Stator assembly, electric machine and vehicle

Abstract

The utility model provides a kind of stator assembly, motor and vehicle, stator assembly includes stator subassembly and electric component, stator subassembly has preset phase type and includes multiple-phase winding, and each phase winding includes multiple winding phase lines;Electric component includes star point connecting piece, conflux unit and bridging unit;Star point connecting piece includes electrically conductive star point conducting part and end connecting part of connection, end connecting part is configured according to preset phase type;Conflux unit includes first end connecting piece configured according to preset phase type;Bridging unit includes intermediate connecting piece configured according to preset phase type;Wherein, intermediate connecting piece and end connecting part, first end connecting piece are mutually dielectric setting;Each phase intermediate connecting piece connects multiple winding phase lines of same phase type into at least one series branch;Each phase end connecting part connects the end of series branch of same phase type;Each phase first end connecting piece connects the first end of series branch of same phase type.

Description

Technical Field

[0001] This utility model relates to the field of electric drive technology for vehicles, and in particular to a stator assembly, a motor, and a vehicle. Background Technology

[0002] New energy vehicles have various operating voltage standards for their electrical systems, with the mainstream operating voltage standards including 400V and 800V.

[0003] The number of branches in a motor varies depending on the operating voltage standard. Currently, motors used on 400V and 800V voltage platforms cannot use the same stator assembly and be produced on the same production line. They require separate stator assembly design and separate production lines for each type of motor. Utility Model Content

[0004] In view of this, the present invention provides a stator assembly, a motor and a vehicle to achieve universality of stator components under different voltage platforms.

[0005] The first aspect of this utility model provides a stator assembly, the stator assembly including a stator component and a conductive component, the stator component having a preset phase pattern and including multi-phase windings, each phase winding including multiple wound phase wires; the conductive component includes:

[0006] A star-point connector includes a star-point conductive part and an end connection part that are electrically connected, and the end connection part is configured according to a preset phase pattern.

[0007] The bridging unit includes intermediate connectors configured according to a preset phase pattern;

[0008] The bus unit includes a head connector configured according to a preset phase pattern;

[0009] in:

[0010] The intermediate connector, the end connector, and the first connector are dielectrically connected to each other; each phase intermediate connector connects multiple wound phase lines of the same phase type in series to form at least one series branch; each phase end connector connects to the end of the series branch of the same phase type; each phase first connector connects to the first end of the series branch of the same phase type.

[0011] The second aspect of this utility model provides an electric motor, which includes a rotor assembly and any stator assembly provided in the first aspect of this utility model. The stator assembly further includes a stator core with multi-phase windings, and the rotor assembly and the stator core are rotatably arranged relative to each other.

[0012] The third aspect of this utility model provides a vehicle, which includes any of the motors provided in the second aspect of this utility model.

[0013] The beneficial effects of this utility model are:

[0014] By connecting multiple wound phase wires of the same phase type in series through intermediate connectors in each phase, the number of branches in each phase is reduced compared to the number of wound phase wires, thus obtaining a motor with fewer branches. Therefore, the stator assembly can be used in stator assemblies and motors where each phase contains many branches and the number of branches is equal to the number of wound phase wires, or it can be combined with conductive components to be used in stator assemblies and motors where each phase contains fewer branches. This breaks through the limitation that the number of branches in each phase is equal to the number of wound phase wires, and ultimately realizes the universality of the stator assembly across different voltage platforms. Attached Figure Description

[0015] Figure 1 This is a simplified structural diagram of the stator assembly according to Embodiment 1 of this utility model;

[0016] Figure 2 This is a simplified structural diagram of the stator assembly according to Embodiment 2 of this utility model;

[0017] Figure 3 This is a simplified structural diagram of the stator assembly according to Embodiment 3 of this utility model;

[0018] Figure 4 This is an exploded view of a portion of the stator assembly according to Embodiment 4 of this utility model;

