Hairpin winding of a motor stator

Abstract

The present application relates to a kind of stator (1) for motor (401), comprising: a plurality of pins (2,21,22,23,24,25), which are arranged in the slot (51,52,53,54,55,56,57,58) of concentric circle at different distance from stator center point (M), each concentric circle forms a layer (L1, L2, L3, L4), wherein four corresponding pins (21,22,23,24,25) are connected in series with each other in different layers (L1, L2, L3, L4) and form winding (41):The first pin (21) of winding (41) is located in the first slot (51) in 4n-3 layer (L1), wherein n is natural number;The second pin (22) of winding (41) is located in the second slot (52) in 4n-2 layer (L2), wherein the second slot (52) is at the first radial distance (71) from the first slot (51) in the first circumferential direction of stator (1);The third pin (23) of winding (41) is located in the first slot (51) in 4n layer (L4);And the fourth pin (24) of winding (41) is located in the second slot (52) in 4n-1 layer (L3).

Description

Technical Field

[0001] The present invention relates to a stator with pins for use in electric motors, particularly electric motors. Background Technology

[0002] Electric motors are well-known and are increasingly used as electric motors to drive vehicles. An electric motor consists of a stator and a rotor.

[0003] The stator comprises multiple slots in which the windings are guided. The windings can be formed from insulated copper rods in the form of pins. The rotor is located within the stator and connected to the rotor shaft.

[0004] For example, such pin motors, U-pin motors, or hairpin motors are known from US9136738B2. Summary of the Invention

[0005] The object of this invention is to provide a stator having a winding composed of pins, which is easy to manufacture.

[0006] According to the present invention, the stator for an electric motor includes a plurality of pins arranged in slots on concentric circles at different distances from the center point of the stator, and each concentric circle forms a layer, wherein four pins in different layers are connected in series with each other to form a winding, the first pin of the winding is located in the first slot of the 4n-3 layer, where n is a natural number; the second pin of the winding is located in the second slot of the 4n-2 layer, wherein the second slot is a first radial distance away from the first slot in the first circumferential direction of the stator; the third pin of the winding is located in the first slot of the 4n layer; and the fourth pin of the winding is located in the second slot of the 4n-1 layer.

[0007] Stator with windings according to the invention can be readily manufactured and generates an effective electromagnetic field. These connection types create a conductive connection between pins in the slots. This connection type can be by welding conductors to the pins, or the pins can already be in the form of double pins, i.e., so-called U-pins, thus forming a connection upon insertion into the stator. Welding the ends of pins bent toward each other together also constitutes a connection type.

[0008] These layers can be numbered in ascending order from the outside to the inside relative to the stator center point.

[0009] Preferably, the stator may include first and second end faces, and a first pin and a second pin are connected to each other on the second end face by a first connection type, a second pin and a third pin are connected to each other on the first end face by a second connection type, and a third pin and a fourth pin are connected to each other on the second end face by a third connection type, wherein the first, second and third connection types are different from each other.

[0010] Different connection types enable improved manufacturing. The alternating positions of these connection types on different end faces allow for the efficient formation of windings around the stator teeth located between the slots.

[0011] Because the pins bend in different directions relative to the inside or outside of the stator, even the connection types on the same end face of the stator may be different.

[0012] Combinations of the above connection types on different or the same end faces of the stator are also possible. The same connection type on the same end face of the stator and different connection types on different end faces make easy and rapid manufacturing possible. For example, on one end face, a connection is created by a pre-bent pin, called a double pin or U-pin, while on another end face of the stator, the sides of a single pin or double pin are welded to each other. The weld points may be located at the feet of the single or double pins.

[0013] In one embodiment of the invention, the stator may include at least two windings, and at least a fourth pin in the second slot may be connected to a fifth pin in the 4n-3 layers of the third slot via a fourth connection type.

[0014] Furthermore, preferably, the stator may include multiple windings that extend over the entire circumference of the stator to form partial coils.

[0015] This means that the windings are symmetrical, thus producing a uniform rotating field.

