Motor, suspension system and vehicle

Abstract

The invention relates to the technical field of motors, in particular to a motor, a suspension system and a vehicle. The motor comprises a first assembly, the first assembly comprises a first magnetic group, the first magnetic group at least comprises a first magnetic part, a second magnetic part and a third magnetic part which are sequentially arranged in the axial direction of the first assembly, and the magnetic flux direction of the second magnetic part is arranged in the first direction; the magnetic flux directions of the first magnetic part and the third magnetic part respectively deviate towards the second magnetic part, so that the magnetic flux direction of the first magnetic group can be changed, the air gap flux density between the rotor and the stator of the motor is increased, the magnetism gathering effect of the air gap flux density is improved, and the thrust of the linear motor can be improved under the condition that the number of the permanent magnets is not changed.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a motor, a suspension system and a vehicle. Background Art

[0002] A linear motor is a transmission device that converts electrical energy directly into mechanical energy for linear motion. It offers significant advantages, including zero transmission chain, no contact, no backlash, high stiffness, and fast response. Permanent magnets are a core component of linear motors, typically used in the stator or mover. They are crucial for improving the performance and efficiency of linear motors. Therefore, optimizing permanent magnets to enhance the performance and efficiency of linear motors is a key research area. Summary of the Invention

[0003] The present application provides a motor, a suspension system and a vehicle, which can improve the magnetic field concentration effect of the linear air gap magnetic density, and thus can achieve an increase in the thrust of the linear motor without changing the amount of permanent magnets used.

[0004] To solve the above problems, the present application provides a motor, comprising:

[0005] A first assembly includes a first magnetic group and a second magnetic group, the first magnetic group;

[0006] The first magnetic group includes at least a first magnetic member, a second magnetic member and a third magnetic member, and the first magnetic member, the second magnetic member and the third magnetic member are sequentially arranged along the axial direction of the first component;

[0007] The magnetic flux direction of the second magnetic component is arranged along the first direction, and the magnetic flux directions of the first magnetic component and the third magnetic component are respectively offset toward the second magnetic component.

[0008] Furthermore, in the motor provided in the present application, the magnetic flux direction of the first magnetic component and the magnetic flux direction of the third magnetic component are symmetrical about the axis of the second magnetic component along the first direction.

[0009] Furthermore, in the motor provided in the present application, the angle between the magnetic flux direction of the first magnetic component and the first direction is greater than 0 and less than 67°; or / and,

[0010] An angle between the magnetic flux direction of the third magnetic component and the first direction is greater than 0 and less than 67°.

[0011] Furthermore, in the motor provided in the present application, the first component also includes a second magnetic group, the first magnetic group and the second magnetic group are alternately arranged in the axial direction, and the first magnetic group and the second magnetic group have the same size in the axial direction.

[0012] Furthermore, in the motor provided in the present application, the second magnetic group includes a fourth magnetic member, a fifth magnetic member, and a sixth magnetic member;

[0013] The magnetic flux directions of the fourth magnetic component, the fifth magnetic component and the sixth magnetic component are all arranged along the second direction, and the second direction is opposite to the first direction.

[0014] Furthermore, in the motor provided in the present application, the first magnetic component, the second magnetic component, the third magnetic component, the fourth magnetic component, the fifth magnetic component and the sixth magnetic component all have the same size along the axial direction.

[0015] Furthermore, in the motor provided in the present application, the first component further includes an iron core component;

[0016] The core assembly is provided with a first protrusion and a second protrusion alternately arranged along the axial direction; the first magnetic group is provided at the end of the first protrusion, and the second magnetic group is provided at the end of the second protrusion.

[0017] Furthermore, in the motor provided in the present application, the motor further includes a second component, and the first component and the second component move relative to each other along the axial direction of the motor;

[0018] The first magnetic group is arranged between the first protrusion and the second component, and the second magnetic group is arranged between the second protrusion and the second component.

[0019] Furthermore, in the motor provided in the present application, the minimum distance between the first magnetic group and the second component is less than or equal to the minimum distance between the first protrusion and the second component; or / and,

[0020] The minimum distance between the second magnetic group and the second component is less than or equal to the minimum distance between the second protrusion and the second component.

[0021] Furthermore, in the motor provided in the present application, the first magnetic group and the second magnetic group both include surface-mounted permanent magnets.

[0022] Furthermore, in the motor provided in the present application, an excitation winding is wound around the first protrusion; or / and,

[0023] An excitation winding is wound on the second protrusion.

[0024] Furthermore, in the motor provided in the present application, the second component includes at least one non-magnetic conductive portion and at least one magnetic conductive portion;

[0025] The non-magnetic conductive portion is connected to the magnetic conductive portion to form a second component.

[0026] Furthermore, in the motor provided in the present application, the second component includes at least one non-magnetic conductive portion and at least two magnetic conductive portions;

[0027] Wherein, both ends of the non-magnetic conductive part are respectively connected to a magnetic conductive part.

[0028] Furthermore, in the motor provided in the present application, the core assembly includes a first core and a second core;

[0029] The first iron core and the second iron core are respectively located on two corresponding sides of the second component.

[0030] Furthermore, in the motor provided in the present application, the first iron core is provided with a first protrusion and a second protrusion.

[0031] Furthermore, in the motor provided in the present application, the ratio of the size of the first magnetic group in the axial direction to the pole pitch of the second core is greater than or equal to a preset first threshold value and less than or equal to a preset second threshold value; or / and,

[0032] A ratio of a size of the second magnetic group in the axial direction to a pole pitch of the second core is greater than or equal to a first threshold and less than or equal to a second threshold.

