An electric machine

Abstract

The application discloses a motor, comprising: a first sub-motor, the first sub-motor is provided with a plurality of first stator teeth; a second sub-motor, the second sub-motor is provided with a plurality of second stator teeth; a plurality of groups of energizing parts; when the first stator teeth corresponding to each coil in each group of energizing parts and the second stator teeth are symmetrically arranged, the same rotating direction of the first sub-motor and the second sub-motor is realized; or when one coil in each group of energizing parts constitutes a fixed coil, two coils except the fixed coil in each group of energizing parts constitute adjustment coils, and the first stator teeth corresponding to each coil in the adjustment coils and the second stator teeth are misaligned, the opposite rotating direction of the first sub-motor and the second sub-motor is realized. Through adjusting the positional relationship between the first stator teeth corresponding to each coil and the second stator teeth, the same or opposite rotating direction of the first sub-motor and the second sub-motor is realized.

Description

Technical Field

[0001] This application relates to the field of power equipment technology, and more particularly to an electric motor. Background Technology

[0002] In some current applications, if a motor needs to have two load shaft extensions and be able to rotate simultaneously in two different directions, it requires two independent motors and two matching drivers, or a single motor with dual shaft extensions. However, the motor structures involved in these technologies have the following technical problems:

[0003] 1) Two sets of lead wires must be left after the motor is wound in order to achieve bidirectional rotation of the motor load shaft;

[0004] 2) Two sets of wiring are required at the winding ends, which involves more steps;

[0005] 3) Two drivers are needed to drive the motor to achieve rotation in two directions. It cannot be guaranteed that the two shafts will rotate at the same speed when rotating in opposite directions. Summary of the Invention

[0006] This application aims to at least partially solve one of the technical problems in the related art. Therefore, one objective of this application is to provide an electric motor.

[0007] To address the aforementioned technical problems, embodiments of this application provide the following technical solutions:

[0008] An electric motor, comprising:

[0009] The first sub-motor includes a first stator core; the first stator core is provided with a plurality of first stator teeth;

[0010] The second sub-motor includes a second stator core, and the second stator core is provided with a plurality of second stator teeth;

[0011] Multiple sets of energized parts, each set of energized parts including a first coil, a second coil and a third coil of different phases; each coil in each set of energized parts is wound around the outside of a first stator tooth and a second stator tooth respectively;

[0012] When the first stator teeth and second stator teeth corresponding to each coil in each group of the energized parts are symmetrically arranged, it is used to ensure that the first sub-motor and the second sub-motor rotate in the same direction; or

[0013] When one coil in each group of energized parts constitutes a fixed coil, and the two coils in each group of energized parts other than the fixed coil constitute an adjusting coil, and the first stator tooth and the second stator tooth corresponding to each coil in the adjusting coil are misaligned, and the first stator tooth and the second stator tooth corresponding to the fixed coil are symmetrically arranged, it is used to realize that the rotation directions of the first sub-motor and the second sub-motor are opposite.

[0014] Optionally, each of the first coils includes a first winding and a second winding connected together; each of the second coils includes a third winding and a fourth winding connected together; and each of the third coils includes a fifth winding and a sixth winding connected together.

[0015] Optionally, the fixed coil includes one of the first coil, the second coil, and the third coil;

[0016] If the fixed coil includes the first coil, then the adjusting coil includes the second coil and the third coil; or

[0017] If the fixed coil includes the second coil, then the adjusting coil includes the first coil and the third coil; or

[0018] If the fixed coil includes the third coil, then the adjusting coil includes the first coil and the second coil.

[0019] Optionally, the first stator core and the second stator core are arranged symmetrically;

[0020] The first stator core includes N first stator teeth;

[0021] The second stator core includes N second stator teeth;

[0022] The Mth first stator tooth and the Mth second stator tooth are symmetrically arranged;

[0023] Where N is an integer multiple of 3; 1≤M≤N, and M is an integer.

[0024] Optionally, the first coil in each group of energized parts is wound around the outside of the Mth first stator tooth and the Mth second stator tooth that are symmetrically arranged; where M is a positive integer;

[0025] The second coil in each group of energized parts is wound around the outside of the (M+1)th first stator tooth and the (M+1)th second stator tooth, which are symmetrically arranged.

[0026] The third coil in each group of the energized parts is wound around the outside of the symmetrically arranged M+2th first stator tooth and M+2th second stator tooth;

[0027] This is used to ensure that the first sub-motor and the second sub-motor rotate in the same direction.

[0028] Optionally, the first coil in each group of energized parts is wound around the outside of the (M+2)th first stator tooth and the (M+2)th second stator tooth, which are symmetrically arranged; where M is a positive integer.

[0029] The second coil in each group of energized parts is wound around the outside of the (M+1)th first stator tooth and the (M+1)th second stator tooth, which are symmetrically arranged.

[0030] The third coil in each group of the energized parts is wound around the outside of the Mth first stator tooth and the Mth second stator tooth, which are symmetrically arranged.

[0031] This is used to ensure that the first sub-motor and the second sub-motor rotate in the same direction.

[0032] Optionally, if the fixed coil of each group of energized parts includes the first coil, then the adjusting coil of each group of energized parts includes the second coil and the third coil;

[0033] Wherein, the first coil is wound around the outside of the Mth first stator tooth and the Mth second stator tooth, which are symmetrically arranged; where M is a positive integer;

[0034] The second coil is wound around the outside of the (M+1)th first stator tooth and the (M+2)th second stator tooth, which are misaligned.

[0035] The third coil is wound around the outside of the misaligned M+2th first stator tooth and the M+1th second stator tooth;

[0036] This is used to make the first sub-motor and the second sub-motor rotate in opposite directions.

[0037] Optionally, the first winding of each group of energized parts is wound around the outside of the Mth first stator tooth; the second winding of each group of energized parts is wound around the outside of the Mth second stator tooth;

[0038] The third winding of each group of energized parts is wound around the outside of the (M+1)th first stator tooth; the fourth winding of each group of energized parts is wound around the outside of the (M+2)th second stator tooth;

[0039] The fifth winding of each group of energized parts is wound around the outside of the M+2th first stator tooth; the sixth winding of each group of energized parts is wound around the outside of the M+1th second stator tooth;

[0040] This is used to make the first sub-motor and the second sub-motor rotate in opposite directions.

[0041] Optionally, if the fixed coil of each group of energized parts includes the first coil, then the adjusting coil of each group of energized parts includes the second coil and the third coil;

[0042] Wherein, the first coil is wound around the outside of the Mth first stator tooth and the Mth second stator tooth, which are symmetrically arranged; where M is a positive integer;

[0043] The second coil is wound around the outside of the misaligned M+2th first stator tooth and the M+1th second stator tooth;

[0044] The third coil is wound around the outside of the misaligned M+1th first stator tooth and the M+2th second stator tooth;

[0045] This is used to make the first sub-motor and the second sub-motor rotate in opposite directions.

[0046] Optionally, the first winding of each group of energized parts is wound around the outside of the Mth first stator tooth; the second winding of each group of energized parts is wound around the outside of the Mth second stator tooth;

[0047] The third winding of each group of energized parts is wound around the outside of the M+2th first stator tooth; the fourth winding of each group of energized parts is wound around the outside of the M+1th second stator tooth;

[0048] The fifth winding of each group of energized parts is wound around the outside of the (M+1)th first stator tooth; the sixth winding of each group of energized parts is wound around the outside of the (M+2)th second stator tooth;

[0049] This is used to make the first sub-motor and the second sub-motor rotate in opposite directions.

[0050] Optionally, the first stator core has N first stator slots, and a first stator tooth is provided between every two first stator slots; the first stator slots are used to provide a first wire passage.

[0051] The second stator core has N second stator slots, and a second stator tooth is provided between every two second stator slots; the second stator slots are used to provide a second wire passage.

[0052] Optionally, the two first ends of the first winding and the two second ends of the second winding are connected on the same side;

[0053] The two third ends of the third winding and the two fourth ends of the fourth winding are connected on the same side, respectively.