[0016] In another embodiment, the corresponding pins of the two partial coils can be connected to each other by a fifth connection type.

[0017] These pins can be referred to as end pins because they mark the ends of portions of the coil. Preferably, the second and third end pins can be interconnected via a fifth connection type.

[0018] The fifth type of connection can be achieved, for example, by a specially bent pin.

[0019] Preferably, at least two portions of the coil can form a coil. Interconnection can be achieved using two end pins, i.e., for example, the fourth and eighth end pins. The coils can be interconnected within one-quarter of all slots in the stator, i.e., within one-quarter of the stator circumference.

[0020] Furthermore, preferably, the corresponding inputs of the pins of the two coils can be connected to each other via a sixth connection type.

[0021] The sixth type of connection can be generated by a conductor attached to the pin or by a conductive ring.

[0022] The two coils can be connected in parallel and can be fed by the same phase. The parallel connection can be achieved by connecting the first and fifth or fourth and eighth pins in pairs.

[0023] In a preferred embodiment of the invention, some coils may form six coils, and six phases may be assigned to them such that two coils assigned to different phases are located in adjacent slots.

[0024] Furthermore, since the two phases may each have approximately the same current and voltage curves, a six-phase inverter can control only a three-phase motor. This arrangement makes current distribution among the switching elements in the inverter possible.

[0025] In one embodiment of the invention, the corresponding inputs of the pins of the two coils can be connected to each other via a sixth connection type.

[0026] Preferably, the corresponding outputs of the pins of the two coils can be connected to each other, and the two coils can therefore be connected in parallel, particularly assigned to one phase.

[0027] Therefore, two coils in adjacent slots can be connected in parallel and fed by one phase, thus producing a stator with windings for a three-phase motor.

[0028] In one embodiment of the invention, the second connection type may include a first double pin formed by a second pin and a third pin, wherein the first double pin has two inwardly bent pin feet with corresponding weld points, and the first double pin bridges a first radial distance.

[0029] A double pin can be inserted into the stator from one end face and welded to another double pin from the other end face.

[0030] Preferably, the fourth connection type may include a second double pin formed by a fourth pin and a fifth pin, wherein the second double pin has two outwardly bent pin feet with corresponding weld points, and the second double pin bridges the first radial distance.

[0031] The first distance describes the number of slots to be bridged. The actual spatial distance to be bridged depends on the position of the pins in the layers, since double pins connect different layers.

[0032] Furthermore, preferably, the fifth connection type may include a third double pin formed by a second end pin and a third end pin, wherein the third double pin has two pin feet bent counterclockwise, the pin feet having corresponding weld points, and the third double pin bridges a third radial distance.

[0033] The third radial distance can be at least one groove longer than the first radial distance.

[0034] In one embodiment, the seventh connection type may include a fourth double pin formed by a sixth end pin and a seventh end pin, wherein the fourth double pin has two pin feet that are bent counterclockwise and bridge a second radial distance.

[0035] The second radial distance can be at least one groove shorter than the first radial distance.

[0036] Preferably, a single pin may include a first end pin, a fourth end pin, a fifth end pin, or an eighth end pin, and has a pin foot that is bent clockwise and has a weld point.

[0037] In one embodiment, the first connection type may be formed by a welded connection between a first weld point at the pin foot of a first double pin, a third double pin, or a fourth double pin and a second weld point at the pin foot of a second double pin or a single pin.

[0038] Preferably, the third connection type can be formed by a welded connection between a third welding point at the pin foot of the first double pin or single pin and a second welding point at the pin foot of the second double pin, third double pin, or fourth double pin.

[0039] According to the present invention, a vehicle includes an electric motor having a stator according to one of the preferred embodiments. Attached Figure Description

[0040] Figure 1 The stator is shown.

[0041] Figure 2 A stator with eight slots and four layers is shown.

[0042] Figure 3 The winding pattern of the first part of the coil is shown.

[0043] Figure 4 The winding pattern of the second part of the coil is shown.

[0044] Figure 5 A stator with two partial coils and the connection between the partial coils is shown, and thus the coils are shown.

