor cooling control method according to one embodiment of the present invention may include a sensing step of sensing a temperature of a motor housing, and a control step of comparing the temperature of the housing sensed in the sensing step with a set temperature and selecting and operating a thermoelectric module provided in the housing in either a thermoelectric generation mode or a Peltier mode (cooling mode).

[0020] Here, the set temperature can be set to 100 degrees.

[0021] Here, the control unit can operate the thermoelectric module in a thermoelectric power generation mode if the temperature sensed in the sensing step is equal to or lower than the set temperature, and can operate the thermoelectric module in a Peltier mode (cooling mode) if the temperature sensed in the sensing step exceeds the set temperature.

[0022] Here, when the control unit operates the thermoelectric module in a thermoelectric power generation mode, the generated electricity is stored in a battery, and when the control unit operates the thermoelectric module in a Peltier mode (cooling mode), the electricity stored in the battery can be used.

[0023] To achieve the above object, a mobility device according to one embodiment of the present invention may include a body, at least one driving means provided on the body, a battery provided on the body, and a motor according to one embodiment of the present invention connected to the battery and providing driving force to the at least one driving means. [Effects of the Invention]

[0024] A motor for a mobility device according to one embodiment of the present invention provides a motor structure that can actively control heat generated by the stator coil of the motor, and can be used for cooling or power generation depending on the heat generation state of the motor.

[0025] The motor according to an embodiment of the present invention can be implemented with simple structural changes, so there is no need for major changes compared to the prior art, and performance is improved, resulting in substantial cost savings.

[0026] The effects of the present invention are not limited to those described above, and other effects not mentioned here will be clearly recognized by those skilled in the art from the following description. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is an assembled perspective view of a motor according to an embodiment of the present invention; [Figure 2] 1 is an exploded perspective view of a motor according to an embodiment of the present invention; [Figure 3] 1 is a cross-sectional view of a motor according to an embodiment of the present invention. [Figure 4] FIG. 10 is a cross-sectional view of a motor according to another embodiment of the present invention. [Figure 5]FIG. 10 is a cross-sectional view of a motor according to another embodiment of the present invention. [Figure 6] 1 is a perspective view of an embodiment of a thermoelectric module applied to a motor according to an embodiment of the present invention; [Figure 7] 1 is a plan view of an embodiment of a thermoelectric module applied to a motor according to an embodiment of the present invention; [Figure 8] 1 is a side view of an embodiment of a thermoelectric module applied to a motor according to an embodiment of the present invention. [Figure 9] 3A and 3B are a detailed side view and an enlarged view of a unit pellet of a thermoelectric module applied to a motor according to an embodiment of the present invention; [Figure 10] FIG. 10 is a plan view of an embodiment of a thermoelectric module applied to a motor according to another embodiment of the present invention. [Figure 11] FIG. 10 is a plan view of an embodiment of a thermoelectric module applied to a motor according to another embodiment of the present invention. [Figure 12] 1 is a conceptual diagram of a motor temperature control device according to an embodiment of the present invention. [Figure 13] 1 is a conceptual diagram of a motor temperature control method according to an embodiment of the present invention. [Figure 14] 1 is a perspective view showing an example of a mobility device to which a motor according to an embodiment of the present invention is applied; [Figure 15] 1 is a perspective view showing an example of a mobility device to which a motor according to an embodiment of the present invention is applied; [Figure 16] 1 is a perspective view showing an example of a mobility device to which a motor according to an embodiment of the present invention is applied; DETAILED DESCRIPTION OF THE INVENTION

[0028] Since the present invention can be modified in various ways and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail, but this is not intended to limit the present invention to the specific embodiments, and it should be understood that the present invention includes all modifications, equivalents, and alternatives that fall within the spirit and technical scope of the present invention.

[0029] Terms such as "first," "second," etc. may be used to describe various components, but the components should not be limited by these terms. These terms are used only to distinguish one component from another. For example, a first component may be termed a "second component," and similarly, a second component may be termed a "first component," without departing from the scope of the present invention. The term "and / or" includes a combination of multiple associated listed items or any of multiple associated listed items.