[0033] Furthermore, in the motor provided in the present application, the second iron core is provided with third protrusions and fourth protrusions alternately arranged along the axial direction, and the third protrusions and the fourth protrusions are both wound with armature windings.

[0034] Furthermore, in the motor provided in the present application, the first component further includes a third magnetic group and a fourth magnetic group;

[0035] The third magnetic group and the fourth magnetic group are alternately arranged between the third protrusion and the fourth protrusion along the axial direction.

[0036] Furthermore, in the motor provided in the present application, the magnetic flux directions of the adjacent third magnetic group and the fourth magnetic group are arranged along the axial direction and are opposite to each other.

[0037] Furthermore, in the motor provided in the present application, the maximum dimension of the first component along the axial direction is smaller than the minimum dimension of the second component along the axial direction.

[0038] Furthermore, in the motor provided in the present application, the first direction is the direction in which the first magnetic group and / or the second magnetic group is directed toward the second component.

[0039] In a second aspect, the present application also provides a suspension system, comprising the motor provided in the first aspect.

[0040] In a third aspect, the present application further provides a vehicle comprising the motor provided in the first aspect and / or the suspension system provided in the second aspect.

[0041] The motor provided in the present application includes a first component, the first component includes a first magnetic group, the first magnetic group includes at least a first magnetic part, a second magnetic part and a third magnetic part arranged in sequence along the axial direction of the first component, the magnetic flux direction of the second magnetic part is arranged along the first direction, and the magnetic flux directions of the first magnetic part and the third magnetic part are respectively offset toward the second magnetic part, thereby changing the magnetic flux direction of the first magnetic group to increase the air gap magnetic density between the rotor and the stator of the motor, and enhance the magnetic concentration effect of the air gap magnetic density, so that the thrust of the linear motor can be increased while the amount of permanent magnets used remains unchanged. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0043] Figure 1 A structural diagram of the linear motor provided for this application;

[0044] Figure 2 A schematic diagram of the partial structure of the first magnetic group provided in this application;

[0045] Figure 3 The relationship between the magnetization angle and the output thrust provided in this application;

[0046] Figure 4 A first relationship diagram of the air gap magnetic field between the first component and the second component provided in this application;

[0047] Figure 5 A second relationship diagram of the air gap magnetic field between the first component and the second component provided in this application;

[0048] Figure 6 A comparison chart of the magnetic focusing effect provided for this application;

[0049] Figure 7 The first magnetic circuit diagram of the linear motor provided in this application;

[0050] Figure 8 This is the second magnetic circuit diagram of the linear motor provided in this application.

[0051] Reference numerals:

[0052] 10. Motor; y, first direction; 100. First component; 110. Permanent magnet component; 111. First magnetic group; 1111. First magnetic member; 1112. Second magnetic member; 1113. Third magnetic member; 112. Second magnetic group; 1121. Fourth magnetic member; 1122. Fifth magnetic member; 1123. Sixth magnetic member; 113. Third magnetic group; 114. Fourth magnetic group; 120. Core component; 121. First core; 1211. First protrusion; 1212. Second protrusion; 122. Second core; 1221. Third protrusion; 1222. Fourth protrusion; 130. Excitation winding; 140. Armature winding; 200. Second component; 201. Magnetic conductive portion; 202. Non-magnetic conductive portion. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0054] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0055] It should also be understood that the terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0056] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0057] In addition, in this application, unless otherwise clearly specified or limited in the embodiments, the terms "installed", "connected", "connected" and "fixed" appearing in the embodiments should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integrated connection. It can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements, or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood based on the specific implementation.

[0058] In the related technology, the Chinese invention patent provides an asymmetric bilateral dual permanent magnet hybrid excitation switching flux linear motor, which includes a long stator and a short rotor; the short rotor includes two parts, primary I and primary II, primary I includes a U-shaped armature core, permanent magnet I and armature winding, primary II includes an excitation core, excitation winding and permanent magnet II, so as to divide the short rotor into two parts, one side is primary I and the other side is primary II, but the two are independent of each other and are located on different sides of the long stator, respectively, which not only realizes the advantages of the flux switching structure, but also effectively avoids the disadvantages of competition between the excitation winding and the armature winding and the permanent magnet in the circuit and magnetic path. At the same time, the magnetic field size can be easily changed by changing the current of the excitation winding, and the air gap magnetic field can be adjusted to achieve hybrid excitation, ensuring the improvement of the weak magnetic constant power operating range and the increase of overload capacity.

[0059] However, the above technical solution only focuses on the disadvantages of the stator split bilateral permanent magnet structure to avoid the competition between the magnetic circuit and the electric circuit, and the advantage of the permanent magnet II on the primary II to improve the thrust density, but does not take into account the segmentation of the permanent magnet II and the change of the magnetic flux direction to further improve the thrust of the linear motor.

[0060] To this end, the present application provides a motor, which includes a first component, the first component includes a first magnetic group, the first magnetic group includes at least a first magnetic part, a second magnetic part and a third magnetic part arranged in sequence along the axial direction of the first component, the magnetic flux direction of the second magnetic part is arranged along the first direction, and the magnetic flux directions of the first magnetic part and the third magnetic part are respectively offset toward the second magnetic part, thereby changing the magnetic flux direction of the first magnetic group to increase the air gap magnetic density between the rotor and the stator of the motor, and enhance the magnetic concentration effect of the air gap magnetic density, so that the thrust of the linear motor can be increased while the amount of permanent magnets used remains unchanged.