[0019] Figure 5 This is an exploded view of a portion of the stator assembly according to Embodiment 5 of this utility model;

[0020] Figure 6 This is a schematic diagram of the stator assembly of the stator assembly according to Embodiment 4 of this utility model;

[0021] Figure 7 for Figure 6 A partially enlarged view of the stator assembly shown;

[0022] Figure 8 This is a schematic diagram of the stator assembly according to Embodiment 4 of this utility model;

[0023] Figure 9 for Figure 8 A partially enlarged view of the stator assembly shown;

[0024] Figure 10 This is a partial structural schematic diagram of the stator assembly in Embodiment 5;

[0025] Figure 11 for Figure 10 The image shows a partial enlarged view of the stator assembly at point A.

[0026] Figure 12 for Figure 10 The image shows a partial enlarged view of the stator assembly at point B.

[0027] Figure 13 This is a partially enlarged view of the stator assembly in Example 5;

[0028] Figure 14 These are the winding wiring diagrams of the stator assemblies in Embodiments 4 and 5 of this utility model;

[0029] Figure 15 This is a branch wiring diagram of the stator assembly in Embodiments 4 and 5 of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Conductive component; 10. Star-shaped connector; 11. End connector; 12. Star-shaped conductive part;

[0032] 20. Intermediate connector; 21. Phase line bridge; 211. Torque bar; 2111. Front section; 2112. Middle section; 2113. Rear section; 212. First welding end; 213. Second welding end;

[0033] 30. Head connector; 31. Input terminal;

[0034] 40. Insulating support; 41. First insulating part; 42. First clamping part; 43. Second clamping part; 44. Settling groove;

[0035] 500. Stator assembly; 510. Stator core; 511. Yoke; 520a. U-phase winding; 520b. V-phase winding; 520c. W-phase winding;

[0036] 5211, First terminal; 5212, Second terminal;

[0037] 5221, Third terminal; 5222, Fourth terminal;

[0038] 5231, Fifth terminal; 5232, Sixth terminal;

[0039] 5241, Seventh terminal; 5242, Eighth terminal;

[0040] 5251, Ninth terminal; 5252, Tenth terminal;

[0041] 5261, eleventh terminal; 5262, twelfth terminal. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] This utility model first provides a stator assembly, please refer to it as well. Figures 1-3 , Figure 1 This is a simplified structural diagram of the stator assembly according to Embodiment 1 of this utility model; Figure 2 This is a simplified structural diagram of the stator assembly according to Embodiment 2 of this utility model; Figure 3 This is a simplified structural diagram of the stator assembly in Embodiment 3 of this utility model; in addition, a motor including a stator assembly is also provided. Besides the stator assembly, the motor also includes a rotor assembly. The stator assembly also includes a stator core with multi-phase windings. The rotor assembly and the stator core are rotatably arranged relative to each other. Finally, this utility model provides a vehicle including a motor.

[0045] The stator assembly includes a stator component 500 and a conductive component 100. The stator component 500 has a preset phase configuration, which can be two-phase, three-phase, four-phase, five-phase, or even more phases. When the preset phase configuration is three-phase, the three phases are U-phase, V-phase, and W-phase, and the three phases are connected in a star configuration, with a 120° phase difference between any two phases. For ease of explanation, the following description uses a three-phase motor with a preset phase configuration and a star-connected stator assembly as an example.

[0046] The stator assembly 500 includes multi-phase windings configured according to a preset phase pattern. When the preset phase pattern of the stator assembly 500 is three-phase, the multi-phase windings are divided into U-phase windings, V-phase windings and W-phase windings. Each phase winding includes multiple wound phase lines, and each phase winding has an equal number of wound phase lines. In addition, the stator assembly 500 also includes a stator core 510 with a hollow columnar structure. The inner wall of the stator core 510 is provided with teeth for each phase winding to be wound. The end of the stator core 510 forms a circular yoke 511.