[0054] The two fifth ends of the fifth winding and the two sixth ends of the sixth winding are connected on the same side.

[0055] The embodiments of this application have the following technical effects:

[0056] The above-mentioned technical solution of this application, 1) when each coil in each group of energized parts is wound on the outside of the symmetrically arranged first stator teeth and second stator teeth, the first sub-motor and the second sub-motor can rotate at the same speed and in the same direction at the same time; in addition, the ends of the two windings corresponding to each coil are connected on the same side to prevent the two sides of each coil from crossing.

[0057] 2) When each coil of the adjusting coil is wound around the outside of the staggered first stator teeth and the second stator teeth, and the fixed coil is wound around the outside of the symmetrically arranged first stator teeth and the second stator teeth, the first sub-motor and the second sub-motor can rotate at the same speed but in opposite directions. For example, the first sub-motor and the second sub-motor can rotate at the same speed, with the first sub-motor rotating counterclockwise and the second sub-motor rotating clockwise; or the first sub-motor can rotate clockwise and the second sub-motor can rotate counterclockwise. In addition, the ends of the two windings corresponding to each coil of the adjusting coil are connected on the same side, and the ends of the two windings corresponding to the fixed coil are connected on the same side, to prevent the coils from crossing.

[0058] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the overall structure of a motor provided in an embodiment of this application;

[0060] Figure 2 This is a schematic diagram of a planar structure of a first sub-motor and a second sub-motor provided in an embodiment of this application;

[0061] Figure 3 This is a schematic diagram of the winding structure of an electric motor provided in an embodiment of this application;

[0062] Figure 4 This is a schematic diagram of a wiring structure for a motor provided in an embodiment of this application;

[0063] Figure 5This is a planar unfolded schematic diagram of a first stator core and a second stator core for winding a set of energized parts, provided in an embodiment of this application.

[0064] Figure 6 This is a schematic diagram of the connection structure of a set of energized parts of an electric motor provided in an embodiment of this application;

[0065] Figure 7 This is a schematic diagram of the overall structure of a first sub-motor provided in an embodiment of this application;

[0066] Figure 8 This is an exploded structural diagram of a first sub-motor provided in an embodiment of this application.

[0067] In the diagram: 1-Motor; 11-First sub-motor; 110-First stator core; 111-First stator tooth; 112-First stator slot; 113-First load shaft; 114-First rotor core; 115-Slot insulation layer; 116-End insulation layer; 12-Second sub-motor; 120-Second stator core; 121-Second stator tooth; 122-Second stator slot; 13-Electrified part; 131-First coil; 1311-First winding; 13111-First end; 1312-Second winding; 13121-Second end; 132-Second coil; 1321-Third winding; 13211-Third end; 1322-Fourth winding; 13221-Fourth end; 133-Third coil; 1331-Fifth winding; 13311-Fifth end; 1332-Sixth winding; 13321-Sixth end. Detailed Implementation

[0068] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0069] like Figures 1 to 8 As shown, an embodiment of this application provides a motor 1, comprising:

[0070] The first sub-motor 11 includes a first stator core 110; the first stator core 110 is provided with a plurality of first stator teeth 111;

[0071] The second sub-motor 12 includes a second stator core 120, and the second stator core 120 is provided with a plurality of second stator teeth 121;

[0072] Multiple sets of energized parts 13, each set of energized parts 13 includes a first coil 131, a second coil 132 and a third coil 133 of different phases; each coil in each set of energized parts 13 is wound around the outside of a first stator tooth 111 and a second stator tooth 121 respectively;

[0073] When the first stator teeth 111 and the second stator teeth 121 corresponding to each coil in each group of the energized parts 13 are symmetrically arranged, it is used to realize that the first sub-motor 11 and the second sub-motor 12 rotate in the same direction; or

[0074] When one coil in each group of energized parts 13 constitutes a fixed coil, and the two coils in each group of energized parts 13 other than the fixed coil constitute an adjusting coil, and the first stator tooth 111 and the second stator tooth 121 corresponding to each coil in the adjusting coil are misaligned, and the first stator tooth 111 and the second stator tooth 121 corresponding to the fixed coil are symmetrically arranged, it is used to realize that the rotation directions of the first sub-motor 11 and the second sub-motor 12 are opposite.

[0075] In an optional embodiment of this application, each of the first coils 131 includes a first winding 1311 and a second winding 1312 connected together;

[0076] Each of the second coils 132 includes a third winding 1321 and a fourth winding 1322 connected together; each of the third coils 133 includes a fifth winding 1331 and a sixth winding 1332 connected together.

[0077] In one optional embodiment of this application, the fixed coil includes one coil, and the adjusting coil includes two coils;

[0078] The fixed coil includes one of the first coil 131, the second coil 132, and the third coil 133;

[0079] If the fixed coil includes the first coil 131, then the adjusting coil includes the second coil 132 and the third coil 133; or

[0080] If the fixed coil includes the second coil 132, then the adjusting coil includes the first coil 131 and the third coil 133; or

[0081] If the fixed coil includes the third coil 133, then the adjusting coil includes the first coil 131 and the second coil 132.

[0082] In an optional embodiment of this application, the two first ends 13111 of the first winding 1311 and the two second ends 13121 of the second winding 1312 are respectively connected on the same side;

[0083] The two third ends 13211 of the third winding 1321 and the two fourth ends 13221 of the fourth winding 1322 are connected on the same side;

[0084] The two fifth ends 13311 of the fifth winding 1331 and the two sixth ends 13321 of the sixth winding 1332 are connected on the same side.

[0085] In the embodiments of this application, each coil of each group of energized parts 13 is wound around the outside of the symmetrically arranged first stator teeth 111 and second stator teeth 121, so that the first sub-motor 11 and the second sub-motor 12 can rotate in the same direction while ensuring the same rotation speed; in addition, the ends of the two windings corresponding to each coil are connected on the same side to prevent the two sides of each coil from crossing.

[0086] like Figure 3 and Figure 4 As shown in the embodiment of this application, when the first sub-motor 11 and the second sub-motor 12 rotate in the same direction, since the two connected windings of the first coil 131, the second coil 132 and the third coil 133 are respectively wound around the outside of the two symmetrically arranged first stator teeth 111 and the second stator teeth 121, each first coil 131, the second coil 132 and the third coil 133 are in a straight line shape, and the first coil 131, the second coil 132 and the third coil 133 of each energized part 13 are arranged parallel to each other.

[0087] In an optional embodiment of this application, the first stator core 110 and the second stator core 120 are symmetrically arranged;

[0088] The first stator core 110 includes N first stator teeth 111;

[0089] The second stator core 120 includes N second stator teeth 121;

[0090] The Mth first stator tooth 111 and the Mth second stator tooth 121 are symmetrically arranged;

[0091] Where N is an integer multiple of 3; 1≤M≤N, and M is an integer.

[0092] In the embodiments of this application, the motor 1 is a three-phase motor, that is, the motor 1 includes 3 live wires. Each coil of each group of energized parts 13 corresponds to one phase. For example, the first coil 131 corresponds to the first phase, the second coil 132 corresponds to the second phase, and the third coil 133 corresponds to the third phase.

[0093] Furthermore, N first stator teeth 111 are evenly arranged in a ring inside the first stator core 110; N second stator teeth 121 are also evenly arranged in a ring inside the second stator core 120; if the N first stator teeth 111 and the N second stator teeth 121 are numbered, the first stator teeth 111 and the second stator teeth 121 with the same number are symmetrically arranged.

[0094] In an optional embodiment of this application, the first stator core 110 is provided with N first stator slots 112, and a first stator tooth 111 is provided between every two first stator slots 112; the first stator slots 112 are used to provide a first wire passage.

[0095] The second stator core 120 is provided with N second stator slots 122, and a second stator tooth 121 is provided between every two second stator slots 122; the second stator slots 122 are used to provide a second wire passage.