[0030] The terms "section, part, portion, etc." may be used to describe various components, but the components should not be limited by these terms. The terms may refer not only to components that are physically / visibly separated, but also to terms that describe the function or configuration of the part even if the division / division is not clearly defined.

[0031] The terms used in this application are merely used to describe specific embodiments and are not intended to limit the present invention. The singular expressions include the plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" and the like specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the presence or additional possibility of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0032] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which this invention pertains. Terms as defined in commonly used dictionaries should be interpreted as having a meaning consistent with the contextual meaning of the relevant art, and should not be interpreted as having an ideal or overly formal meaning unless expressly defined in this application.

[0033] In this specification, a mobility device may move in a space related to land, underground, air, space, sea, and / or underwater, depending on the space it moves in. A land or underground mobility device may be provided in the form of, for example, a vehicle, a robot, etc., and an air or space mobility device is air mobility, which may be provided in the form of, for example, a conventional fixed-wing or rotary-wing aircraft, the recently actively developed Advanced Air Mobility (AAM), an unmanned aerial vehicle or drone, a rocket, a satellite-mounted vehicle, etc. A sea or underwater mobility device may be, for example, a ship, a submarine, etc. A mobility device is not limited to a specific space and may be a mobile body capable of moving in all of the above spaces, i.e., a mobile body capable of moving between multiple spaces, such as an amphibious vehicle, a flying vehicle, etc.

[0034] In the following description, terms used in relation to directions, such as "forward," "rearward," "side," "front," "rear," "upper," "upper part," "lower," "lower part," "left and right," etc., are defined based on the vehicle or vehicle body. Furthermore, terms such as "first" and "second" may be used to describe various components, but these components are not limited in order, size, position, or importance by the terms such as "first" and "second," and are named only to distinguish one component from another.

[0035] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

[0036] As is well known, a motor includes a stator and a rotor, and is configured so that the rotor rotates due to electromagnetic interaction between the stator and rotor. Motors include permanent magnet synchronous motors (PMSMs) that use a magnetic material (permanent magnets using rare earth metals or superconducting wires (copper, aluminum, etc.)) in the rotor, and wound field synchronous motors (WFSMs) that have a field coil wound around the rotor.

[0037] Furthermore, the motor has a problem in that the motor's performance may be reduced due to heat generated by the copper windings, which are commonly used as stator coils (of course, this is not limited to this, and various magnetic materials such as copper can be used for the stator coils). The present invention aims to solve this problem by using an active cooling structure using a thermoelectric element.

[0038] 1 and 2, a motor 100 according to an embodiment of the present invention may include a stator 110 and a rotor 150. The rotor 150 is fixedly installed on a rotation shaft 180, and the rotor 150 can rotate together with the rotation shaft 180 and around the rotation shaft 180 inside the stator 110.

[0039] Meanwhile, although not shown in the drawings, a structure in which the stator is provided inside the rotor is also included in embodiments of the present invention. That is, the stator may be provided in a cylindrical or columnar shape, the rotor may be provided in a cylindrical shape so as to surround the outside of the stator, and the rotor surrounding the outside of the stator may rotate around a rotation axis. For convenience of explanation, the following description will focus on a structure in which the rotor is provided inside the stator.

[0040] In the following, the direction in which the rotation axis extends is defined as the axial direction, the direction perpendicular to the rotation axis is defined as the radial direction, and the direction in which the rotor rotates around the rotation axis is defined as the circumferential direction.

[0041] The motor 100 of this embodiment may include a stator coil 135 in the stator 110, and a magnetic body 170 in the rotor 150 that interacts with the stator coil 135 to generate a rotational force. The magnetic body 170 may be a permanent magnet (such as a rare earth metal), a superconducting wire, a copper or aluminum wire, or the like.

[0042] An air gap is provided between the stator 110 and the rotor 150 to facilitate rotation of the rotor 150, and thus a magnetic air gap length can be formed between the stator 110 and the rotor 150.