[0061] See also Figure 1 and Figure 2 , Figure 1 A second structural diagram of the linear motor provided in this application; Figure 2 This is a schematic diagram of the partial structure of the first magnetic group provided in this application. Figure 1 and Figure 2 As shown, the present application provides a motor 10, comprising:

[0062] The first component 100 includes a first magnetic group 111;

[0063] The first magnetic group 111 includes at least a first magnetic member 1111, a second magnetic member 1112 and a third magnetic member 1113, wherein the first magnetic member 1111, the second magnetic member 1112 and the third magnetic member 1113 are sequentially arranged along the axial direction;

[0064] The magnetic flux direction of the second magnetic member 1112 is arranged along the first direction y, and the magnetic flux directions of the first magnetic member 1111 and the third magnetic member 1113 are respectively offset toward the second magnetic member 1112 .

[0065] In this embodiment, the motor 10 may be a linear motor, the first component 100 may be a mover component of the linear motor, and the first magnetic group 111 and the second magnetic group 112 may be permanent magnet groups in the mover component.

[0066] Specifically, the first component 100 may include multiple first magnetic groups 111, and the multiple first magnetic groups 111 may be arranged along the axial direction of the first component 100. At the same time, the magnetic flux directions of the first magnetic member 1111 and the third magnetic member 1113 in the first magnetic group 111 are respectively offset toward the second magnetic member 1112, and the magnetic flux direction of the second magnetic member 1112 in the first magnetic group 111 is set to the first direction y, and the magnetic flux direction of the second magnetic group 112 is set to the second direction, that is, on the basis of ensuring that the magnetic flux direction of the second magnetic group 112 remains unchanged, the magnetic flux directions of the first magnetic member 1111 and the third magnetic member 1113 in the first magnetic group 111 are changed, which can achieve the magnetic concentration effect of improving the linear air gap magnetic density, and thus can achieve the effect of improving the thrust of the linear motor while keeping the amount of permanent magnets unchanged.

[0067] The first magnetic group 111 can be understood as N-pole magnets, and the second magnetic group 112 can be understood as S-pole magnets. Both the first direction y and the second direction are perpendicular to the axial direction. The axial direction can be understood as the x-direction in a two-dimensional plane, the first direction y can be understood as the y-direction in a two-dimensional plane, and the second direction can be understood as the direction opposite to the y-direction in a two-dimensional plane.

[0068] The motor 10 provided in the present application includes a first component 100, the first component 100 includes a first magnetic group 111, the first magnetic group 111 includes at least a first magnetic part 1111, a second magnetic part 1112 and a third magnetic part 1113 arranged in sequence along the axial direction of the first component 100, the magnetic flux direction of the second magnetic part 1112 is arranged along the first direction y, and the magnetic flux directions of the first magnetic part 1111 and the third magnetic part 1113 are respectively offset toward the second magnetic part 1112, thereby changing the magnetic flux direction of the first magnetic group 111 to increase the air gap magnetic density between the rotor and the stator of the motor 10, and enhance the magnetic concentration effect of the air gap magnetic density, so that the thrust of the linear motor can be increased while the amount of permanent magnets used remains unchanged.

[0069] In some embodiments, as Figure 1 and Figure 2 As shown, the magnetic flux directions of the first magnetic member 1111 and the third magnetic member 1113 are symmetrical about the axis of the second magnetic member 1112 along the first direction y.

[0070] In this embodiment, the first magnetic group 111 is segmented into a first magnetic member 1111, a second magnetic member 1112 and a third magnetic member 1113. The magnetic flux directions of the first magnetic member 1111 and the third magnetic member 1113 deviate from the first direction y and are respectively offset toward the second magnetic member 1112.

[0071] At the same time, in order to ensure that the magnetic flux direction of the first magnetic component 1111 and the magnetic flux direction of the third magnetic component 1113 can achieve the magnetic concentration effect of improving the linear air gap magnetic density after deviating from the first direction y, the magnetic flux direction of the first magnetic component 1111 and the magnetic flux direction of the third magnetic component 1113 can be respectively located on the adjacent two sides of the first direction y, that is, after the magnetic flux directions of the first magnetic component 1111 and the third magnetic component 1113 are vector decomposed along the first direction y and the axial direction, the vectors in the axial direction are all directed towards the second magnetic component 1112.

[0072] It should be noted that the number of the first magnetic member 1111, the second magnetic member 1112, and the third magnetic member 1113 can be one or more, and the specific number can be selected according to actual application and is not specifically limited in this application. Preferably, the number of the first magnetic member 1111 is equal to the number of the third magnetic member 1113.

[0073] In addition, the magnetic flux direction of the first magnetic part 1111 and the magnetic flux direction of the third magnetic part 1113 can be symmetrical on the axis of the magnetic flux direction of the second magnetic part 1112, which can further increase the air gap magnetic density of the linear motor, thereby improving the magnetic concentration effect of the air gap magnetic density, and further improving the thrust of the linear motor while keeping the amount of permanent magnets unchanged.

[0074] The magnetic flux direction between the first magnetic member 1111 and the third magnetic member 1113 may form an inverted V-shaped structure.

[0075] In some embodiments, as Figure 1 and Figure 2 As shown, the angle between the magnetic flux direction of the first magnetic component 1111 and the first direction y is greater than 0 and less than 67°; the angle between the magnetic flux direction of the third magnetic component 1113 and the first direction y is greater than 0 and less than 67°.