[0045] Figure 6 A stator with two coils consisting of two corresponding partial coils is shown.

[0046] Figure 7 A stator with two additional coils is shown.

[0047] Figure 8 A stator with two additional coils is shown.

[0048] Figure 9 A stator with six coils is shown.

[0049] Figure 10 The winding pattern of the two coils is shown.

[0050] Figure 11 A single pin is shown.

[0051] Figure 12Another single pin is shown.

[0052] Figure 13 The first double pin is shown.

[0053] Figure 14 The second double pin is shown.

[0054] Figure 15 The third double pin is shown.

[0055] Figure 16 The fourth double pin is shown.

[0056] Figure 17 A vehicle having an electric motor, particularly an electric motor, including a stator is shown. Detailed Implementation

[0057] Figure 1 A stator 1 with multiple slots 5 is shown, in which pins 2 and 3 are guided. The stator has a first end face 7 and a second end face 9. On the first end face 7, inputs 81, 87, 101, 107, 111, 117 and outputs 83, 85, 103, 105, 113, 115 of some coils are shown, used to connect the pins to the energy source for motor operation. The inputs and outputs are located on the outermost or innermost layer of the stator, respectively. Of course, a rotor is also necessary for the operation of the motor. For connection purposes, the pins are close to each other, making short connecting wires possible.

[0058] Figure 2 Stator 1 with slots 51, 52, 53, 54, 55, 56, 57, 58 and pins 21, 22, 23, 24, 26, 27 on four layers is shown; only eight slots are shown. The pins are arranged in the slots. The pins are adjacent to each other in the slots; Figure 2 In the example, four pins are placed side by side in a slot. Therefore, the four pins within a slot lie on different concentric circles around the stator center point M, thus forming separate layers L1, L2, L3, L4. There is a distance 71 between two corresponding slots. This distance 71... Figure 2 All the slots shown are identical.

[0059] Figure 3 It shows Figure 2 Stator 1. The pins are still arranged on concentric circles, that is, on layers. For better illustration, the concentric circles are not depicted. Figure 3This shows which pins are connected in series with each other. The first pin 21 is located in the first slot 51 of layer L1. This first pin 51 is connected to the second pin 22 in slot 52 via a first connection type 61, as shown by the dashed line. The second pin 22 is located in layer L2. The second pin 22 is connected to the third pin 23 in slot 51 via a second connection type 62, as shown by the short dashed line. The third pin 23 is also located in the first slot 51, that is, in the same slot as the first pin 21. However, the third pin 23 is located in layer L4. Therefore, there is still space in slot 51 between the third pin 23 and the first pin 21 for two other pins. The third pin 23 is connected to the fourth pin 24 via a third connection type 63, as shown by the solid line. The fourth pin 24 is located in the same slot 52 as the second pin 22. The fourth pin 24 is located in layer L3, directly adjacent to the first pin 21. Therefore, there is still space in slot 52 for two other pins in layers L1 and L4 adjacent to the two pins 22 and 24. The series connection of the first, second, third and fourth pins forms the first winding 41.

[0060] The fourth pin 24 is connected via a fourth connection type 64 to the fifth pin 25 in layer L1 of the third slot 53, as shown by the dashed line. For the fifth pin 25, the aforementioned series connection of subsequent pins in the stator begins again; the fifth pin 25 is similar to the first pin 21, but the slot is offset by 90 degrees. The first pin 21 is connected via a fourth connection type 64 to a pin 27 similar to the fourth pin. Pin 27 is then connected via a third connection type 63 to a first end pin 26, which has an input 81, see [link to details]. Figure 12 .

[0061] The fifth pin 25 is connected in series with the other pins in slots 53 and 54 to form the second winding 42. The first, second, and third connection types 61, 62, and 63 between these pins are the same as the first, second, and third connection types 61, 62, and 63 of the pins of the first winding 41, respectively.