[0043] The motor 100 of this embodiment may include a stator 110 including a housing 120 having a plurality of stator coils 135 arranged repeatedly in the circumferential direction, and a rotor 150 having a rotor body 160 rotatably mounted around a rotation axis 180 inside the stator 110 and equipped with a magnetic material 170 that interacts with the stator coils 135.

[0044] The stator coil 135 may be provided in a stator body 130 provided inside the housing 120 .

[0045] The stator 110 may include a cylindrical housing 120 and stator coils 135 repeatedly provided in the circumferential direction inside the housing 120. The motor 100 of this embodiment may be realized as a motor having various phases, such as a 3-phase, 4-phase, or 5-phase motor, depending on the arrangement of the stator coils 135.

[0046] 3 to 5, an active cooling structure for a motor 100 according to one embodiment of the present invention is disclosed, which may include a housing 120, a stator 110 provided inside the housing 120 and having a plurality of stator coils 135 repeatedly arranged in the circumferential direction, and a thermoelectric module 140 provided in the housing 120 for cooling the plurality of stator coils 135.

[0047] The thermoelectric module 140 is a device that can harvest energy through heat exchange from the energy generated by copper loss (reduction in motor efficiency due to heat generated in copper windings) inside the motor using a thermoelectric element (e.g., BiTe-based), and can cool the motor by adding electrical energy when the temperature of the motor rises. The thermoelectric element can refer to a semiconductor element, and in the present invention, the thermoelectric element is referred to as an N-type pellet or a P-type pellet.

[0048] When heat is applied to one side of the thermoelectric module 140, creating a temperature difference between the two ends of the N-type and P-type pellets, electrons are generated by the temperature difference, generating electricity; when electricity is passed through the N-type and P-type pellets, a heat flow is generated by the flow of electrons, causing one side to cool and the other side to heat.

[0049] As a result, in the present invention, when the motor operates and heats up to a certain extent, the thermoelectric generation effect is utilized, in which power is generated using the thermoelectric module 140 and then stored in the battery (in this case, the motor heats up to a degree that has almost no effect on the operation of the motor), or when the motor becomes too hot and needs to be cooled, the thermoelectric module is actively used in a cooling mode using the Peltier effect with the electricity stored in the battery to cool the motor. In other words, the power generation mode, in which power is generated using the thermoelectric module 140, and the Peltier mode (cooling mode), in which stored electricity is used for cooling, can be actively utilized by selecting them depending on the situation.

[0050] 3 to 5, an embodiment of a thermoelectric module 140 provided in a motor 100 according to an embodiment of the present invention is disclosed.

[0051] 3, the thermoelectric module 140 of this embodiment may be provided to be inserted into grooves, i.e., slots 121, provided in the housing 120. In addition, in consideration of the fact that a plurality of stator coils 135 are provided inside the housing 120 in a circumferentially repeated manner, the housing 120 may be provided with a plurality of individual slots 121 in a circumferentially repeated manner, and the thermoelectric module 140 may be inserted into each slot 121. That is, a plurality of separated thermoelectric modules 140 may be inserted into the individual slots 121, respectively.

[0052] An example of a thermoelectric module 140 used in this embodiment is disclosed in FIG. 10 or FIG. 11. The thermoelectric module 140 separated into multiple pieces may be a plurality of pieces 140a in which N-type pellets 143 and P-type pellets 144 are repeatedly arranged in a row in the optical axis direction as shown in FIG. 10, or a plurality of pieces 140b in which N-type pellets 143 and P-type pellets 144 are repeatedly arranged in two or more rows in the optical axis direction as shown in FIG. 11.

[0053] The thermoelectric module 140 is mounted on a substrate 141, and includes N-type pellets 143 and P-type pellets 144 alternately arranged in the optical axis direction, and may include connection electrodes 147 that interconnect the N-type pellets 143 and P-type pellets 144 at their sides. The connection electrodes 147 may be arranged alternately on both sides of the N-type pellets 143 and P-type pellets 144, and may have a structure that connects them in series.