[0096] Where 1≤M≤N-1, an Mth first stator slot 112 and an (M+1)th first stator slot 112 are respectively provided on both sides of the Mth first stator tooth 111. For example, a first first stator slot 112 and a second first stator slot 112 are respectively provided on both sides of the first first stator tooth 111; a second first stator slot 112 and a third first stator slot 112 are respectively provided on both sides of the second first stator tooth 111; a third first stator slot 112 and a fourth first stator slot 112 are respectively provided on both sides of the third first stator tooth 111; and an (N-1)th first stator slot 112 and an Nth first stator slot 112 are respectively provided on both sides of the (N-1)th first stator tooth 111.

[0097] In the case of M=N, the first stator slot 112 and the first stator slot 112 are respectively provided on both sides of the first stator tooth 111 of the Mth (M=N)th first stator tooth 111.

[0098] For example, when 1≤M≤N-1, an Mth second stator slot 122 and an (M+1)th second stator slot 122 are respectively provided on both sides of the Mth second stator tooth 121. For example, a first second stator slot 122 and a second second stator slot 122 are respectively provided on both sides of the first second stator tooth 121; a second second stator slot 122 and a third second stator slot 122 are respectively provided on both sides of the second second stator tooth 121; a third second stator slot 122 and a fourth second stator slot 122 are respectively provided on both sides of the third second stator tooth 121; and an (N-1)th second stator slot 122 and an Nth second stator slot 122 are respectively provided on both sides of the (N-1)th second stator tooth 121.

[0099] In the case of M=N, the Mth (M=N)th second stator slot 122 and the first second stator slot 122 are respectively provided on both sides of the Mth (M=N)th second stator tooth 121.

[0100] By analogy, the positional relationship between all the first stator slots 112 and the first stator teeth 111 can be determined; at the same time, the positional relationship between all the second stator slots 122 and the second stator teeth 121 can also be determined.

[0101] According to the above positional relationship, in the embodiments of this application, the coil can be passed through the corresponding first stator slot 112 and second stator slot 122, and then wound around the outside of the corresponding first stator tooth 111 and second stator tooth 121.

[0102] In an optional embodiment of this application, the first coil 131 in each group of energized parts 13 is wound around the outside of the Mth first stator tooth 111 and the Mth second stator tooth 121 that are symmetrically arranged; where M is a positive integer.

[0103] The second coil 132 in each group of energized parts 13 is wound around the outside of the symmetrically arranged M+1th first stator tooth 111 and M+1th second stator tooth 121;

[0104] The third coil 133 in each group of the energized parts 13 is wound around the outside of the symmetrically arranged M+2th first stator tooth 111 and M+2th second stator tooth 121;

[0105] This is used to ensure that the first sub-motor 11 and the second sub-motor 12 rotate in the same direction; for example, the first sub-motor 11 and the second sub-motor 12 rotate simultaneously in a clockwise direction.

[0106] Specifically, in the case of 1≤M≤N-3, the first winding 1311 passes through the Mth first stator slot 112 and the M+1th first stator slot 112 and is wound around the outside of the Mth first stator tooth 111, and the second winding 1312 passes through the M+1th second stator slot 122 and the M+2th second stator slot 122 and is wound around the outside of the M+1th second stator tooth 121;

[0107] The third winding 1321 passes through the (M+1)th first stator slot 112 and the (M+2)th first stator slot 112 and is wound around the outside of the (M+1)th first stator tooth 111; the fourth winding 1322 passes through the (M+1)th second stator slot 122 and the (M+2)th second stator slot 122 and is wound around the outside of the (M+1)th second stator tooth 121.

[0108] The fifth winding 1331 passes through the (M+2)th and (M+3)th first stator slots 112 and is wound around the outside of the (M+2)th first stator tooth 111. The sixth winding 1332 passes through the (M+2)th and (M+3)th second stator slots 122 and is wound around the outside of the (M+2)th second stator tooth 121.

[0109] When M = N-2, the first winding 1311 passes through the (N-2)th first stator slot 112 and the (N-1)th first stator slot 112 and is wound around the outside of the (N-2)th first stator tooth 111, and the second winding 1312 passes through the (N-2)th second stator slot 122 and the (N-1)th second stator slot 122 and is wound around the outside of the (N-2)th second stator tooth 121;

[0110] The third winding 1321 passes through the (N-1)th first stator slot 112 and the Nth first stator slot 112 and is wound around the outside of the (N-1)th first stator tooth 111; the fourth winding 1322 passes through the Nth second stator slot 122 and the first second stator slot 122 and is wound around the outside of the Nth second stator tooth 121.

[0111] The fifth winding 1331 passes through the Nth first stator slot 112 and the first first stator slot 112 and is wound around the outside of the Nth first stator tooth 111. The sixth winding 1332 passes through the Nth second stator slot 122 and the first second stator slot 122 and is wound around the outside of the Nth second stator tooth 121.

[0112] In an optional embodiment of this application, the first coil 131 in each group of energized parts 13 is wound around the outside of the symmetrically arranged (M+2)th first stator tooth 111 and (M+2)th second stator tooth 121; where M is a positive integer;

[0113] The second coil 132 in each group of energized parts 13 is wound around the outside of the symmetrically arranged M+1th first stator tooth 111 and M+1th second stator tooth 121;

[0114] The third coil 133 in each group of the energized parts 13 is wound around the outside of the Mth first stator tooth 111 and the Mth second stator tooth 121 that are symmetrically arranged;

[0115] This is used to ensure that the first sub-motor 11 and the second sub-motor 12 rotate in the same direction; for example, the first sub-motor 11 and the second sub-motor 12 rotate simultaneously in a counterclockwise direction.

[0116] Specifically, in the case of 1≤M≤N-3, the fifth winding 1331 passes through the Mth first stator slot 112 and the M+1th first stator slot 112 and is wound around the outside of the Mth first stator tooth 111, and the sixth winding 1332 passes through the Mth second stator slot 122 and the second second stator slot 122 and is wound around the outside of the M+1th second stator tooth 121;

[0117] The third winding 1321 passes through the (M+1)th first stator slot 112 and the third first stator slot 112 and is wound around the outside of the (M+2)th first stator tooth 111; the fourth winding 1322 passes through the (M+1)th second stator slot 122 and the (M+2)th second stator slot 122 and is wound around the outside of the (M+1)th second stator tooth 121.

[0118] The first winding 1311 passes through the (M+2)th first stator slot 112 and the (M+3)th first stator slot 112 and is wound around the outside of the (M+2)th first stator tooth 111. The second winding 1312 passes through the (M+2)th second stator slot 122 and the (M+3)th second stator slot 122 and is wound around the outside of the (M+2)th second stator tooth 121.

[0119] When M = N-2, the fifth winding 1331 passes through the (N-2)th first stator slot 112 and the (N-1)th first stator slot 112 and is wound around the outside of the (N-2)th first stator tooth 111, and the sixth winding 1332 passes through the (N-2)th second stator slot 122 and the (N-1)th second stator slot 122 and is wound around the outside of the (N-2)th second stator tooth 121;

[0120] The third winding 1321 passes through the (N-1)th first stator slot 112 and the Nth first stator slot 112 and is wound around the outside of the (N-1)th first stator tooth 111; the fourth winding 1322 passes through the (N-1)th second stator slot 122 and the Nth second stator slot 122 and is wound around the outside of the (N-1)th second stator tooth 121.

[0121] The first winding 1311 passes through the Nth first stator slot 112 and the first first stator slot 112 and is wound around the outside of the Nth first stator tooth 111. The second winding 1312 passes through the Nth second stator slot 122 and the first second stator slot 122 and is wound around the outside of the Nth second stator tooth 121.

[0122] For example, the first stator core 110 of the first sub-motor 11 has 9 first stator teeth 111;

[0123] The second stator core 120 of the second sub-motor 12 has 9 second stator teeth 121; that is, N = 9.

[0124] Then, the first sub-motor 11 and the second sub-motor 12 correspond to three energized parts 13;

[0125] Specifically, the first winding 1311 of the first energized part 13 passes through the first first stator slot 112 and the second first stator slot 112, and is wound around the outside of the first first stator tooth 111; the second winding 1312 of the first energized part 13 passes through the first second stator slot 122 and the second second stator slot 122, and is wound around the outside of the first second stator tooth 121.