[0062] Two windings 41 and 42 are connected by a fourth connection type 64. The series connection continues to form a third winding 43 in slots 55 and 56. Windings 41, 42, 43, and 44 are each connected by a fourth connection type 64. Therefore, the fourth connection type 64 between each winding is the same. This also applies to the first, second, and third connection types 61, 62, and 63 between the pins of winding 43, which are the same as the first, second, and third connection types 61, 62, and 63 of the first and second windings 41 and 42.

[0063] The fourth winding 44 has special features and is formed at the beginning and end of the series connection of the three other coils. The first pin 21 of the first winding 41 is connected to the pin 28 in the slot 58 via a fourth connection type 64. The pin 27 is connected to the end pin 26 via a third connection type 63. After the loop and connection of windings 41, 42, and 43, according to Figure 3The pattern shown connects two more pins, and the last pin 28 is configured as the second end pin, thus completing part of the coil. These slots are spaced equidistant from each other by a distance 71.

[0064] Figure 4 It shows Figure 3 The stator 1 is shown, and eight slots 91, 92, 93, 94, 95, 96, 97, 98 are shown, these slots are located in Figure 3 The groove is right next to it.

[0065] Sales 31, 32, 33, 34, 35 and with Figure 3 Pins 21, 22, 23, 24, and 25 are connected in the same way. Even the connection type is the same as... Figure 3 Same as, and indicated by the same reference numerals. With Figure 3 In the same manner, windings 45, 46, 47, and 48 are formed and connected to each other clockwise via a fourth connection type 64. The first pin 31 is also the third end pin 31.

[0066] The fourth pin in slot 98 on layer L1 of winding 48 is the fourth end pin 38, and has an output 83 for connecting to the power source. The four windings 45, 46, 47, and 48 form the second part of the coil.

[0067] Figure 5 It shows crossing Figure 3 and Figure 4 The pin configuration of the first and second portion coils is shown by black squares. The same reference numerals in the figure indicate the same pins, slots, and connections. The second end pin 28 of the winding 44 of the first portion coil in slot 58 of layer L2 and the third end pin 31 of the first winding 45 in slot 91 of layer L3 are connected by a fifth connection type 65. Thus, after two radial loops in different directions around the stator, these two portion coils form a first coil having a first end pin 26 as an input 81 and a fourth end pin 38 as an output 83. Therefore, the end pins 26, 28, 31, and 38, marking the beginning and end of the portion coils respectively, can be seen.

[0068] Figure 6 It shows crossing Figure 3 and 4 The pin configuration of the first and second coil sections is shown by black squares. The same reference numerals in the figure indicate the same pins, slots, and connections. Furthermore, according to... Figure 3 and 4The other two partial coils of the principle are represented as black squares on a white background, but they are offset by 5 slots compared to the first coil, and form the second and third partial coils respectively. These two partial coils are connected between the sixth end pin 28a in slot 98 of layer L2 and the seventh end pin 31a in slot 57 of layer L3 via a seventh connection type 67, and form the second coil.

[0069] therefore, Figure 6 Two parallel coils are shown, each consisting of two partial coils. The inputs and outputs of the coils are also shown. The input 81 of the first coil is located in slot 57, and the output 83 is located in slot 98. The input 87 of the second coil is located in slot 91, and the output 85 is located in slot 58. Therefore, the inputs and outputs of the two coils are located in adjacent slots of either the outermost or innermost layer. The second radial distance 73 is, for example, one slot shorter than the first radial distance 71. Furthermore, the third radial distance 75 is one slot longer than the first radial distance.

[0070] Figure 7 The pin configuration passing through the third and fourth coils is shown, with black squares having white dots and white squares having black dots. This is achieved through... Figure 3 , 4 The winding pattern established in step 5 results in a winding pattern that is offset clockwise by two slots compared to the pins and connections shown in the later figures. The inputs 101 and 103 of the third coil and the inputs 107 and 105 of the fourth coil are also shown. Therefore, the inputs and outputs of the two coils are located in adjacent slots of either the outermost or innermost layer.

[0071] Figure 8 The pin configuration passing through the fifth and sixth coils is shown. This is achieved through... Figure 3 , 4 The winding pattern established in section 5 results in a winding pattern that is offset four slots clockwise compared to the pins and connections shown in the later diagrams.