[0047] See Figures 1-3 , Figures 8-10The conductive component 100 includes a star point connector 10, which serves as a star point in the wiring diagram of a three-phase winding connected by a star connection. The star point connector 10 includes a conductive part 12 and an end connection part 11. The end connection part 11 is configured according to a preset phase type. When the preset phase type of the stator assembly 500 is three-phase, the end connection part 11 is divided into a U-phase end connection part 11, a V-phase end connection part 11, and a W-phase end connection part 11.

[0048] Optionally, the end connection portion 11 of the three phase types is a conductive structure with the same configuration. See reference. Figures 1-3 , Figures 8-10 The end connection portions 11 corresponding to all phases are arranged in an arc-shaped queue along the circumference of the stator assembly 500. The star point conductive portion 12 and all end connection portions 11 are integrally formed. The star point conductive portion 12 has an arc-shaped structure and extends along the circumference of the stator assembly 500.

[0049] The conductive component 100 also includes a bridging unit, which includes intermediate connectors 20 configured according to a preset phase type. When the preset phase type of the stator assembly 500 is three-phase, the intermediate connectors 20 are divided into U-phase intermediate connectors 20, V-phase intermediate connectors 20 and W-phase intermediate connectors 20.

[0050] Optionally, see Figures 1-3 , Figures 8-10 The three types of intermediate connectors 20 are conductive structures with the same configuration. The intermediate connectors 20 corresponding to all phases are arranged in an arc shape along the circumference of the stator assembly 500 on the yoke of the stator core 510.

[0051] The conductive component 100 also includes a busbar unit for connecting to a power source to obtain the electrical energy required to operate the motor, including a head connector 30 configured according to a preset phase type. When the preset phase type of the stator assembly 500 is three-phase, the head connector 30 is divided into a U-phase head connector 30, a V-phase head connector 30, and a W-phase head connector 30.

[0052] Optionally, see Figures 1-3 , Figures 8-10 The first-end connectors 30 corresponding to all phases are arranged in an arc shape along the circumference of the stator assembly 500 on the yoke 511 of the stator core 510.

[0053] See Figures 8-10 The star-point connector 10, the busbar unit, and the bridging unit are all located at the end of the stator core 510 that is relatively far from the winding crown end.

[0054] The intermediate connector 20 is dielectrically connected to the end connector 11, and the intermediate connector 20 is also dielectrically connected to the beginning connector 30. Dielectric connection means that there is an electrical isolation gap or dielectric spacer between two dielectrically connected conductors, preventing current from flowing directly from one conductor to the other. For example, when the first and second conductors are dielectrically connected, and the third conductor connects the first and second conductors, current flows from the first conductor to the third conductor and then to the second conductor; or, current flows from the second conductor to the third conductor and then to the first conductor.

[0055] Each phase intermediate connector 20 connects multiple wound phase wires of the same phase type in series to form at least one series branch. Each phase end connector 11 connects to the end of the series branch of the same phase type, and each phase beginning connector 30 connects to the beginning of the series branch of the same phase type. In the case where the preset phase type is three-phase, the U-phase intermediate connector 20 connects multiple U-phase wound phase wires in series to form at least one U-phase series branch, the V-phase intermediate connector 20 connects multiple V-phase wound phase wires in series to form at least one V-phase series branch, and the W-phase intermediate connector 20 connects multiple W-phase wound phase wires in series to form at least one W-phase series branch. Finally, the number of branches in the U-phase series branch is less than the number of U-phase wound phase wires, the number of branches in the V-phase series branch is less than the number of V-phase wound phase wires, and the number of branches in the W-phase series branch is less than the number of W-phase wound phase wires.

[0056] When the first-end connector 30 is electrically connected to the power supply, the current of each phase first flows into the same-phase series branch through the same-phase first-end connector 30, then into the same-phase intermediate connector 20, and finally into the star point conductive part 12 through the same-phase end connector 11.