[0126] Furthermore, the two first ends 13111 of the first winding 1311 in the first energized part 13 and the two second ends 13121 of the second winding 1312 are connected on the same side respectively;

[0127] The third winding 1321 of the first energized part 13 passes through the second first stator slot 112 and the third first stator slot 112, and is wound around the outside of the second first stator tooth 111; the fourth winding 1322 of the first energized part 13 passes through the second second stator slot 122 and the third second stator slot 122, and is wound around the outside of the second second stator tooth 121.

[0128] Furthermore, the two third ends 13211 of the third winding 1321 of the first energized part 13 and the two fourth ends 13221 of the fourth winding 1322 are connected on the same side respectively;

[0129] The fifth winding 1331 of the first energized part 13 passes through the third first stator slot 112 and the fourth first stator slot 112, and is wound around the outside of the third first stator tooth 111; the sixth winding 1332 of the first energized part 13 passes through the third second stator slot 122 and the fourth second stator slot 122, and is wound around the outside of the third second stator tooth 121.

[0130] Furthermore, the two fifth ends 13311 of the fifth winding 1331 of the first energized part 13 and the two sixth ends 13321 of the sixth winding 1332 are connected on the same side respectively;

[0131] The first winding 1311 of the second energized part 13 passes through the fourth first stator slot 112 and the fifth first stator slot 112, and is wound around the outside of the fourth first stator tooth 111; the second winding 1312 of the second energized part 13 passes through the fourth second stator slot 122 and the fifth second stator slot 122, and is wound around the outside of the fourth second stator tooth 121.

[0132] Furthermore, the two first ends 13111 of the first winding 1311 of the second energized part 13 and the two second ends 13121 of the second winding 1312 are connected on the same side;

[0133] The third winding 1321 of the second energized part 13 passes through the fifth first stator slot 112 and the sixth first stator slot 112, and is wound around the outside of the fifth first stator tooth 111; the fourth winding 1322 of the second energized part 13 passes through the fifth second stator slot 122 and the sixth second stator slot 122, and is wound around the outside of the fifth second stator tooth 121.

[0134] Furthermore, the two third ends 13211 of the third winding 1321 of the second energized part 13 and the two fourth ends 13221 of the fourth winding 1322 are connected on the same side respectively;

[0135] The fifth winding 1331 of the second energized part 13 passes through the sixth first stator slot 112 and the seventh first stator slot 112, and is wound around the outside of the sixth first stator tooth 111; the sixth winding 1332 of the second energized part 13 passes through the seventh second stator slot 122 and the eighth second stator slot 122, and is wound around the outside of the sixth second stator tooth 121.

[0136] Furthermore, the two fifth ends 13311 of the fifth winding 1331 of the second energized part 13 and the two sixth ends 13321 of the sixth winding 1332 are connected on the same side;

[0137] The first winding 1311 of the third energized part 13 passes through the seventh first stator slot 112 and the eighth first stator slot 112, and is wound around the outside of the seventh first stator tooth 111; the second winding 1312 of the third energized part 13 passes through the seventh second stator slot 122 and the eighth second stator slot 122, and is wound around the outside of the seventh second stator tooth 121.

[0138] Furthermore, the two first ends 13111 of the first winding 1311 of the third energized part 13 and the two second ends 13121 of the second winding 1312 are connected on the same side;

[0139] The third winding 1321 of the third energized part 13 passes through the eighth first stator slot 112 and the ninth first stator slot 112, and is wound around the outside of the eighth first stator tooth 111; the fourth winding 1322 of the third energized part 13 passes through the eighth second stator slot 122 and the ninth second stator slot 122, and is wound around the outside of the eighth second stator tooth 121.

[0140] Furthermore, the two third ends 13211 of the third winding 1321 and the two fourth ends 13221 of the fourth winding 1322 are connected on the same side;

[0141] The fifth winding 1331 of the third energized part 13 passes through the ninth first stator slot 112 and the first first stator slot 112, and is wound around the outside of the ninth first stator tooth 111; the sixth winding 1332 of the third energized part 13 passes through the ninth second stator slot 122 and the first second stator slot 122, and is wound around the outside of the ninth second stator tooth 121.

[0142] Furthermore, the two fifth ends 13311 of the fifth winding 1331 of the third energized part 13 and the two sixth ends 13321 of the sixth winding 1332 are connected on the same side.

[0143] In the embodiments of this application, when the first coil 131, the second coil 132, and the third coil 133 of each energized part 13 are respectively wound around the outside of the symmetrically arranged first stator teeth 111 and second stator teeth 121, the first sub-motor 11 and the second sub-motor 12 can rotate at the same speed and in the same direction; for example, the first sub-motor 11 and the second sub-motor 12 can rotate at the same speed and in a counterclockwise or clockwise direction.

[0144] like Figure 3 and Figure 4 As shown in the embodiment of this application, when the rotation directions of the first sub-motor 11 and the second sub-motor 12 are opposite, since each pair of connected windings of the adjustment coil is wound around two stator teeth 111 and 121 located in a misaligned manner, both coils of the adjustment coil are Z-shaped.

[0145] like Figure 5 As shown, in an optional embodiment of this application, if the fixed coil of each group of energized parts 13 includes a first coil 131, then the adjustment coil of each group of energized parts 13 includes a second coil 132 and a third coil 133.

[0146] The first coil 131 is wound around the outside of the Mth first stator tooth 111 and the Mth second stator tooth 121, which are symmetrically arranged; where M is a positive integer.

[0147] The second coil 132 is wound around the outside of the misaligned M+1th first stator tooth 111 and the M+2th second stator tooth 121;

[0148] The third coil 133 is wound around the outside of the misaligned M+2th first stator tooth 111 and the M+1th second stator tooth 121;

[0149] This is used to achieve the opposite rotation directions of the first sub-motor 11 and the second sub-motor 12; for example, while the first sub-motor 11 and the second sub-motor 12 rotate at the same speed, the first sub-motor 11 rotates in a clockwise direction and the second sub-motor 12 rotates in a counterclockwise direction.

[0150] Specifically, when 1 ≤ M ≤ N-3, the first winding 1311 of each group of energized parts 13 passes through the Mth first stator slot 112 and the (M+1)th first stator slot 112, and is wound around the outside of the Mth first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the Mth second stator slot 122 and the (M+1)th second stator slot 122, and is wound around the outside of the Mth second stator tooth 121; the third winding 1321 of each group of energized parts 13 passes through the (M+1)th first stator slot 112 and the (M+2)th first stator slot 112, and is wound around the outside of the (M+1)th first stator tooth 111; the first winding 1311 of each group of energized parts 13 passes through the Mth first stator slot 112 and the (M+2)th first stator slot 112, and is wound around the outside of the (M+1)th first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the Mth second stator slot 122 and the (M+2)th first stator slot 112, and is wound around the outside of the (M+1)th first stator tooth 111; the third winding 1321 of each group of energized parts 13 passes through the Mth first stator slot 112 and the (M+2)th first stator slot 112, and is wound around the outside of the (M+1)th first stator tooth 111; the second winding 1311 of each group of energized parts 13 passes through the Mth first stator slot 112 and the (M+2)th first stator slot 112, and is wound around the outside of the (M+1) The fourth winding 1322 passes through the (M+2)th and (M+3)th second stator slots 122 and is wound around the outside of the (M+2)th second stator tooth 121; the fifth winding 1331 of each group of energized parts 13 passes through the (M+2)th and (M+3)th first stator slots 112 and is wound around the outside of the (M+2)th first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the (M+1)th and (M+2)th second stator slots 122 and is wound around the outside of the (M+1)th second stator tooth 121; these are used to achieve opposite rotation directions for the first sub-motor 11 and the second sub-motor 12.