[0072] The input 111 and output 113 of the fifth coil and the input 117 and output 115 of the sixth coil are also shown. Therefore, the inputs and outputs of the two coils are located in adjacent slots of the outermost or innermost layer.

[0073] Figure 9 It shows that Figure 6 , 7 The combination of 8 and 8 is arranged through the pin configuration of the six coils. Specifically, it can be seen from the positions of the inputs 81, 87, 101, 107, 111, 117 and the outputs 83, 85, 103, 105, 113, 115 that all inputs can be interconnected within one-eighth of the stator. Furthermore, all outputs can also be interconnected within one-eighth of the stator.

[0074] Figure 10Two coils 201 and 202 are shown, each consisting of two partial coils. The same reference numerals establish their relationship to other figures. For example, in... Figure 10 The connection between some coils and the connection between the corresponding coils and the inverter can be seen. Pin 26 of the first coil 201 forms the first end pin 26 and has an input 81. The series connection of the pins filled with black, indicated by solid arrows, almost completes a single radial loop around the stator and forms a first loop including the first portion of the coil. The first end pin 26 is located at the beginning of the first portion of the coil, and the second end pin 28 is located at the end.

[0075] The second section of the coil is formed by connecting pins with dashed arrows, as shown by the horizontal dashed line. This section of the coil begins at the third terminal pin 31 and ends at the fourth terminal pin 38. The fourth terminal pin 38 is connected to the inverter, for example, via output 83. A fifth connection type 65 is located between the second terminal pin 28 of the first section of the coil and the third terminal pin 31 of the second section of the coil. Figure 15 The diagram shows two end pins 31, 28 and a fifth connection type 65. The two loops of the first coil 201 occur in different directions, for example, first clockwise and then counterclockwise.

[0076] Pin 26a of the second coil 202 constitutes the fifth end pin 26a and has an input 87. The series connection of pins filled in black by solid arrows almost completes a single radial loop around the stator and forms a first loop, which includes the first portion of the coil of the second coil 202. The fifth end pin 26a is located at the beginning of the second portion of the coil, and the sixth end pin 28a is located at the end.

[0077] The second section of the coil is formed by connecting pins with dashed arrows, as shown by the horizontal dashed line. This section of the coil begins at the seventh pin 31a and ends at the eighth pin 38a. The eighth pin 38a is connected to the inverter, for example, via output 85. A seventh connection type 67 is located between the sixth pin 28a of the first section of the coil and the seventh pin 38a of the second section of the coil. Figure 16 Two end pins, 28a and 38a, and a seventh connection type, 67, are shown.

[0078] The looping direction of the two coils can be freely chosen, but they are in the same looping direction.

[0079] Figure 11 Single pin 219 or I-pin is shown. Actual pins 38, 38a, arranged in the stator slots, are centered. Reference numerals are the same as in the previous figures. Viewed from the stator center point, the pins are shown with an upward-facing first end face 7. Outputs 83, 85, 103, 105, 113, 115 are located at the top. Single pin 219 is used on layer 1 for the fourth or eighth end pin 38, 38a. At the bottom, the end pin has a pin foot 61a with a second weld point 223.

[0080] Figure 12 A single pin 220, or I-pin, is shown. The actual pins 26, 26a, arranged in the stator slots, are centered. The reference numerals are the same as in the previous figures. Viewed from the stator center point, the pin is shown with an upward-facing first end face 7. The single pin 220 is used on layer 4 for the first and fifth end pins 26, 26a. At the bottom end, the end pin has a pin foot 63a with a third weld point 225. Inputs 81, 87, 101, 107, 111, 117 are located at the top.

[0081] Figure 13 A first double pin 211 or U-shaped pin is shown, which establishes a connection type 62 between the second pins 22, 32 and the third pins 23, 33. The double pins can bridge a first distance 71 between the slots. At the bottom end, the double pin has two inwardly curved pin feet 63a, 61b, which have solder points 225, 221.