[0057] With this configuration, the intermediate connector 20 and the end connector 11 are dielectrically connected, and the intermediate connector 20 and the first connector 30 are dielectrically connected. This can prevent current from flowing directly from the first connector 30 through the series branch into the star connector 10, thus preventing the series branch of each phase from being short-circuited.

[0058] The following detailed description, in conjunction with the accompanying drawings, describes different embodiments.

[0059] Example 1

[0060] like Figure 1As shown, the stator assembly 500 includes three-phase windings, each of which includes three wound phase lines. U1 and X1 represent the two ends of the first U-phase phase line in the U-phase winding 520a, U2 and X2 represent the two ends of the second U-phase phase line in the U-phase winding 520a, and U3 and X3 represent the two ends of the third U-phase phase line in the U-phase winding 520a. Each phase intermediate connector 20 includes two phase line bridges 21. Taking the U-phase intermediate connector 20 as the analysis object, the two ends of the first phase line bridge 21 are connected to X1 and U2 respectively, and the second phase... The two ends of the line bridge 21 are connected to X2 and U3 respectively. Therefore, the first U-phase line and the second U-phase line are connected in series through the first phase line bridge 21 of the U-phase intermediate connector 20, and the second U-phase line and the third U-phase line are connected in series through the second phase line bridge 21 of the U-phase intermediate connector 20. There is one end connection part 11 for each phase, and each phase start-up connector 30 includes an input terminal 31. Taking the U-phase as an example, the U-phase end connection part 11 is electrically connected to X3, and U1 is electrically connected to the input terminal 31 of the U-phase start-up connector 30.

[0061] Since the U-phase winding 520a, V-phase winding 520b and W-phase winding 520c are equivalent, and each phase branch is formed by connecting each phase winding with the end connection 11, intermediate connection 20 and beginning connection 30 of the same phase type, the connection method between V-phase intermediate connection 20 and V-phase winding 520b and the connection method between W-phase intermediate connection 20 and W-phase winding 520c can refer to the connection method between U-phase intermediate connection 20 and U-phase winding 520a mentioned above, and will not be repeated here.

[0062] In Embodiment 1, the U-phase intermediate connector 20 connects the three U-phase windings of the U-phase winding 520a in series to form a U-phase series branch, with the first end of the U-phase series branch being U1 and the last end being X3; the V-phase intermediate connector 20 connects the three V-phase windings of the V-phase winding 520b in series to form a V-phase series branch, with the first end of the V-phase series branch being V1 and the last end being Y3; the W-phase intermediate connector 20 connects the three W-phase windings of the W-phase winding 520c in series to form a W-phase series branch, with the first end of the W-phase series branch being W1 and the last end being Z3. Figure 1 The stator assembly shown is used for a single-branch motor.

[0063] To add further explanation, Figure 1 The stator assembly 500 shown can also be used in a three-phase motor, taking the U-phase as an example, when Figure 1 When the stator assembly 500 is used in a three-branch motor, the first, second, and third U-phase phase lines each serve as a U-phase branch, resulting in three branches for each phase. The U-phase current is input from U1, U2, and U3 respectively, and the current from the three U-phase branches flows out from X1, X2, and X3 respectively. Finally, the three U-phase branches converge at the star point. The number of branches per phase varies for motors with different voltage platforms.