[0151] Specifically, when M = N-2, the first winding 1311 of each group of energized parts 13 passes through the (N-2)th and (N-1)th first stator slots 112 and is wound around the outside of the (N-2)th first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the (N-2)th and (N-1)th second stator slots 122 and is wound around the outside of the (N-2)th second stator tooth 121; the third winding 1321 of each group of energized parts 13 passes through the (N-1)th and (N)th first stator slots 112 and is wound around the outside of the (N-1)th first stator tooth 111; each The fourth winding 1322 of each group of energized parts 13 passes through the Nth second stator slot 122 and the first second stator slot 122, and is wound around the outside of the Nth second stator tooth 121; the fifth winding 1331 of each group of energized parts 13 passes through the Nth first stator slot 112 and the first first stator slot 112, and is wound around the outside of the Nth first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the (N-1)th second stator slot 122 and the Nth second stator slot 122, and is wound around the outside of the (N-1)th second stator tooth 121; this is used to realize that the first sub-motor 11 and the second sub-motor 12 rotate in opposite directions.

[0152] In an optional embodiment of this application, if the fixed coil of each group of energized parts 13 includes a first coil 131, then the adjustment coil of each group of energized parts 13 includes a second coil 132 and a third coil 133.

[0153] The first coil 131 is wound around the outside of the Mth first stator tooth 111 and the Mth second stator tooth 121, which are symmetrically arranged; where M is a positive integer.

[0154] The second coil 132 is wound around the outside of the misaligned M+2th first stator tooth 111 and the M+1th second stator tooth 121;

[0155] The third coil 133 is wound around the outside of the misaligned M+1th first stator tooth 111 and the M+2th second stator tooth 121;

[0156] This is used to achieve opposite rotation directions for the first sub-motor 11 and the second sub-motor 12;

[0157] For example, when the first sub-motor 11 and the second sub-motor 12 rotate at the same speed, the first sub-motor 11 rotates counterclockwise and the second sub-motor 12 rotates clockwise.

[0158] Specifically, when 1≤M≤N-3, the first winding 1311 of each group of energized parts 13 passes through the Mth first stator slot 112 and the (M+1)th first stator slot 112, and is wound around the outside of the Mth first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the Mth second stator slot 122 and the (M+1)th second stator slot 122, and is wound around the outside of the Mth second stator tooth 121.

[0159] The third winding 1321 of each group of energized parts 13 passes through the (M+2)th first stator slot 112 and the (M+3)th first stator slot 112, and is wound around the outside of the (M+2)th first stator tooth 111; the fourth winding 1322 of each group of energized parts 13 passes through the (M+1)th second stator slot 122 and the (M+2)th second stator slot 122, and is wound around the outside of the (M+1)th second stator tooth 121.

[0160] The fifth winding 1331 of each group of energized parts 13 passes through the (M+1)th first stator slot 112 and the (M+2)th first stator slot 112, and is wound around the outside of the (M+1)th first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the (M+2)th first stator slot 112 and the (M+3)th first stator slot 112, and is wound around the outside of the (M+2)th second stator tooth 121.

[0161] This is used to make the first sub-motor 11 and the second sub-motor 12 rotate in opposite directions.

[0162] When M = N-2, the first winding 1311 of each group of energized parts 13 passes through the (N-2)th first stator slot 112 and the (N-1)th first stator slot 112, and is wound around the outside of the (N-2)th first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the (N-2)th second stator slot 122 and the (N-1)th second stator slot 122, and is wound around the outside of the (N-2)th second stator tooth 121.

[0163] The third winding 1321 of each group of energized parts 13 passes through the Nth first stator slot 112 and the first first stator slot 112, and is wound around the outside of the Nth first stator tooth 111; the fourth winding 1322 of each group of energized parts 13 passes through the (N-1)th second stator slot 122 and the Nth second stator slot 122, and is wound around the outside of the (N-1)th second stator tooth 121;

[0164] The fifth winding 1331 of each group of energized parts 13 passes through the (N-1)th first stator slot 112 and the Nth first stator slot 112, and is wound around the outside of the (N-1)th first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the Nth first stator slot 112 and the first first stator slot 112, and is wound around the outside of the Nth second stator tooth 121;

[0165] This is used to make the first sub-motor 11 and the second sub-motor 12 rotate in opposite directions.

[0166] In an optional embodiment of this application, if the fixed coil of each group of energized parts 13 includes a third coil 133, then the adjustment coil of each group of energized parts 13 includes a first coil 131 and a second coil 132.

[0167] The first coil 131 is wound around the outside of the Mth first stator tooth 111 and the (M+1)th second stator tooth 121, which are staggered; where M is a positive integer.

[0168] The second coil 132 is wound around the outside of the (M+1)th first stator tooth 111 and the Mth second stator tooth 121, which are staggered.

[0169] The third coil 133 is wound around the outside of the symmetrically arranged M+2th first stator tooth 111 and M+2th second stator tooth 121;

[0170] This is used to achieve the opposite rotation directions of the first sub-motor 11 and the second sub-motor 12; for example, while the first sub-motor 11 and the second sub-motor 12 rotate at the same speed, the first sub-motor 11 rotates in a clockwise direction and the second sub-motor 12 rotates in a counterclockwise direction.

[0171] Specifically, when 1≤M≤N-3, the first winding 1311 of each group of energized parts 13 passes through the Mth first stator slot 112 and the (M+1)th first stator slot 112, and is wound around the outside of the Mth first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the (M+1)th second stator slot 122 and the (M+2)th second stator slot 122, and is wound around the outside of the (M+1)th second stator tooth 121.

[0172] The third winding 1321 of each group of energized parts 13 passes through the (M+1)th first stator slot 112 and the (M+2)th first stator slot 112, and is wound around the outside of the (M+1)th first stator tooth 111; the fourth winding 1322 of each group of energized parts 13 passes through the Mth second stator slot 122 and the (M+1)th second stator slot 122, and is wound around the outside of the Mth second stator tooth 121;

[0173] The fifth winding 1331 of each group of energized parts 13 passes through the (M+2)th and (M+3)th first stator slots 112 and is wound around the outside of the (M+2)th first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the (M+2)th and (M+3)th second stator slots 122 and is wound around the outside of the (M+2)th second stator tooth 121.

[0174] This is used to make the first sub-motor 11 and the second sub-motor 12 rotate in opposite directions.

[0175] When M = N-2, the first winding 1311 of each group of energized parts 13 passes through the (N-2)th first stator slot 112 and the (N-1)th first stator slot 112, and is wound around the outside of the (N-2)th first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the (N-1)th second stator slot 122 and the Nth second stator slot 122, and is wound around the outside of the (N-1)th second stator tooth 121;

[0176] The third winding 1321 of each group of energized parts 13 passes through the (N-1)th first stator slot 112 and the Nth first stator slot 112, and is wound around the outside of the (N-1)th first stator tooth 111; the fourth winding 1322 of each group of energized parts 13 passes through the (N-2)th second stator slot 122 and the (N-1)th second stator slot 122, and is wound around the outside of the (N-2)th second stator tooth 121.

[0177] The fifth winding 1331 of each group of energized parts 13 passes through the Nth first stator slot 112 and the first first stator slot 112, and is wound around the outside of the Nth first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the Nth second stator slot 122 and the first second stator slot 122, and is wound around the outside of the Nth second stator tooth 121;

[0178] This is used to make the first sub-motor 11 and the second sub-motor 12 rotate in opposite directions.

[0179] In an optional embodiment of this application, if the fixed coil of each group of energized parts 13 includes a third coil 133, then the adjustment coil of each group of energized parts 13 includes a first coil 131 and a second coil 132.

[0180] The first coil 131 is wound around the outside of the (M+1)th first stator tooth 111 and the Mth second stator tooth 121, which are staggered; where M is a positive integer.

[0181] The second coil 132 is wound around the outside of the Mth first stator tooth 111 and the (M+1)th second stator tooth 121, which are misaligned.

[0182] The third coil 133 is wound around the outside of the symmetrically arranged M+2th first stator tooth 111 and M+2th second stator tooth 121;

[0183] This is used to achieve the opposite rotation directions of the first sub-motor 11 and the second sub-motor 12; for example, while the first sub-motor 11 and the second sub-motor 12 rotate at the same speed, the first sub-motor 11 rotates in a counterclockwise direction and the second sub-motor 12 rotates in a clockwise direction.