[0076] Specifically, such as Figure 3 As shown, in the process of adjusting the magnetizing angle of the first magnetic member 1111 and the magnetizing angle of the third magnetic member 1113 from 0 to 90 degrees, that is, the angle between the magnetic flux direction of the first magnetic member 1111 and the first direction y, and the angle between the magnetic flux direction of the third magnetic member 1113 and the first direction y from 0 to 90°, the thrust of the linear motor first gradually increases. When the magnetizing angle of the first magnetic member 1111 and the magnetizing angle of the third magnetic member 1113 rise to 36 degrees, the thrust of the linear motor reaches a maximum, and then gradually decreases. When the magnetizing angle of the first magnetic member 1111 and the magnetizing angle of the third magnetic member 1113 reach 67°, the thrust of the linear motor is the same as the thrust of the linear motor corresponding to the angle of 0°.

[0077] It can be seen that the angle between the magnetic flux direction of the first magnetic component 1111 provided in this application and the first direction y is greater than 0 and less than 67°, and the angle between the magnetic flux direction of the third magnetic component 1113 and the first direction y is greater than 0 and less than 67°.

[0078] Exemplarily, the angle between the magnetic flux direction of the first magnetic member 1111 and the first direction y, and the angle between the magnetic flux direction of the third magnetic member 1113 and the first direction y can be 10°, 15°, 20°, 30°, 35°, 40°, 45°, 55°, 60° and 65°, etc.

[0079] In some embodiments, as Figure 1 and Figure 2 As shown, the second magnetic member 1112 is disposed between the first magnetic member 1111 and the third magnetic member 1113 .

[0080] In this embodiment, the second magnetic part 1112 can be arranged between the first magnetic part 1111 and the third magnetic part 1113, and the magnetic flux direction between the first magnetic part 1111 and the third magnetic part 1113 can form an inverted V-shaped structure. At the same time, the dimensions along the axial direction between the first magnetic part 1111, the third magnetic part 1113 and the second magnetic part 1112 are the same.

[0081] In some embodiments, the first component 100 further includes a second magnetic group 112 . The first magnetic group 111 and the second magnetic group 112 are alternately arranged along the axial direction, and the first magnetic group 111 and the second magnetic group 112 have the same size along the axial direction of the first component 100 .

[0082] In this embodiment, the first component 100 may include multiple first magnetic groups 111 and multiple second magnetic groups. The multiple first magnetic groups 111 and the multiple second magnetic groups 112 may be alternately arranged along the axial direction of the first component 100. Since the first magnetic groups 111 and the second magnetic groups 112 have different sizes along the axial direction of the first component 100, this may significantly affect the performance of the linear motor. In addition, when the width of the permanent magnets changes, the performance parameters of the linear motor will also change accordingly.

[0083] Therefore, the present application arranges the first magnetic group 111 and the second magnetic group 112 with the same size along the axial direction of the first component 100 to ensure the symmetry of the magnetic flux path, thereby improving the operating efficiency and stability of the linear motor.

[0084] In some embodiments, as Figure 1 As shown, the second magnetic group 112 includes a fourth magnetic member 1121, a fifth magnetic member 1122 and a sixth magnetic member 1123; wherein the magnetic flux directions of the fourth magnetic member 1121, the fifth magnetic member 1122 and the sixth magnetic member 1123 are all arranged along the second direction, which is opposite to the first direction y.

[0085] In this embodiment, the first magnetic group 111 and the second magnetic group 112 can be segmented. The first magnetic member 1111, the second magnetic member 1112, and the third magnetic member 1113 can be understood as N-pole magnetic steel, and the fourth magnetic member 1121, the fifth magnetic member 1122, and the sixth magnetic member 1123 can be understood as S-pole magnetic steel. The first direction y and the second direction are both perpendicular to the axial direction. The axial direction can be understood as the x-direction in a two-dimensional plane, the first direction y can be understood as the y-direction in a two-dimensional plane, and the second direction can be understood as the direction opposite to the y-direction in the two-dimensional plane.

[0086] In some embodiments, as Figure 1 As shown, the first component 100 also includes an iron core component 120; wherein the iron core component 120 is provided with a first protrusion 1211 and a second protrusion 1212 alternately arranged along the axial direction; the first magnetic group 111 is provided at the end of the first protrusion 1211, and the second magnetic group 112 is provided at the end of the second protrusion 1212.

[0087] In this embodiment, the core assembly can be understood as a component of the mover core. The core assembly 120 is provided with a first protrusion 1211 and a second protrusion 1212 to form a tooth-like structure. This can improve the magnetic flux and uniformity of the linear motor, reduce losses in the linear motor, and improve the efficiency of the linear motor. It can also provide targeted cooling for the teeth and coil windings of the core assembly 120 to control temperature rise, thereby ensuring the reliability and operational stability of the linear motor. Furthermore, the tooth-like structure can increase the mechanical strength and stability of the first assembly 100, reduce vibration and braking torque, and thus improve the overall performance of the linear motor.

[0088] Specifically, the first magnetic group 111 can be embedded in the core assembly 120 at the end of the first protrusion 1211, or it can be attached to the core assembly 120 at the end of the first protrusion 1211. The second magnetic group 112 can be embedded in the core assembly 120 at the end of the second protrusion 1212, or it can be attached to the core assembly 120 at the end of the second protrusion 1212.