[0064] Example 2

[0065] like Figure 2 As shown, the stator assembly 500 includes three-phase windings, each phase winding including four wound phase lines. U1 and X1 represent the two ends of the first U-phase phase line in the U-phase winding 520a, U2 and X2 represent the two ends of the second U-phase phase line in the U-phase winding 520a, U3 and X3 represent the two ends of the third U-phase phase line in the U-phase winding 520a, and U4 and X4 represent the two ends of the fourth U-phase phase line in the U-phase winding 520a. Each phase intermediate connector 20 includes three phase line bridges 21. Taking the U-phase intermediate connector 20 as the analysis object, the two ends of the first phase line bridge 21 are connected to X1 and U2 respectively, and the two ends of the second phase line bridge 21 are connected to X2 and U2 respectively. U3, the two ends of the third phase line bridge 21 are connected to X3 and U4 respectively. Therefore, the first U phase line and the second U phase line are connected in series through the first phase line bridge 21 of the U phase intermediate connector 20, the second U phase line and the third U phase line are connected in series through the second phase line bridge 21 of the U phase intermediate connector 20, and the third U phase line and the fourth U phase line are connected in series through the third phase line bridge 21 of the U phase intermediate connector 20. The number of end connection parts 11 for each phase is one, and the first end connection part 30 for each phase includes an input terminal 31. Taking U phase as an example, the end connection part 11 of U phase is electrically connected to X4, and U1 is electrically connected to the input terminal 31 of the first end connection part 30 of U phase.

[0066] Since the U-phase winding 520a, V-phase winding 520b and W-phase winding 520c are equivalent, and each phase branch is formed by connecting each phase winding with the end connection 11, intermediate connection 20 and beginning connection 30 of the same phase type, the connection method between V-phase intermediate connection 20 and V-phase winding 520b and the connection method between W-phase intermediate connection 20 and W-phase winding 520c can refer to the connection method between U-phase intermediate connection 20 and U-phase winding 520a mentioned above, and will not be repeated here.

[0067] In Embodiment 2, the U-phase intermediate connector 20 connects the four U-phase windings of the U-phase winding 520a in series to form a U-phase series branch, with the first end of the U-phase series branch being U1 and the last end being X4; the V-phase intermediate connector 20 connects the four V-phase windings of the V-phase winding 520b in series to form a V-phase series branch, with the first end of the V-phase series branch being V1 and the last end being Y4; the W-phase intermediate connector 20 connects the four W-phase windings of the W-phase winding 520c in series to form a W-phase series branch, with the first end of the W-phase series branch being W1 and the last end being Z4. Figure 2 The stator assembly shown is used for a single-branch motor.

[0068] To add further explanation, Figure 2 The stator assembly 500 shown can also be used in a four-branch motor, taking the U-phase as an example, when Figure 2 When the stator assembly 500 is used in a four-branch motor, the first U-phase line, the second U-phase line, the third U-phase line, and the fourth U-phase line each serve as a U-phase branch, so each phase has four branches. The U-phase current is input from U1, U2, U3, and U4 respectively, and the current of the four U-phase branches flows out from X1, X2, X3, and X4 respectively. Finally, the four U-phase branches converge at the star point.

[0069] Example 3

[0070] like Figure 3 As shown, the stator assembly 500 includes three-phase windings, each of which includes four wound phase lines. U1 and X1 represent the two ends of the first U-phase phase line in the U-phase winding 520a, U2 and X2 represent the two ends of the second U-phase phase line in the U-phase winding 520a, U3 and X3 represent the two ends of the third U-phase phase line in the U-phase winding 520a, and U4 and X4 represent the two ends of the fourth U-phase phase line in the U-phase winding 520a. Each phase intermediate connector 20 includes two phase line bridges 21. Taking the U-phase intermediate connector 20 as the analysis object, the two ends of the first phase line bridge 21 are connected to X1 and U2 respectively, and the two ends of the second phase line bridge 21 are connected to X3 and U4 respectively. Therefore, the first U-phase... The first phase U-phase line and the second phase U-phase line are connected in series through the first phase line bridge 21 of the U-phase intermediate connector 20 to form the first U-phase series branch. The third phase U-phase line and the fourth phase U-phase line are connected in series through the second phase line bridge 21 of the U-phase intermediate connector 20 to form the second U-phase series branch. There are two end connection parts 11 for each phase. The first end connection part 30 for each phase includes two input terminals 31. Taking the U-phase as an example, the first input terminal 31 of the U-phase first end connection part 30 is electrically connected to U1, and the first end connection part 11 corresponding to the U-phase is electrically connected to X2. The second input terminal 31 of the U-phase first end connection part 30 is electrically connected to U3, and the second end connection part 11 corresponding to the U-phase is electrically connected to X4.