[0184] Specifically, when 1≤M≤N-3, the first winding 1311 of each group of energized parts 13 passes through the (M+1)th first stator slot 112 and the (M+2)th first stator slot 112, and is wound around the outside of the (M+1)th first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the Mth second stator slot 122 and the (M+1)th second stator slot 122, and is wound around the outside of the Mth second stator tooth 121;

[0185] The third winding 1321 of each group of energized parts 13 passes through the Mth first stator slot 112 and the (M+1)th first stator slot 112, and is wound around the outside of the Mth first stator tooth 111; the fourth winding 1322 of each group of energized parts 13 passes through the (M+1)th second stator slot 122 and the (M+2)th second stator slot 122, and is wound around the outside of the (M+1)th second stator tooth 121.

[0186] The fifth winding 1331 of each group of energized parts 13 passes through the (M+2)th and (M+3)th first stator slots 112 and is wound around the outside of the (M+2)th first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the (M+2)th and (M+3)th second stator slots 122 and is wound around the outside of the (M+2)th second stator tooth 121.

[0187] This is used to make the first sub-motor 11 and the second sub-motor 12 rotate in opposite directions.

[0188] When M = N-2, the first winding 1311 of each group of energized parts 13 passes through the (N-1)th first stator slot 112 and the Nth first stator slot 112, and is wound around the outside of the (N-1)th first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the (N-2)th second stator slot 122 and the (N-1)th second stator slot 122, and is wound around the outside of the (N-2)th second stator tooth 121.

[0189] The third winding 1321 of each group of energized parts 13 passes through the (N-2)th first stator slot 112 and the (N-1)th first stator slot 112, and is wound around the outside of the (N-2)th first stator tooth 111; the fourth winding 1322 of each group of energized parts 13 passes through the (N-1)th second stator slot 122 and the Nth second stator slot 122, and is wound around the outside of the (N-1)th second stator tooth 121;

[0190] The fifth winding 1331 of each group of energized parts 13 passes through the Nth first stator slot 112 and the first first stator slot 112, and is wound around the outside of the Nth first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the Nth second stator slot 122 and the first second stator slot 122, and is wound around the outside of the Nth second stator tooth 121;

[0191] This is used to make the first sub-motor 11 and the second sub-motor 12 rotate in opposite directions.

[0192] In an optional embodiment of this application, if the fixed coil of each group of energized parts 13 includes a second coil 132, then the adjustment coil of each group of energized parts 13 includes a first coil 131 and a third coil 133.

[0193] The first coil 131 is wound around the outside of the Mth first stator tooth 111 and the (M+2)th second stator tooth 121, which are staggered; where M is a positive integer.

[0194] The second coil 132 is wound around the outside of the symmetrically arranged (M+1)th first stator tooth 111 and the (M+1)th second stator tooth 121;

[0195] The third coil 133 is wound around the outside of the misaligned M+2th first stator tooth 111 and the Mth second stator tooth 121;

[0196] This is used to achieve the opposite rotation directions of the first sub-motor 11 and the second sub-motor 12; for example, while the first sub-motor 11 and the second sub-motor 12 rotate at the same speed, the first sub-motor 11 rotates in a clockwise direction and the second sub-motor 12 rotates in a counterclockwise direction.

[0197] Specifically, when 1≤M≤N-3, the first winding 1311 of each group of energized parts 13 passes through the Mth first stator slot 112 and the (M+1)th first stator slot 112, and is wound around the outside of the Mth first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the (M+2)th second stator slot 122 and the (M+3)th second stator slot 122, and is wound around the outside of the (M+2)th second stator tooth 121.

[0198] The third winding 1321 of each group of energized parts 13 passes through the (M+1)th first stator slot 112 and the (M+2)th first stator slot 112, and is wound around the outside of the (M+1)th first stator tooth 111; the fourth winding 1322 of each group of energized parts 13 passes through the (M+1)th second stator slot 122 and the (M+2)th second stator slot 122, and is wound around the outside of the (M+1)th second stator tooth 121.

[0199] The fifth winding 1331 of each group of energized parts 13 passes through the (M+2)th and (M+3)th first stator slots 112 and is wound around the outside of the (M+2)th first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the (M)th and (M+1)th second stator slots 122 and is wound around the outside of the (M)th second stator tooth 121.

[0200] This is used to make the first sub-motor 11 and the second sub-motor 12 rotate in opposite directions.

[0201] When M = N-2, the first winding 1311 of each group of energized parts 13 passes through the (N-2)th first stator slot 112 and the (N-1)th first stator slot 112, and is wound around the outside of the (N-2)th first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the Nth second stator slot 122 and the first second stator slot 122, and is wound around the outside of the Nth second stator tooth 121;

[0202] The third winding 1321 of each group of energized parts 13 passes through the (N-1)th first stator slot 112 and the Nth first stator slot 112, and is wound around the outside of the (N-1)th first stator tooth 111; the fourth winding 1322 of each group of energized parts 13 passes through the (N-1)th second stator slot 122 and the Nth second stator slot 122, and is wound around the outside of the (N-1)th second stator tooth 121;

[0203] The fifth winding 1331 of each group of energized parts 13 passes through the Nth first stator slot 112 and the first first stator slot 112, and is wound around the outside of the Nth first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the (N-2)th second stator slot 122 and the (N-1)th second stator slot 122, and is wound around the outside of the (N-2)th second stator tooth 121;

[0204] This is used to make the first sub-motor 11 and the second sub-motor 12 rotate in opposite directions.

[0205] In an optional embodiment of this application, if the fixed coil of each group of energized parts 13 includes a second coil 132, then the adjustment coil of each group of energized parts 13 includes a first coil 131 and a third coil 133.

[0206] The first coil 131 is wound around the outside of the (M+2)th first stator tooth 111 and the Mth second stator tooth 121, which are staggered; where M is a positive integer.

[0207] The second coil 132 is wound around the outside of the symmetrically arranged (M+1)th first stator tooth 111 and the (M+1)th second stator tooth 121;

[0208] The third coil 133 is wound around the outside of the Mth first stator tooth 111 and the M+2th second stator tooth 121, which are misaligned.

[0209] This is used to achieve the opposite rotation directions of the first sub-motor 11 and the second sub-motor 12; for example, while the first sub-motor 11 and the second sub-motor 12 rotate at the same speed, the first sub-motor 11 rotates in a counterclockwise direction and the second sub-motor 12 rotates in a clockwise direction.

[0210] Specifically, when 1≤M≤N-3, the first winding 1311 of each group of energized parts 13 passes through the (M+2)th and (M+3)th first stator slots 112 and is wound around the outside of the (M+2)th first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the Mth and (M+1)th second stator slots 122 and is wound around the outside of the Mth second stator tooth 121.

[0211] The third winding 1321 of each group of energized parts 13 passes through the (M+1)th first stator slot 112 and the (M+2)th first stator slot 112, and is wound around the outside of the (M+1)th first stator tooth 111; the fourth winding 1322 of each group of energized parts 13 passes through the (M+1)th third stator slot and the (M+2)th second stator slot 122, and is wound around the outside of the (M+1)th second stator tooth 121.

[0212] The fifth winding 1331 of each group of energized parts 13 passes through the Mth first stator slot 112 and the (M+1)th first stator slot 112, and is wound around the outside of the Mth first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the (M+2)th second stator slot 122 and the (M+3)th second stator slot 122, and is wound around the outside of the (M+2)th second stator tooth 121.

[0213] This is used to make the first sub-motor 11 and the second sub-motor 12 rotate in opposite directions.