[0054] 4, the thermoelectric module 140 of this embodiment may be provided to be inserted into slots 123 provided in the housing 120. The slots 123 may be provided continuously in the circumferential direction. In addition, considering that a plurality of stator coils 135 are provided inside the housing 120 in a repeated manner in the circumferential direction, the thermoelectric module 140 having a structure in which a plurality of N-type pellets 143 and P-type pellets 144 are provided in a repeated manner in the circumferential direction may be inserted into the housing 120.

[0055] 6 and 7, the thermoelectric module 140 is mounted on a substrate 141, has N-type pellets 143 and P-type pellets 144 alternately arranged in the circumferential direction and the optical axis direction, and may include connecting electrodes 147 that interconnect the N-type pellets 143 and P-type pellets 144 at their sides. The connecting electrodes 147 may be arranged alternately on both sides of the N-type pellets 143 and P-type pellets 144, connecting them in series. In this embodiment, the substrate 141 may be a flexible substrate to form a substantially circularly wrapped structure in the circumferential direction.

[0056] 5, the thermoelectric module 140 of this embodiment may be provided in a structure attached to the outer surface of the housing 120. In addition, considering that a plurality of stator coils 135 are provided inside the housing 120 in a circumferentially repeated manner, the thermoelectric module 140 may be inserted into the housing 120 and have a structure in which a plurality of N-type pellets 143 and P-type pellets 144 are provided in a circumferentially repeated manner.

[0057] 6 and 7, the thermoelectric module 140 is mounted on a substrate 141, has N-type pellets 143 and P-type pellets 144 alternately provided in the circumferential direction and the optical axis direction, and may include connecting electrodes 147 that interconnect the N-type pellets 143 and P-type pellets 144 at their sides. The connecting electrodes 147 may be provided alternately on both sides of the N-type pellets 143 and P-type pellets 144, and may have a structure that connects them in series.

[0058] In this embodiment, the substrate 141 can be a flexible substrate to form a structure that is wrapped approximately in a circle in the circumferential direction.

[0059] In addition, since the N-type pellets 143 and the P-type pellets 144 are repeatedly arranged in the circumferential direction and the optical axis direction, the pellets 143 or 144 arranged at the start and end in the circumferential direction or the start and end in the optical axis direction can be connected to adjacent pellets by the connecting electrodes 147 in both the circumferential direction and the optical axis direction.

[0060] 6 to 11, the thermoelectric module 140 may include a substrate 141, at least one pair of N-type pellets 143 and P-type pellets 144 alternately mounted on the substrate 141, and a connecting electrode 147 interconnecting the N-type pellets 143 and P-type pellets 144 at their sides.

[0061] In other words, the bottom surfaces of the N-type pellet 143 and the P-type pellet 144 are mounted on the substrate 141 , and the side surfaces of the N-type pellet 143 and the P-type pellet 144 can be electrically connected to each other by the connection electrode 147 .

[0062] The thermoelectric module 140 can use ceramic or aluminum as the substrate 141, and in this embodiment, a rigid yet flexible material such as an aluminum substrate 141 can be used to easily insert it into the housing 120 of the motor 100 or attach it to the outside, and to ensure durability.

[0063] The thermoelectric module 140 is composed of two poles, an N-type pellet 143 and a P-type pellet 144, and can realize thermoelectric power generation and the Peltier effect, so the thermoelectric module 140 attached to the motor can also be composed of an N-type (such as bismuth tetragonal tetragonal tetragonal hexagonal hexagonal hexagonal) and a P-type (such as bismuth tetragonal hexagonal hexagonal) hexagonal.

[0064] In the thermoelectric module 140 of this embodiment, the connecting electrode 147 may be configured to connect the sides of the N-type pellet 143 and the P-type pellet 144 to each other in order to maximize heat exchange efficiency.