[0089] Among them, the first magnetic group 111 is attached to the core assembly 120 at the end of the first protrusion 1211, and the second magnetic group 112 is attached to the core assembly 120 at the end of the second protrusion 1212, which can further increase the air gap magnetic density between the mover and stator of the motor, enhance the magnetic concentration effect of the air gap magnetic density, and further achieve the improvement of the thrust of the linear motor while keeping the amount of permanent magnets unchanged.

[0090] In some embodiments, as Figure 1 As shown, the motor 10 also includes a second component 200, and the first component 100 and the second component 200 move relative to each other along the axial direction of the motor 10; wherein, the first magnetic group 111 is arranged between the first protrusion 1211 and the second component 200, and the second magnetic group 112 is arranged between the second protrusion 1212 and the second component 200.

[0091] In this embodiment, the first component 100 can be understood as a movable component, and the second component 200 can be understood as a stator component, so that the first component 100 and the second component 200 move relative to each other along the axial direction of the motor 10 in which they are located.

[0092] Among them, after the first magnetic group 111 is arranged between the first protrusion 1211 and the second component 200, and the second magnetic group 112 is arranged between the second protrusion 1212 and the second component 200, the first magnetic group 111 and the second magnetic group 112 can generate a constant magnetic field and interact with the magnetic field on the second component 200, thereby driving the linear motor to operate.

[0093] At the same time, the first magnetic group 111 is arranged between the first protrusion 1211 and the second component 200, and the second magnetic group 112 is arranged between the second protrusion 1212 and the second component 200, which can enhance the magnetic flux density and magnetomotive force of the linear motor and improve the efficiency and performance of the linear motor.

[0094] In some embodiments, the minimum distance between the first magnetic group 111 and the second component 200 is less than or equal to the minimum distance between the first protrusion 1211 and the second component 200; the minimum distance between the second magnetic group 112 and the second component 200 is less than or equal to the minimum distance between the second protrusion 1212 and the second component 200.

[0095] In this embodiment, the first magnetic group 111 and the second magnetic group 112 are arranged between the second component 200 and the core component 120. At the same time, the first magnetic group 11 and the second magnetic group 112 can be embedded at the ends of the first protrusion 1211 and the second protrusion 1212, respectively, to form embedded permanent magnets; or they can be attached at the ends of the first protrusion 1211 and the second protrusion 1212, respectively, to form surface-mounted permanent magnets.

[0096] Specifically, the surface-mounted permanent magnet is a permanent magnet that is directly attached to form a protrusion or groove to accommodate the permanent magnet. It has a simple structure, is easy to manufacture and maintain, and is on the surface of the core assembly 120, so the cost is low. At the same time, the air gap magnetic field of the surface-mounted permanent magnet is uniform, and the magnetic density waveform is close to a sine wave, which is beneficial to reducing magnetic field harmonics; the embedded permanent magnet is a permanent magnet embedded in the core assembly 120. It has a complex structure but high safety and can withstand large centrifugal forces. However, the air gap width of the embedded permanent magnet is uneven, and the air gap in the area covered by the permanent magnet is larger, and the air gap in the uncovered area is smaller.

[0097] In some embodiments, the first magnetic group 111 and the second magnetic group 112 both include surface-mounted permanent magnets.

[0098] Specifically, such as Figure 7 As shown, after the first magnetic group 111 and the second magnetic group 112 provided in the present application are embedded in the core component 120, magnetic leakage will occur, that is, more magnetic flux does not pass through the air gap between the core component 120 and the second component 200, but directly passes through the core component 120 at both ends of the magnetic steel, resulting in a large amount of magnetic leakage.

[0099] like Figure 8As shown, after the first magnetic group 111 and the second magnetic group 112 use surface-mounted permanent magnets, the tooth boots at both ends of the first magnetic component 1111 and the third magnetic component 1113 are removed, which can reduce leakage magnetic field, thereby further improving the air gap magnetic field between the core component 120 and the second component 200, and improving the magnetic concentration effect of the air gap magnetic density, thereby achieving the effect of improving the thrust of the linear motor without changing the amount of permanent magnets.

[0100] In some embodiments, an excitation winding 130 is wound around the first protrusion 1211 , and an excitation winding 130 is wound around the second protrusion 1212 .

[0101] In this embodiment, the core assembly 120 is provided with a first protrusion 1211 and a second protrusion 1212 to form a tooth-like structure. The excitation winding 130 can be wound around each of the first and second protrusions 1211, 1212. The excitation winding 130 can be sleeved over the first and second protrusions 1211, 1212 to form multiple excitation poles. Adjacent excitation poles have opposite polarities, and the polarity and magnetic field strength of the excitation poles can be varied by changing the polarity and magnitude of the excitation current. Furthermore, the excitation winding 130 can be connected to a DC power supply via slip rings and brushes to provide the necessary magnetic field for the linear motor.

[0102] In some embodiments, as Figure 1 As shown, the second component 200 includes at least one non-magnetic conductive portion 202 and at least one magnetic conductive portion 201 ; wherein the non-magnetic conductive portion 202 is connected to the magnetic conductive portion 201 to form the second component 200 .

[0103] In this embodiment, the second component 200 can be a stator core, which can adopt a separated structure to effectively alleviate the spatial competition between the permanent magnet and the armature winding 140, thereby reducing the magnetic saturation phenomenon. Moreover, since the separated structure of the second component 200 expands the space of the armature winding 140, the output capacity of the motor 10 can be improved by increasing the number of winding turns.