[0214] When M = N-2, the first winding 1311 of each group of energized parts 13 passes through the Nth first stator slot 112 and the first first stator slot 112, and is wound around the outside of the Nth first stator tooth 111; the second winding 1312 of each group of energized parts 13 passes through the (N-2)th second stator slot 122 and the (N-1)th second stator slot 122, and is wound around the outside of the (N-2)th second stator tooth 121;

[0215] The third winding 1321 of each group of energized parts 13 passes through the (N-1)th first stator slot 112 and the Nth first stator slot 112, and is wound around the outside of the (N-1)th first stator tooth 111; the fourth winding 1322 of each group of energized parts 13 passes through the (N-1)th third stator slot and the Nth second stator slot 122, and is wound around the outside of the (N-1)th second stator tooth 121;

[0216] The fifth winding 1331 of each group of energized parts 13 passes through the (N-2)th first stator slot 112 and the (N-1)th first stator slot 112, and is wound around the outside of the (N-2)th first stator tooth 111; the sixth winding 1332 of each group of energized parts 13 passes through the Nth second stator slot 122 and the first second stator slot 122, and is wound around the outside of the Nth second stator tooth 121;

[0217] This is used to make the first sub-motor 11 and the second sub-motor 12 rotate in opposite directions.

[0218] For example, the first stator core 110 of the first sub-motor 11 has 9 first stator teeth 111;

[0219] The second stator core 120 of the second sub-motor 12 has 9 second stator teeth 121; that is, N = 9.

[0220] Then, the first sub-motor 11 and the second sub-motor 12 correspond to three energized parts 13; the first coil 131 of each energized part 13 is defined as a fixed coil, and the second coil 132 and the third coil 133 of each energized part 13 are defined as adjustment coils;

[0221] Specifically, the first winding 1311 of the first energized part 13 passes through the first first stator slot 112 and the second first stator slot 112, and is wound around the outside of the first first stator tooth 111; the second winding 1312 of the first energized part 13 passes through the first second stator slot 122 and the second second stator slot 122, and is wound around the outside of the first second stator tooth 121.

[0222] Furthermore, the two first ends 13111 of the first winding 1311 and the two second ends 13121 of the second winding 1312 are connected on the same side;

[0223] The third winding 1321 of the first energized part 13 passes through the third first stator slot 112 and the fourth first stator slot 112, and is wound around the outside of the third first stator tooth 111; the fourth winding 1322 of the first energized part 13 passes through the second second stator slot 122 and the third second stator slot 122, and is wound around the outside of the second second stator tooth 121.

[0224] Furthermore, the two third ends 13211 of the third winding 1321 and the two fourth ends 13221 of the fourth winding 1322 are connected on the same side;

[0225] The fifth winding 1331 of the first energized part 13 passes through the second first stator slot 112 and the third first stator slot 112, and is wound around the outside of the second first stator tooth 111; the sixth winding 1332 of the first energized part 13 passes through the third second stator slot 122 and the fourth second stator slot 122, and is wound around the outside of the third second stator tooth 121.

[0226] Furthermore, the two fifth ends 13311 of the fifth winding 1331 and the two sixth ends 13321 of the sixth winding 1332 are connected on the same side;

[0227] The first winding 1311 of the second energized part 13 passes through the fourth first stator slot 112 and the fifth first stator slot 112, and is wound around the outside of the fourth first stator tooth 111; the second winding 1312 of the second energized part 13 passes through the fourth second stator slot 122 and the fifth second stator slot 122, and is wound around the outside of the fourth second stator tooth 121.

[0228] Furthermore, the two first ends 13111 of the first winding 1311 and the two second ends 13121 of the second winding 1312 are connected on the same side;

[0229] The third winding 1321 of the second energized part 13 passes through the sixth and seventh first stator slots 112 and is wound around the outside of the sixth first stator tooth 111; the fourth winding 1322 of the second energized part 13 passes through the fifth and sixth second stator slots 122 and is wound around the outside of the fifth second stator tooth 121.

[0230] Furthermore, the two third ends 13211 of the third winding 1321 and the two fourth ends 13221 of the fourth winding 1322 are connected on the same side;

[0231] The fifth winding 1331 of the second energized part 13 passes through the fifth first stator slot 112 and the sixth first stator slot 112, and is wound around the outside of the fifth first stator tooth 111; the sixth winding 1332 of the second energized part 13 passes through the seventh second stator slot 122 and the eighth second stator slot 122, and is wound around the outside of the sixth second stator tooth 121.

[0232] Furthermore, the two fifth ends 13311 of the fifth winding 1331 and the two sixth ends 13321 of the sixth winding 1332 are connected on the same side;

[0233] The first winding 1311 of the third energized part 13 passes through the seventh first stator slot 112 and the eighth first stator slot 112, and is wound around the outside of the seventh first stator tooth 111; the second winding 1312 of the third energized part 13 passes through the seventh second stator slot 122 and the eighth second stator slot 122, and is wound around the outside of the seventh second stator tooth 121.

[0234] Furthermore, the two first ends 13111 of the first winding 1311 and the two second ends 13121 of the second winding 1312 are connected on the same side;

[0235] The third winding 1321 of the third energized part 13 passes through the ninth first stator slot 112 and the first first stator slot 112, and is wound around the outside of the ninth first stator tooth 111; the fourth winding 1322 of the third energized part 13 passes through the eighth second stator slot 122 and the ninth second stator slot 122, and is wound around the outside of the eighth second stator tooth 121.

[0236] Furthermore, the two third ends 13211 of the third winding 1321 and the two fourth ends 13221 of the fourth winding 1322 are connected on the same side;

[0237] The fifth winding 1331 of the third energized part 13 passes through the eighth first stator slot 112 and the ninth first stator slot 112, and is wound around the outside of the eighth first stator tooth 111; the sixth winding 1332 of the third energized part 13 passes through the ninth second stator slot 122 and the first second stator slot 122, and is wound around the outside of the ninth second stator tooth 121.

[0238] Furthermore, the two fifth ends 13311 of the fifth winding 1331 and the two sixth ends 13321 of the sixth winding 1332 are connected on the same side.

[0239] In the embodiments of this application, when any one of the first coil 131, the second coil 132, and the third coil 133 of each energized part 13 is wound around the outside of the symmetrically arranged first stator teeth 111 and second stator teeth 121, and the remaining two coils are wound around the outside of the staggered first stator teeth 111 and second stator teeth 121, the first sub-motor 11 and the second sub-motor 12 can rotate at the same speed and in opposite directions. For example, while the first sub-motor 11 and the second sub-motor 12 rotate at the same speed, the first sub-motor 11 rotates counterclockwise and the second sub-motor 12 rotates clockwise; or the first sub-motor 11 rotates clockwise and the second sub-motor 12 rotates counterclockwise. In addition, by adjusting the ends of the two windings corresponding to each coil in the coil to be connected on the same side, and fixing the ends of the two windings corresponding to the coil to be connected on the same side, coil crossing is prevented.

[0240] Compared to related technologies, where the windings of the same coil are separated, two motors would require two sets of wiring. The embodiments of this application, such as... Figure 6 As shown, even though there are a first sub-motor 11 and a second sub-motor 12, since both windings of each coil are connected, the entire motor 1 only needs to be connected to one set of wires, saving subsequent wiring work and improving wiring efficiency.

[0241] The embodiments of this application, such as Figure 6 As shown, since only one set of wiring is needed, connecting this set of wiring to the driver enables the first sub-motor 11 and the second sub-motor 12 to rotate simultaneously in the same direction or in opposite directions by one driver (for providing power to motor 1). This solves the problem in related technologies where two sets of wiring are required to drive two motors, and it is impossible to guarantee that the two motors rotate at the same speed when rotating in opposite directions.

[0242] Furthermore, in the embodiments of this application, one end of each group of energized parts 13 can be connected in a Y-type manner, and the other end of each group of energized parts 13 can be used as a group of lead-out wires; the embodiments of this application do not specifically limit this.

[0243] like Figure 7 and Figure 8 As shown in the embodiment of this application, the first stator core 110 is sleeved on the outside of the first rotor core 114, the first stator core 110 and the first rotor core 114 are rotatably connected, the first rotor core 114 is sleeved on the outside of the first load shaft 113, and the first rotor core 114 is used to drive the first load shaft 113 to rotate.