[0065] A first insulating layer 142 made of an insulating material such as AlN or BN can be formed on the upper surface of the substrate 141. Since substrates 141 made of aluminum or the like have high thermal conductivity, it is preferable to use the first insulating layer 142 (for example, in the case of Nitride spraying, a thermal spray method can be used to ensure bonding strength with aluminum or the like).

[0066] Then, an N-type pellet 143 and a P-type pellet 144 can be mounted on the upper surface of the substrate 141 on which the first insulating layer 142 has been formed.

[0067] After the connecting electrode 147 connects the sides of the N-type pellet 143 and the P-type pellet 144 to each other, a second insulating layer 145 can be formed on the outer surfaces of the N-type pellet 143 and the P-type pellet 144 using a varnish material that is used for copper wires to insulate them from the outside.

[0068] The connecting electrode 147 can be printed on the substrate 141 or printed together with the substrate manufactured through a mold, and the N-type pellet 143 and the P-type pellet 144 processed to fit the size of the manufactured connecting electrode 147 can be sandwiched between them, and by providing the connecting electrodes 147 alternately on both sides of the N-type pellet 143 and the P-type pellet 144, an electrode structure in which they are connected to each other in series can be formed.

[0069] After completing the connection of both sides of the N-type pellet 143 and the P-type pellet 144 with the connecting electrode 147, a metal solder joint (not shown) can be formed by applying a metal paste (Sn-Solder) to a gap that may be formed between the connecting electrode 147 and the pellets 143 and 144 for mechanical reinforcement.

[0070] After the N-type pellet 143 and the P-type pellet 144 are mounted on the substrate 141, a process of heat treatment at 200 degrees for 10 to 30 minutes can be added to remove the binder in the paste and ensure stable adhesion between the pellets 143, 144 and the connecting electrode 147.

[0071] In addition, in order to ensure the electrical stability of the pellets 143, 144, i.e., the thermoelectric elements, mounted in the overall completed thermoelectric module 140, a varnish can be applied to the surface to ensure thermal / electrical stability.

[0072] 6 and 7 is mounted on a substrate 141, and includes N-type pellets 143 and P-type pellets 144 alternately arranged in the circumferential direction and the optical axis direction, and may include connecting electrodes 147 that interconnect the N-type pellets 143 and P-type pellets 144 at their sides. The connecting electrodes 147 may be arranged alternately on both sides of the N-type pellets 143 and P-type pellets 144, and may have a structure that connects them in series.

[0073] In addition, since N-type pellets 143 and P-type pellets 144 are repeatedly arranged in the circumferential direction and the optical axis direction, the pellets 143 or 144 arranged at the start and end in the circumferential direction or the start and end in the optical axis direction can be connected to adjacent pellets by connecting electrodes 147 in both the circumferential direction and the optical axis direction.

[0074] In this embodiment, the substrate 141 can be a flexible substrate to form a structure that is wrapped approximately in a circle in the circumferential direction.

[0075] 10 or 11, the thermoelectric module 140 separated into a plurality of pieces may include a plurality of pieces 140a in which N-type pellets 143 and P-type pellets 144 are repeatedly arranged in a row in the optical axis direction as shown in FIG. 10, or a plurality of pieces 140b in which N-type pellets 143 and P-type pellets 144 are repeatedly arranged in two or more rows in the optical axis direction as shown in FIG. 11.

[0076] The thermoelectric module 140 is mounted on a substrate 141, and includes N-type pellets 143 and P-type pellets 144 alternately arranged in the optical axis direction, and may include connection electrodes 147 that interconnect the N-type pellets 143 and P-type pellets 144 at their sides. The connection electrodes 147 may be arranged alternately on both sides of the N-type pellets 143 and P-type pellets 144, and may have a structure that connects them in series.

[0077] In addition, in the case where two or more rows as disclosed in FIG. 11 are repeatedly provided 140b, N-type pellets 143 and P-type pellets 144 are repeatedly provided in the circumferential direction and the optical axis direction, so that the pellets 143 or 144 provided at the start and end in the circumferential direction or the start and end in the optical axis direction can be connected to adjacent pellets by connecting electrodes 147 in both the circumferential direction and the optical axis direction.