[0071] Since the U-phase winding 520a, V-phase winding 520b and W-phase winding 520c are equivalent, and each phase branch is formed by connecting each phase winding with the end connection 11, intermediate connection 20 and beginning connection 30 of the same phase type, the connection method between V-phase intermediate connection 20 and V-phase winding 520b and the connection method between W-phase intermediate connection 20 and W-phase winding 520c can refer to the connection method between U-phase intermediate connection 20 and U-phase winding 520a mentioned above, and will not be repeated here.

[0072] In Embodiment 3, the U-phase intermediate connector 20 connects the four U-phase windings of the U-phase winding 520a in series to form two parallel U-phase series branches, namely, the first U-phase series branch and the second U-phase series branch are connected in parallel. The beginning and end points of the first U-phase series branch are U1 and X2, respectively, and the beginning and end points of the second U-phase series branch are U3 and X4, respectively. The V-phase intermediate connector 20 connects the four V-phase windings of the V-phase winding 520b in series to form two parallel V-phase series branches, namely, the first V-phase series branch... The first and second V-phase series branches are connected in parallel. The beginning and end of the first V-phase series branch are V1 and Y2, respectively, and the beginning and end of the second V-phase series branch are V3 and Y4, respectively. The intermediate connector 20 of the W-phase winding 520c connects the four W-phase windings in series into two parallel W-phase series branches, namely the first W-phase series branch and the second W-phase series branch are connected in parallel. The beginning and end of the first W-phase series branch are W1 and Z2, respectively, and the beginning and end of the second W-phase series branch are W3 and Z4, respectively. Figure 3 The stator assembly is used for two-branch motors.

[0073] To add further explanation, Figure 3 The stator assembly 500 shown can also be used in a four-branch motor, taking the U-phase as an example, when Figure 3 When the stator assembly 500 is used in a four-branch motor, the first U-phase line, the second U-phase line, the third U-phase line, and the fourth U-phase line each serve as a U-phase branch, so each phase has four branches. The U-phase current is input from U1, U2, U3, and U4 respectively, and the current of the four U-phase branches flows out from X1, X2, X3, and X4 respectively. Finally, the four U-phase branches converge at the star point.

[0074] The following is a summary of the series connection rules for conductive component 100 and stator component 500:

[0075] ① When each phase winding in the stator assembly 500 includes an odd number of wound phase lines, the number of end connection parts 11 adapted to each phase is one, the start end connection part 30 adapted to each phase includes an input end 31, the end connection part 11 adapted to each phase is connected to the end of the series branch of the same phase, the input end 31 adapted to each phase is connected to the start end of the series branch of the same phase, and the intermediate connection part 20 of each phase connects all the wound phase lines of the same phase in series to form a series branch, thereby obtaining a stator assembly suitable for a single branch motor;

[0076] ② When each phase winding in the stator assembly 500 includes an even number of wound phase lines, the number of end connection parts 11 adapted to each phase is one, and the start end connection part 30 adapted to each phase includes an input end 31. The end connection part 11 adapted to each phase is connected to the end of the series branch of the same phase type, and the input end 31 adapted to each phase is connected to the start end of the series branch of the same phase type. The intermediate connection part 20 of each phase can connect all the wound phase lines of the same phase type in series into a series branch in sequence, thereby obtaining a stator assembly suitable for a single branch motor.