[0244] The second stator core 120 is sleeved on the outside of the second rotor core. The second stator core 120 is rotatably connected to the second rotor core. The second rotor core is sleeved on the outside of the second load shaft. The second rotor core is used to drive the second load shaft to rotate.

[0245] In the embodiments of this application, the first load shaft 113 is driven to the first load, and the second load shaft is driven to the second load, so as to simultaneously drive the first load and the second load to rotate at the same rotational speed. When the rotation direction of the first load shaft 113 is changed while the rotation direction of the second load shaft remains unchanged, or the rotation direction of the second load shaft is changed while the rotation direction of the first load shaft 113 remains unchanged, the first load and the second load can be rotated at the same rotational speed but in opposite rotational directions.

[0246] The embodiments of this application can be used to drive a counter-rotating fan to rotate. One of the fans of the counter-rotating fan is connected to the first load shaft 113 via a transmission connection; the other fan of the counter-rotating fan is connected to the second load shaft via a transmission connection. When the first sub-motor 11 and the second sub-motor 12 rotate at the same rotational speed but in opposite rotational directions, the two fans of the counter-rotating fan can be made to rotate at the same rotational speed but in opposite rotational directions.

[0247] like Figure 7 and Figure 8 As shown, in an optional embodiment of this application, each first stator slot 112 and each second stator slot 122 is provided with a slot insulation layer 115 to enhance the insulation between the first stator core 110 and the winding.

[0248] like Figure 8 As shown, in an optional embodiment of this application, end insulation layers 116 are respectively provided at the two ends of the first stator core 110 and the two ends of the second stator core 120 to enhance the insulation between the second stator core 120 and the winding, thereby achieving protection for the first stator core 110 and the second stator core 120.

[0249] Furthermore, other configurations and functions of the apparatus in the embodiments of this application are known to those skilled in the art, and will not be described in detail here to reduce redundancy.

[0250] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0251] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0252] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0253] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0254] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0255] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0256] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0257] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An electric motor, characterized in that, include: The first sub-motor includes a first stator core; the first stator core is provided with a plurality of first stator teeth; The second sub-motor includes a second stator core, and the second stator core is provided with a plurality of second stator teeth; Multiple sets of energized parts, each set of energized parts including a first coil, a second coil and a third coil of different phases; each coil in each set of energized parts is wound around the outside of a first stator tooth and a second stator tooth respectively; When the first stator teeth and second stator teeth corresponding to each coil in each group of the energized parts are symmetrically arranged, it is used to ensure that the first sub-motor and the second sub-motor rotate in the same direction; or When one coil in each group of energized parts constitutes a fixed coil, and the two coils in each group of energized parts other than the fixed coil constitute an adjusting coil, and the first stator tooth and the second stator tooth corresponding to each coil in the adjusting coil are misaligned, and the first stator tooth and the second stator tooth corresponding to the fixed coil are symmetrically arranged, it is used to realize that the rotation directions of the first sub-motor and the second sub-motor are opposite.

2. The motor according to claim 1, characterized in that, Each of the first coils includes a first winding and a second winding connected together; each of the second coils includes a third winding and a fourth winding connected together; each of the third coils includes a fifth winding and a sixth winding connected together.

3. The motor according to claim 2, characterized in that, The fixed coil includes one of the first coil, the second coil, and the third coil; If the fixed coil includes the first coil, then the adjusting coil includes the second coil and the third coil; or If the fixed coil includes the second coil, then the adjusting coil includes the first coil and the third coil; or If the fixed coil includes the third coil, then the adjusting coil includes the first coil and the second coil.

4. The motor according to claim 3, characterized in that, The first stator core and the second stator core are arranged symmetrically. The first stator core includes N first stator teeth; The second stator core includes N second stator teeth; The Mth first stator tooth and the Mth second stator tooth are symmetrically arranged; Where N is an integer multiple of 3; 1≤M≤N, and M is an integer.

5. The motor according to claim 4, characterized in that, In each group of energized sections, the first coil is wound around the outside of the Mth first stator tooth and the Mth second stator tooth, which are symmetrically arranged; where M is a positive integer. The second coil in each group of energized parts is wound around the outside of the (M+1)th first stator tooth and the (M+1)th second stator tooth, which are symmetrically arranged. The third coil in each group of the energized parts is wound around the outside of the symmetrically arranged M+2th first stator tooth and M+2th second stator tooth; This is used to ensure that the first sub-motor and the second sub-motor rotate in the same direction.

6. The motor according to claim 4, characterized in that, In each group of energized sections, the first coil is wound around the outside of the (M+2)th first stator tooth and the (M+2)th second stator tooth, which are symmetrically arranged; where M is a positive integer. The second coil in each group of energized parts is wound around the outside of the (M+1)th first stator tooth and the (M+1)th second stator tooth, which are symmetrically arranged. The third coil in each group of the energized parts is wound around the outside of the Mth first stator tooth and the Mth second stator tooth, which are symmetrically arranged. This is used to ensure that the first sub-motor and the second sub-motor rotate in the same direction.

7. The motor according to claim 4, characterized in that, If the fixed coil of each group of energized parts includes the first coil, then the adjusting coil of each group of energized parts includes the second coil and the third coil; Wherein, the first coil is wound around the outside of the Mth first stator tooth and the Mth second stator tooth, which are symmetrically arranged; where M is a positive integer; The second coil is wound around the outside of the (M+1)th first stator tooth and the (M+2)th second stator tooth, which are misaligned. The third coil is wound around the outside of the misaligned M+2th first stator tooth and the M+1th second stator tooth; This is used to make the first sub-motor and the second sub-motor rotate in opposite directions.

8. The motor according to claim 7, characterized in that, The first winding of each group of energized parts is wound around the outside of the Mth first stator tooth; the second winding of each group of energized parts is wound around the outside of the Mth second stator tooth; The third winding of each group of energized parts is wound around the outside of the (M+1)th first stator tooth; the fourth winding of each group of energized parts is wound around the outside of the (M+2)th second stator tooth; The fifth winding of each group of energized parts is wound around the outside of the M+2th first stator tooth; the sixth winding of each group of energized parts is wound around the outside of the M+1th second stator tooth; This is used to make the first sub-motor and the second sub-motor rotate in opposite directions.

9. The motor according to claim 4, characterized in that, If the fixed coil of each group of energized parts includes the first coil, then the adjusting coil of each group of energized parts includes the second coil and the third coil; Wherein, the first coil is wound around the outside of the Mth first stator tooth and the Mth second stator tooth, which are symmetrically arranged; where M is a positive integer; The second coil is wound around the outside of the misaligned M+2th first stator tooth and the M+1th second stator tooth; The third coil is wound around the outside of the misaligned M+1th first stator tooth and the M+2th second stator tooth; This is used to make the first sub-motor and the second sub-motor rotate in opposite directions.

10. The motor according to claim 9, characterized in that, The first winding of each group of energized parts is wound around the outside of the Mth first stator tooth; the second winding of each group of energized parts is wound around the outside of the Mth second stator tooth; The third winding of each group of energized parts is wound around the outside of the M+2th first stator tooth; the fourth winding of each group of energized parts is wound around the outside of the M+1th second stator tooth; The fifth winding of each group of energized parts is wound around the outside of the (M+1)th first stator tooth; the sixth winding of each group of energized parts is wound around the outside of the (M+2)th second stator tooth; This is used to make the first sub-motor and the second sub-motor rotate in opposite directions.

11. The motor according to claim 4, characterized in that, The first stator core has N first stator slots, and a first stator tooth is provided between every two first stator slots; the first stator slots are used to provide a first wire passage. The second stator core has N second stator slots, and a second stator tooth is provided between every two second stator slots; the second stator slots are used to provide a second wire passage.

12. The motor according to claim 2, characterized in that, The two first ends of the first winding are connected to the two second ends of the second winding on the same side; The two third ends of the third winding and the two fourth ends of the fourth winding are connected on the same side, respectively. The two fifth ends of the fifth winding and the two sixth ends of the sixth winding are connected on the same side.

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