[0078] Referring to FIG. 12, a motor temperature control device 200 according to one embodiment of the present invention may include at least some of a sensing unit 210, a thermoelectric module 220 (same as reference numeral 140 in FIGS. 1 to 11), a control unit 230, a storage unit 240, and a battery 250.

[0079] The motor temperature control device 200 of this embodiment is a device that controls the thermoelectric module 220 to select and operate in either a thermoelectric power generation mode or a Peltier mode (cooling mode) depending on the temperature of the housing 120 (same as the motor housing 120 in Figures 1 to 11) sensed by the sensing unit 210.

[0080] Specifically, the motor temperature control device 200 according to one embodiment of the present invention may include, as an example, a sensing unit 210 that senses the temperature of the motor housing 120, a thermoelectric module 220 provided in the housing 120 to cool the motor, and a control unit 230 that controls the operation of the thermoelectric module 220 based on the temperature sensed by the sensing unit 210.

[0081] The control unit 230 may control the thermoelectric module 220 to operate in either a thermoelectric power generation mode or a Peltier mode (cooling mode) depending on the temperature of the housing 120 sensed by the sensing unit 210.

[0082] The motor temperature control device may include a battery, which may be the battery used to drive the motor or a separate battery dedicated to the motor temperature control device.

[0083] The sensing unit may be a thermometer, and may include any device that is provided in any manner to sense the temperature of the housing.

[0084] The storage unit may store information required for operation of the motor temperature control device 200, or may store new information and update or accumulate (over time). For example, a set temperature (e.g., 100°C) that is a boundary for selecting and operating either a thermoelectric power generation mode or a Peltier mode (cooling mode) may be stored, and the temperature of the motor housing sensed by the sensing unit may be continuously updated or accumulated (over time) and stored.

[0085] The temperature sensor may further include a communication unit (including wired or wireless communication) that transmits the temperature of the housing sensed by the sensing unit to the storage unit.

[0086] The control unit is controllably connected to the sensing unit 210, the thermoelectric module 220, the control unit 230, the storage unit 240, and the battery 250, and can receive or transmit electrical or control signals. The control unit can instruct the thermoelectric module 220 to operate in a power generation mode or a cooling mode through information received from the sensing unit 210, the thermoelectric module 220, the control unit 230, the storage unit 240, the battery 250, etc.

[0087] Referring to FIG. 13, a method S200 for controlling the temperature of a motor according to one embodiment of the present invention is disclosed.

[0088] The motor temperature control method S200 of this embodiment may include a sensing step S210 of sensing the temperature of the motor housing of the driving motor, and a control step S220 of comparing the temperature of the housing sensed in the sensing step S210 with a set temperature and selecting and operating the thermoelectric module provided in the housing in either a thermoelectric power generation mode or a Peltier mode (cooling mode).

[0089] The sensing step S210 is a step of measuring the temperature of the housing by a sensing unit 210 (e.g., a temperature sensor such as a physical or electronic thermometer) provided in the housing. The temperature sensed in the sensing step S210 can be transmitted to the storage unit 240 via a wired or wireless communication unit (not shown) in accordance with a command from the control unit.

[0090] The control step S220 can determine whether the temperature sensed in the sensing step S210 is below or above a set temperature (e.g., 100 degrees) and command the thermoelectric element 220 to operate in a power generation mode or a cooling mode.

[0091] In addition, the control step S220 can command the thermoelectric module to operate in thermoelectric power generation mode and store the generated electricity in the battery 250 if the temperature sensed in the sensing step is below the set temperature (S231, S233), and can command the thermoelectric module to operate in Peltier mode (cooling mode) using the electricity stored in the battery if the temperature sensed in the sensing step exceeds the set temperature (S241, S243).

[0092] Meanwhile, the sensing step S210 and the control step S220 of this embodiment can both be performed by commands from the control unit 230.