[0082] Figure 14 A second double pin 213 or U-pin is shown, which establishes a connection type 64 between pins 24, 34, 27 and pins 21, 25, 35. The double pin can bridge a first distance 71 between the slots. At the bottom end, the double pin has two outwardly curved pin feet 63b, 61a, which have solder points 227, 223.

[0083] The first distance 71 is the same only in terms of the number of slots to be bridged. The actual spatial distance to be bridged is different because the double pins connect different layers.

[0084] Figure 15 A third double pin 214, or U-pin, is shown, which establishes a connection type 65 between the second end pin 28 and the third end pin 31. The double pin can bridge a third distance 75, thus having one more slot than distance 71. At the bottom end, the double pin has two bent pin feet 63b, 61b, which have corresponding solder points 227, 221.

[0085] Figure 16 A fourth double pin 215, or U-pin, is shown, which establishes a connection type 67 between the sixth end pin 28a and the seventh end pin 31a. The double pin can bridge a second distance 73, thus requiring one less slot than distance 71. At the bottom end, the double pin has two bent pin feet 61b, 63b, which have corresponding solder points 221, 227.

[0086] Figures 11 to 16 The various single and double pins in the design have similar pin feet. According to... Figure 10 The winding pattern involves welding the welding points 221 and 223 at pins 61a and 61b together to form connection 61. According to... Figure 10 The winding pattern is formed by welding the welding points 225 and 227 at pins 63a and 63b together to form connection 63.

[0087] Therefore, the first connection type 61 is formed via pins 61a, 61b and solder points 221 and 223. Therefore, the third connection type 63 is formed via pins 63a, 63b and solder points 225 and 227.

[0088] Figure 17 This is a basic schematic diagram of an exemplary embodiment of vehicle 403, such as a hybrid vehicle or electric vehicle, including motor 401, particularly an electric motor, having an exemplary embodiment of a stator 1 for driving vehicle 403. Vehicle 403 may also include inverter 405, which supplies alternating current from a DC power source to motor 401.