[0104] The separated second assembly 200 also helps improve the heat dissipation capacity of the motor 10, thereby enhancing overall performance. Furthermore, the separated second assembly 200 allows the required second assembly 200 core to be processed simultaneously using the same mold, which not only improves material utilization but also reduces product costs.

[0105] Furthermore, in some embodiments, Figure 1 As shown, the second component 200 includes at least one non-magnetic conductive portion 202 and at least two magnetic conductive portions 201 ; wherein, two ends of the non-magnetic conductive portion 202 are connected to one or two magnetic conductive portions 201 respectively.

[0106] Specifically, two adjacent magnetic adjustment magnet blocks are connected by injecting non-magnetic material or fixing them with long bolts to form an integral second component 200 structure, thereby ensuring the integrity and stability of the second component 200.

[0107] In some embodiments, as Figure 1 As shown, the core assembly 120 includes a first core 121 and a second core 122 ; wherein the first core 121 and the second core 122 are respectively located on two corresponding sides of the second assembly 200 .

[0108] In this embodiment, the first iron core 121 and the second iron core 122 are respectively located on the corresponding two sides of the second component 200, so that the area of the corresponding electromagnetic slot and the armature slot can be increased. At the same time, both short movers contain permanent magnets, which can greatly increase the thrust density and magnetic field adjustment range of the motor 10. The size of the magnetic field can be changed by changing the excitation current.

[0109] In some embodiments, as Figure 1 As shown, the first core 121 is provided with a first protrusion 1211 and a second protrusion 1212 .

[0110] In this embodiment, the first protrusion 1211 and the second protrusion 1212 are arranged on the first iron core 121, and the first protrusion 1211 and the second protrusion 1212 can be wound with an excitation winding 130, the second iron core 122 can be wound with an armature winding 140, and the first magnetic group 111 and the second magnetic group 112 can be arranged between the first iron core 121 and the second component 200.

[0111] In some embodiments, as Figure 1 As shown, the ratio of the size of the first magnetic group 111 along the axial direction to the pole pitch of the second iron core 122 is greater than or equal to the first threshold and less than or equal to the second threshold; the ratio of the size of the second magnetic group 112 along the axial direction to the pole pitch of the corresponding mover of the second iron core 122 is greater than or equal to the first threshold and less than or equal to the second threshold.

[0112] In this embodiment, the first component 100 may include a first iron core 121 , a second iron core 122 , a first magnetic group 111 , a second magnetic group 112 , and an excitation winding 130 .

[0113] The pole pitch refers to the distance between like-named magnetic poles in a motor, typically measured in millimeters. The pole pitch of the second core 122 mentioned herein can be understood as the distance between the north and south poles of adjacent permanent magnets at the second core 122. Adjacent permanent magnets at the second core 122 can be understood as the distance between the north and south poles of adjacent third and fourth magnetic groups 113, 114, as mentioned herein.

[0114] The size of the first magnetic group 111 along the axial direction can be understood as the size of the first protrusion 1211 along the axial direction, and the size of the second magnetic group 112 along the axial direction can be understood as the size of the second protrusion 1212 along the axial direction.

[0115] like Figure 6 As shown, the pole pitch of the second core 122, the dimensions of the first magnetic group 111 and the second magnetic group 112 in the axial direction affect the air gap flux density between the first core 121 and the second assembly 200. Figure 6 In the equation ( β ), β is the ratio of the dimension of the first magnetic group 111 in the axial direction to the pole pitch of the second core 122 .

[0116] When the angle between the magnetic flux direction of the first magnetic member 1111 and the first direction y and the angle between the magnetic flux direction of the third magnetic member 1113 and the first direction y are both 45°, the average thrust of the linear motor is lower than that of the corresponding linear motor magnetized in the first direction y. When the axial dimension of the first magnetic group 111 reaches a certain length, that is, 0.5 < β < 1, the thrust and thrust density of the linear motor can be improved. The first threshold value can be 0.5, and the second threshold value can be 1.

[0117] In some embodiments, as Figure 1 As shown, the second core 122 is wound with an armature winding 140 .

[0118] Specifically, the armature winding 140 is the core component for realizing electromechanical energy conversion in the linear motor. It is usually composed of multiple coils connected according to a certain rule. The armature winding 140 is an indispensable key component in the linear motor. Its design and manufacturing quality directly affect the overall performance and reliability of the linear motor.

[0119] In this embodiment, the armature winding 140 can adopt an end non-overlapping concentrated winding, which has fewer current harmonics and smaller phase mutual inductance, thereby improving the fault tolerance of the motor 10. It can not only significantly reduce the torque fluctuation of the linear motor, but also improve the mechanical strength of the winding, and through the contact between the end winding and the surface of the magnetic core, better heat dissipation performance is achieved, thereby improving the overall performance and reliability of the linear motor.

[0120] In some embodiments, as Figure 1 As shown, the second core 122 is provided with third protrusions 1221 and fourth protrusions 1222 alternately arranged along the axial direction, and the armature windings 140 are wound around the third protrusions 1221 and the fourth protrusions 1222 .

[0121] In this embodiment, the second core 122 may be provided with a plurality of third protrusions 1221 and fourth protrusions 1222 alternately arranged along the axial direction to form a tooth-like structure. The armature winding 140 utilizes a concentrated winding with non-overlapping ends and may be wound in the form of coils around the third protrusions 1221 and the fourth protrusions 1222. The third protrusions 1221 and the fourth protrusions 1222 may both face the second magnetic group 112.