[0093] The methods according to the present invention may be embodied in the form of program instructions that can be executed by various computer means and stored on a computer-readable medium. The computer-readable medium may include, alone or in combination with program instructions, data files, data structures, and the like. The program instructions stored on the computer-readable medium may be those specially designed and constructed for the purposes of the present invention, or they may be of the type well known and available to those skilled in the art of computer software.

[0094] Examples of computer-readable media include hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include not only machine code, such as produced by a compiler, but also high-level language code that can be executed by a computer using an interpreter, etc. The above-mentioned hardware devices can be configured to operate with at least one software module to perform the operations of the present invention, and vice versa.

[0095] The motor temperature control device 200 of this embodiment may include a storage unit 240. Examples of recording media suitable for storing the motor temperature control method S200 include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as compact disk read only memories (CD-ROMs) and digital video disks (DVDs), magneto-optical media such as floptical disks, flash memories, erasable programmable ROMs (EPROMs), and semiconductor memories such as SSDs fabricated based on these.

[0096] This may be implemented through a non-volatile memory (not shown) configured to store data related to algorithms configured to control the operations of various components or software instructions for reproducing the algorithms, and a processor (not shown) configured to perform the operations described above or below using the data stored in the memory. Here, the memory and the processor may be implemented as separate chips. Alternatively, the memory and the processor may be implemented as a single chip integrated with each other. The processor may take the form of one or more processors.

[0097] The components of the motor temperature control method S200 can transmit and receive information via a wired or wireless communication network. For example, data can be transmitted and received using a network communication means provided in a vehicle, such as Ethernet, Media Oriented Systems Transport (MOST), Flexray, Controller Area Network (CAN), Local Interconnect Network (LIN), Internet, LTE, 5G, Wi-Fi, Bluetooth, Near Field Communication (NFC), Zigbee, Radio Frequency (RF), or Low Frequency (LF).

[0098] 14, 15 and 16 are perspective views showing an example of a mobility device to which a motor according to an embodiment of the present invention is applied.

[0099] Mobility devices V1 and V2 according to an embodiment of the present invention may include at least bodies B1 and B2, driving means W and P provided in the bodies B1 and B2, motors M1, M2, and 100 of this embodiment that are linked to the driving means W and P, and batteries E1 and E2 that provide power to the motors. The motors M1 and M2 installed in the mobility devices V1 and V2 of this embodiment may be the motor 100 described with reference to Figures 1 to 11. As the motor 100 may be the one described with reference to Figures 1 to 11, a detailed description of its structure will be omitted.

[0100] 14, a mobility device V1 in one embodiment may be a vehicle that can move on the ground. The vehicle V1, which is a mobility device, may include at least a body B1, a wheel W that is a driving means provided on the body B1, a motor M1 that operates in conjunction with the driving means W, and a battery E1 that provides power to the motor.

[0101] 15 and 16, the mobility device V2 of one embodiment may be an air mobility device that moves through the air. The air mobility device V2 of one embodiment may include at least a fuselage B2 that is a body, a propellant (e.g., a propeller P) that is a driving means provided on the fuselage B2, a motor M2 that operates in conjunction with the propellant P, and a battery E2 that provides power to the motor.

[0102] Figure 15 shows the position of the propeller P when the air mobility V2 takes off or lands, or hovers at a specific point for turning, and Figure 16 shows the position of the propeller P when the air mobility V2 moves, i.e., runs. In other words, the propeller P, which is the propulsion body of the air mobility V2, can be provided with a structure that allows the direction in which it faces to be tilted, and thus the motor M2 that drives the propeller P can also be tilted.

[0103] In the hover mode shown in Figure 15, the main wing and / or tail tilting propellant P can rotate to be substantially perpendicular to the fuselage B2, and in the flight mode shown in Figure 16, the main wing and / or tail non-tilting propellant P can rotate to be substantially parallel to the fuselage B2. The tilting of the main wing and / or tail tilting propellant P can be synchronized depending on the flight mode, and the tilting of each propellant can be adjusted differently depending on the attitude control and flight situation in the same flight mode.