[0089] List of reference numerals

[0090] 1 stator

[0091] 2,21,22,23,24,25 sales

[0092] 31, 32, 33, 34, 35

[0093] 5,51,52,53,54,55,56 slots

[0094] 57, 58, 91, 92, 93, 94, 95 slots

[0095] 96, 97, 98 slots

[0096] 7 First end face

[0097] 9 Second end face

[0098] 26,26a,28,28a,31,31a,38,38a end pins

[0099] 41-48 winding

[0100] 61 First Connection Type

[0101] 62 Second Connection Type

[0102] 63 Third Connection Type

[0103] 64 Fourth Connection Type

[0104] 65 Fifth Connection Type

[0105] 66. Sixth Connection Type

[0106] 67 Seventh Connection Type

[0107] 61a, 61b, 63a, 63b pins

[0108] 71 First Distance

[0109] 73 Second Distance

[0110] 75 third distance

[0111] 401 motor

[0112] Input 81,87,101,107,111,117

[0113] Outputs: 83, 85, 103, 105, 113, 115

[0114] 201 First Coil

[0115] 202 Second Coil

[0116] 211, 213, 214, 215 Double Sales

[0117] 219,220 single sales

[0118] Welding points 221, 223, 225, and 227

[0119] Vehicle 403

[0120] 405 Inverter

[0121] L1, L2, L3, L4 layers

[0122] M stator center point

Claims

1. A stator (1) for an electric motor (401), comprising: - Multiple pins (2, 21, 22, 23, 24, 25) are arranged on concentric circles at different distances from the stator center point (M) in slots (51, 52, 53, 54, 55, 56, 57, 58), and each concentric circle forms a layer (L1, L2, L3, L4). - The four pins (21, 22, 23, 24, 25) in different layers (L1, L2, L3, L4) are connected in series to form a winding (41). - The first pin (21) of the winding (41) is located in the first slot (51) of the 4n-3 layer (L1), where n is a natural number; - The second pin (22) of the winding (41) is located in the second slot (52) in the 4n-2 layer (L2), wherein the second slot (52) is a first radial distance (71) from the first slot (51) in the first circumferential direction of the stator (1); - The third pin (23) of the winding (41) is located in the first slot (51) in the 4n layer (L4); - The fourth pin (24) of the winding (41) is located in the second slot (52) in the 4n-1 layer (L3); The stator has at least two windings (41, 42, 43, 44), and at least a fourth pin (24) in the second slot (52, 54, 56) is connected to a fifth pin (25) in the 4n-3 layer (L1) of the third slot (53) via a fourth connection type (64). The stator (1) has a plurality of windings (41, 42, 43, 44) that extend over the entire circumference of the stator (1) to form partial coils; The corresponding pins (28, 31) of the two partial coils are connected to each other by a fifth connection type (65) to form coils (201, 202). The fifth connection type (65) includes a third double pin (214) formed by a second end pin (28) and a third end pin (31), wherein the third double pin (214) has two pin feet (63b, 61b) bent counterclockwise, the pin feet having corresponding weld points (227, 221), and the third double pin bridges a third radial distance (75).

2. The stator (1) according to claim 1, wherein, The stator (1) has a first end face (7) and a second end face (9); and - The first pin (21) and the second pin (22) are connected to each other on the second end face (9) by a first connection type (61); - The second pin (22) and the third pin (23) are connected to each other on the first end face (7) by a second connection type (62); - The third pin (23) and the fourth pin (24) are connected to each other on the second end face (9) by a third connection type (63); - The first connection type, the second connection type, and the third connection type are different from each other.

3. The stator (1) according to claim 1 or 2, wherein, The partial coils form six coils, and the six phases are allocated to the six coils in such a way that two coils assigned to different phases are respectively located in adjacent slots (51-58, 91-98).

4. The stator (1) according to claim 1 or 2, wherein, The corresponding inputs (81, 101, 111, 87, 107, 117) of the pins (26, 26a) of the two coils (201, 202) are interconnected by a sixth connection type (66).

5. The stator (1) according to claim 4, wherein, The corresponding outputs (83, 103, 113, 85, 105, 115) of the pins (38, 38a) of the two coils (201, 202) are interconnected, and the two coils (201, 202) are thus connected in parallel and are specifically assigned to one phase.

6. The stator (1) according to claim 2, wherein, The second connection type (62) includes a first double pin (211) formed by the second pin (22, 32) and the third pin (23, 33), wherein the first double pin (211) has two inwardly bent pin feet (61b, 63a) with corresponding weld points (221, 225), and the first double pin bridges a first radial distance (71).

7. The stator (1) according to claim 6, wherein, The fourth connection type (64) includes a second double pin (213) formed by the fourth pin (24, 27, 34) and the fifth pin (21, 25, 35), wherein the second double pin (213) has two outwardly curved pin feet (61a, 63b) with corresponding weld points (221, 227), and the second double pin bridges a first radial distance (71).

8. The stator (1) according to claim 7, wherein, The seventh connection type (67) includes a fourth double pin (215) formed by a sixth end pin (28a) and a seventh end pin (31a), wherein the fourth double pin (215) has two pin feet (63b, 61b) bent counterclockwise, and the fourth double pin bridges a second radial distance (73).

9. The stator (1) according to claim 8, wherein, The single pin (219, 220) includes a first end pin (26) or a fourth end pin (38) or a fifth end pin (26a) or an eighth end pin (38), and has pin feet (61a, 63a) that are bent clockwise and have welded points (223, 225).

10. The stator (1) according to claim 9, wherein, The first connection type (61) is formed by a welded connection between a first weld point (221) at the pin foot (61b) of a first double pin (211), a third double pin (214), or a fourth double pin (215) and a second weld point (223) at the pin foot (61a) of a second double pin (213) or a single pin (219).

11. The stator (1) according to claim 9, wherein, The third connection type (63) is formed by a welded connection between a third weld point (225) at the pin foot (63a) of the first double pin (211) or single pin (220) and a fourth weld point (227) at the pin foot (63b) of the second double pin (213) or third double pin (214) or fourth double pin (215).

12. A vehicle (403) having an electric motor (401) having a stator (1) according to any one of the preceding claims.

Images