[0122] In some embodiments, as Figure 1 As shown, the first component 100 further includes a third magnetic group 113 and a fourth magnetic group 114 ; wherein the third magnetic group 113 and the fourth magnetic group 114 are alternately arranged between the third protrusion 1221 and the fourth protrusion 1222 along the axial direction.

[0123] In this embodiment, the second core 122 is provided with a plurality of armature slots, and the armature winding 140 can be wound on the third protrusion 1221 and the fourth protrusion 1222 in the armature slots. At the same time, an open gap is provided between adjacent third protrusions 1221 and fourth protrusions 1222 to form a second core assembly 122 that can be composed of multiple U-shaped cores, and the third magnetic group 113 and the fourth magnetic group 114 can be alternately arranged in the gap.

[0124] In some embodiments, as Figure 1 As shown, the adjacent third magnetic group 113 and the adjacent fourth magnetic group 114 are respectively disposed between two adjacent groups of third protrusions 1221 and fourth protrusions 1222 .

[0125] In this embodiment, the two adjacent groups of third protrusions 1221 and fourth protrusions 1222 are each provided with a gap opening toward the second component 200, the third magnetic group 113 can be provided in the gap between one group of third protrusions 1221 and the fourth protrusions 1222, and the fourth magnetic group 114 adjacent to the third magnetic group 113 can be provided in the gap between the other group of third protrusions 1221 and the fourth protrusions 1222.

[0126] Among them, the armature winding 140 adopts an end non-overlapping concentrated winding, which can be wound on the third protrusion 1221 and the fourth protrusion 1222 in the form of a coil. A fault-tolerant tooth is provided in the middle of the armature slot of the second iron core 122 to form a plurality of third protrusions 1221 and fourth protrusions 1222 arranged in the axial direction, thereby enabling electromagnetic isolation between two adjacent armature windings 140.

[0127] In some embodiments, as Figure 1 As shown, the magnetic flux directions of the adjacent third magnetic group 113 and fourth magnetic group 114 are opposite.

[0128] In this embodiment, the magnetic flux directions of the adjacent third magnetic group 113 and the fourth magnetic group 114 are opposite to each other, thereby forming an N-pole permanent magnet and an S-pole permanent magnet. The magnetic flux directions of the adjacent third magnetic group 113 and the fourth magnetic group 114 are opposite to each other and can both be parallel to the axial direction of the first component 100.

[0129] The motor 10 provided in the present application includes a first component 100 and a second component 200. The first component 100 includes a first magnetic group 111 and a second magnetic group 112 alternately arranged along the axial direction of the first component 100, a third magnetic group 113 and a fourth magnetic group 114 alternately arranged along the axial direction of the first component 100, and a first iron core 121 and a second iron core 122. The first magnetic group 111, the second magnetic group 112, the third magnetic group 113 and the fourth magnetic group 114 form the permanent magnet component 110 of the motor. The second component 200 can be understood as a stator core. The first iron core 121, the first magnetic group 111 and the second magnetic group 112 in the first component 100 are arranged on one side of the second component 200, and the second iron core 122, the third magnetic group 113 and the fourth magnetic group 114 in the first component 100 are arranged on the other side of the second component 200 to form a linear motor.

[0130] Specifically, such as Figure 4 and Figure 5 As shown, the gap between the first core 121 and the second component 200 can be air gap I, and the gap between the second core 122 and the second component 200 can be air gap II. When the magnetic flux directions of the first magnetic member 1111 and the third magnetic member 1113 are respectively offset by 45° toward the second magnetic member 1112, that is, the angle between the magnetic flux direction of the first magnetic member 1111 and the first direction y and the angle between the magnetic flux direction of the third magnetic member 1113 and the first direction y are both 45°, it can be achieved that the air gap magnetic field strength in the air gap I can be effectively improved without affecting the air gap II, thereby effectively improving the thrust and thrust density of the linear motor.

[0131] In some embodiments, as Figure 1 As shown, the maximum dimension of the first component 100 along the axial direction is smaller than the maximum dimension of the second component 200 along the axial direction.

[0132] In this embodiment, the maximum dimension of the first component 100 along the axial direction can be understood as the length of the mover of the linear motor, and the maximum dimension of the second component 200 along the axial direction can be understood as the length of the stator of the linear motor.

[0133] Specifically, the linear motor can adopt a long stator and short rotor structure, that is, the axial size of the first component 100 is smaller than the axial size of the second component 200. The axial sizes of the first core 121 and the second core 122 can be the same or different.

[0134] In some embodiments, the present application further provides a suspension system, including the motor 10 provided by the present application, wherein the motor 10 may be a linear motor.

[0135] In some embodiments, the present application further provides a vehicle, including the motor 10 provided in the present application, or the suspension system provided in the present application, wherein the motor 10 may be a linear motor, which may be applied to the suspension system of the vehicle.

[0136] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0137] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0138] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0139] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. Although the descriptions of each embodiment in the embodiments of the present application have different focuses, for parts that are not described in detail in a certain embodiment, please refer to the relevant embodiments of other embodiments. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A motor (10), characterized in that: include: A first component (100) includes a first magnetic group (111); The first magnetic group (111) comprises at least a first magnetic member (1111), a second magnetic member (1112), and a third magnetic member (1113), wherein the first magnetic member (1111), the second magnetic member (1112), and the third magnetic member (1113) are sequentially arranged along the axial direction of the first component (100); The magnetic flux direction of the second magnetic member (1112) is arranged along the first direction (y), and the magnetic flux directions of the first magnetic member (1111) and the third magnetic member (1113) are respectively offset toward the second magnetic member (1112).