[0104] Meanwhile, although specific illustrations are omitted, the mobility device may be a device that moves in a space related to the ground, underground, air, space, sea, and / or underwater, depending on the space it moves in. Ground or underground mobility devices may be provided in the form of, for example, a vehicle, a robot, etc., and air or space mobility devices are aerial mobility devices, which may be provided in the form of, for example, a conventional fixed-wing or rotary-wing aircraft, the recently actively developed Advanced Air Mobility (AAM), an unmanned aerial vehicle or drone, a rocket, a satellite-mounted vehicle, etc. Sea or underwater mobility devices may be, for example, a ship, a submarine, etc. Mobility devices are not limited to a specific space and may be a mobile body that can move in all of the above spaces, i.e., a mobile body that can move between multiple spaces, such as an amphibious vehicle or a flying vehicle.

[0105] Although the present invention has been described with reference to the preferred embodiments, those skilled in the art will understand that various modifications and variations can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. [Explanation of symbols]

[0106] 100 motor 110 Stator 120 Housing 130 stator body 135 stator coil 140 Thermoelectric Module 150 rotor 160 Rotor body 170 Magnetic material 180 rotation axis

Claims

1. a stator provided inside the housing and having a plurality of stator coils repeatedly arranged in a circumferential direction; a thermoelectric module provided in the housing for cooling the plurality of stator coils; The thermoelectric module includes a substrate, at least one pair of N-type and P-type pellets alternately mounted on the substrate, and a connecting electrode interconnecting the N-type and P-type pellets at their sides.

2. 2. The motor according to claim 1, further comprising a rotor provided inside the stator, rotatable about a rotation axis, and having a magnetic body that interacts with the stator coil to generate a rotational force.

3. The motor according to claim 1 , wherein an insulating layer is provided on the upper surface of the substrate on which the N-type pellet and the P-type pellet are mounted.

4. The motor according to claim 1 , wherein the N-type pellet and the P-type pellet are covered with an insulating layer except for a portion where the connecting electrode is connected.

5. The motor of claim 1 , wherein a metal solder joint is provided between the N-type pellet and the P-type pellet and the connecting electrode.

6. The motor according to claim 1 , wherein the thermoelectric module includes N-type pellets and P-type pellets alternately mounted on the substrate in the circumferential direction and the optical axis direction.

7. The motor of claim 6 , wherein the connection electrodes are alternately provided on both sides of the N-type pellet and the P-type pellet and are connected in series.

8. the thermoelectric module includes the N-type pellets and the P-type pellets mounted on a plurality of separated substrates, The motor according to claim 1 , wherein the plurality of separated substrates are arranged at regular intervals in the circumferential direction.

9. The motor of claim 1 , wherein the thermoelectric module is inserted into a slot provided in the housing.

10. The motor of claim 1 , wherein the thermoelectric module is attached to an exterior surface of the housing.

11. The motor of claim 10 , wherein the substrate is a flexible substrate.

12. a sensing step of sensing the temperature of the motor housing; a control step of comparing the temperature of the housing sensed in the sensing step with a set temperature and selecting and operating a thermoelectric module provided in the housing in either a thermoelectric generation mode or a Peltier mode (cooling mode).

13. 13. The motor cooling control method according to claim 12, wherein the set temperature is 100 degrees.

14. the control unit operates the thermoelectric module in a thermoelectric power generation mode if the temperature sensed in the sensing step is equal to or lower than the set temperature; 13. The motor cooling control method of claim 12, wherein the thermoelectric module is operated in a Peltier mode (cooling mode) when the temperature sensed in the sensing step exceeds the set temperature.

15. The control unit operates the thermoelectric module in a thermoelectric power generation mode, and the generated electricity is stored in a battery; The motor cooling control method according to claim 14, wherein when the control unit operates the thermoelectric module in a Peltier mode (cooling mode), electricity stored in the battery is used.

16. Body and at least one driving means provided on the body; a battery provided in the body; and a motor according to any one of claims 1 to 11, coupled to the battery and providing driving force to the at least one driving means.

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