2. The electric motor (10) according to claim 1, characterized in that The magnetic flux direction of the first magnetic member (1111) and the magnetic flux direction of the third magnetic member (1113) are symmetrical about the axis of the second magnetic member (1112) along the first direction (y).

3. The electric motor (10) according to claim 2, characterized in that The angle between the magnetic flux direction of the first magnetic member (1111) and the first direction (y) is greater than 0 and less than 67°; or / and, The angle between the magnetic flux direction of the third magnetic component (1113) and the first direction (y) is greater than 0 and less than 67°.

4. The electric motor (10) according to claim 1, characterized in that The first component (100) further includes a second magnetic group (112), the first magnetic group (111) and the second magnetic group (112) are alternately arranged along the axial direction, and the first magnetic group (111) and the second magnetic group (112) have the same size along the axial direction.

5. The electric motor (10) according to claim 4, characterized in that The second magnetic group (112) includes a fourth magnetic member (1121), a fifth magnetic member (1122) and a sixth magnetic member (1123); The magnetic flux directions of the fourth magnetic component (1121), the fifth magnetic component (1122) and the sixth magnetic component (1123) are all arranged along a second direction, and the second direction is opposite to the first direction (y).

6. The electric motor (10) according to claim 5, characterized in that The first magnetic member (1111), the second magnetic member (1112), the third magnetic member (1113), the fourth magnetic member (1121), the fifth magnetic member (1122) and the sixth magnetic member (1123) all have the same size along the axial direction.

7. The electric motor (10) according to claim 4, characterized in that The first assembly (100) further includes an iron core assembly (120); The core assembly (120) is provided with a first protrusion (1211) and a second protrusion (1212) alternately arranged along the axial direction; the first magnetic group (111) is provided at an end of the first protrusion (1211), and the second magnetic group (112) is provided at an end of the second protrusion (1212).

8. The electric motor (10) according to claim 7, characterized in that The motor (10) further comprises a second component (200), wherein the first component (100) and the second component (200) move relative to each other along the axial direction of the motor (10); The first magnetic group (111) is arranged between the first protrusion (1211) and the second component (200), and the second magnetic group (112) is arranged between the second protrusion (1212) and the second component (200).

9. The electric motor (10) according to claim 8, characterized in that The minimum distance between the first magnetic group (111) and the second component (200) is less than or equal to the minimum distance between the first protrusion (1211) and the second component (200); or / and, The minimum distance between the second magnetic group (112) and the second component (200) is less than or equal to the minimum distance between the second protrusion (1212) and the second component (200).

10. The electric motor (10) according to claim 9, characterized in that The first magnetic group (111) and the second magnetic group (112) both include surface-mounted permanent magnets.

11. The electric motor (10) according to claim 7, characterized in that An excitation winding (130) is wound around the first protrusion (1211); or / and, An excitation winding (130) is wound around the second protrusion (1212).

12. The electric motor (10) according to claim 8, characterized in that The second component (200) includes at least one non-magnetic conductive portion (202) and at least one magnetic conductive portion (201); The non-magnetic conductive portion (202) is connected to the magnetic conductive portion (201) to form the second component (200).

13. The electric machine (10) according to claim 12, characterized in that The second component (200) comprises at least one non-magnetic conductive portion (202) and at least two magnetic conductive portions (201); Wherein, both ends of the non-magnetic conductive portion (202) are respectively connected to one magnetic conductive portion (201).

14. The electric motor (10) according to claim 7, characterized in that The core assembly (120) includes a first core (121) and a second core (122); The first iron core (121) and the second iron core (122) are respectively located on two corresponding sides of the second component (200).

15. The electric machine (10) according to claim 14, characterized in that The first iron core (121) is provided with the first protrusion (1211) and the second protrusion (1212).

16. The electric machine (10) according to claim 14, characterized in that The ratio of the size of the first magnetic group (111) along the axial direction to the pole pitch of the second core (122) is greater than or equal to a preset first threshold value and less than or equal to a preset second threshold value; or / and, The ratio of the size of the second magnetic group (112) along the axial direction to the pole pitch of the second core (122) is greater than or equal to the first threshold and less than or equal to the second threshold.

17. The electric machine (10) according to claim 14, characterized in that The second iron core (122) is provided with a third protrusion (1221) and a fourth protrusion (1222) alternately arranged along the axial direction, and the armature winding (140) is wound around both the third protrusion (1221) and the fourth protrusion (1222).

18. The electric machine (10) according to claim 17, characterized in that The first assembly (100) further includes a third magnetic group (113) and a fourth magnetic group (114); The third magnetic group (113) and the fourth magnetic group (114) are alternately arranged between the third protrusion (1221) and the fourth protrusion (1222) along the axial direction.

19. The electric machine (10) according to claim 18, characterized in that The magnetic flux directions of the adjacent third magnetic group (113) and the fourth magnetic group (114) are arranged along the axial direction and are opposite to each other.

20. The electric machine (10) according to claim 8, characterized in that The maximum dimension of the first component (100) along the axial direction is smaller than the minimum dimension of the second component (200) along the axial direction.

21. The electric machine (10) according to claim 8, characterized in that The first direction (y) is the direction in which the first magnetic group (111) or / and the second magnetic group (112) are directed toward the second component (200).

22. A suspension system, characterized in that: The invention comprises the motor (10) according to any one of claims 1 to 21.

23. A vehicle, characterized in that: The invention comprises the motor (10) according to any one of claims 1 to 21, and / or the suspension system according to claim 22.

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