[0077] ③ When each phase winding in the stator assembly 500 includes an even number of wound phase lines, multiple wound phase lines in each phase, spaced at predetermined intervals, are connected in series by intermediate connectors 20 of the same phase type to form a series branch. All wound phase lines in each phase form multiple series branches corresponding to that phase type. These multiple series branches corresponding to the same phase type are connected in parallel to each other, and in each of the multiple series branches of each phase type, each series branch has the same number of wound phase lines. Figure 3 Taking the stator assembly shown as an example, in the U-phase winding 520a, every two wound phase lines are connected in series by the U-phase intermediate connector 20 to form a U-phase series branch. The four wound phase lines of the U-phase winding 520a form a total of two U-phase series branches. These two U-phase series branches are connected in parallel, and each of these two U-phase series branches has two wound phase lines.

[0078] Example 4

[0079] See Figures 6-7 , Figure 14 The stator assembly 500 of the stator assembly includes three-phase windings, each phase winding including two wound phase wires. Figure 14 It indicated Figure 6 and Figure 7 The winding connection method of the stator assembly 500 is shown; see reference. Figure 4 The conductive component 100 is used to connect the wound phase wires of each phase in series to form a series branch corresponding to that phase type. Figure 4 The conductive component 100 shown and Figures 6-7 The stator assembly 500 shown above, when combined, ultimately results in the following: Figures 8-9 The stator assembly shown is used in a single-branch motor for a new energy vehicle with an 800V voltage platform.

[0080] Figure 4 The conductive component 100 shown is designed for a two-branch stator assembly 500 with a preset phase configuration of three phases. The two branches refer to the stator assembly 500 where each phase winding includes two wound phase wires. For example... Figures 6-7 As shown, the stator assembly 500 includes a U-phase winding 520a, a V-phase winding 520b, and a W-phase winding 520c. Each phase winding includes two wound phase lines, wherein:

[0081] The two winding phase lines in the U-phase winding 520a are the first U-phase phase line and the second U-phase phase line, respectively. The two ends of the first U-phase phase line are the first terminal 5211 and the second terminal 5212, respectively. The two ends of the second U-phase phase line are the third terminal 5221 and the fourth terminal 5222, respectively.

[0082] The two winding phase lines in the V-phase winding 520b are the first V-phase phase line and the second V-phase phase line, respectively. The two ends of the first V-phase phase line are the fifth terminal 5231 and the sixth terminal 5232, respectively, and the two ends of the second V-phase phase line are the seventh terminal 5241 and the eighth terminal 5242, respectively.

[0083] The two winding phase lines in the W-phase winding 520c are the first W-phase phase line and the second W-phase phase line, respectively. The two ends of the first W-phase phase line are the ninth terminal 5251 and the tenth terminal 5252, respectively, and the two ends of the second W-phase phase line are the eleventh terminal 5261 and the twelfth terminal 5262, respectively.

[0084] The first terminal 5211, the second terminal 5212, the third terminal 5213, ..., up to the twelfth terminal 5262 all protrude from the end of the stator core 510 that is relatively far from the winding crown end.

[0085] like Figure 4 As shown, there is one end connection 11 for each phase, one beginning connection 30 for each phase includes one input terminal 31, and one intermediate connection 20 for each phase includes one phase line bridge 21, wherein:

[0086] like Figures 8-9 As shown, the first end connector 30 corresponding to phase U is connected to the first terminal 5211 through its input terminal 31, the end connector 11 corresponding to phase U is connected to the fourth terminal 5222, the phase line bridge 21 corresponding to phase U is connected to the second terminal 5212 and the third terminal 5221, the first phase line and the second phase line of phase U are connected in series to form a series branch, and the phase U current passes through the input terminal 31, the first phase line of phase U, the phase line bridge 21, the second phase line of phase U and the star point connector 10 in sequence;

[0087] Similarly, the first end connector 30 corresponding to phase V is connected to the fifth terminal 5231 through the input terminal 31, the last end connector 11 corresponding to phase V is connected to the eighth terminal 5242, the phase line bridge 21 corresponding to phase V is connected to the sixth terminal 5232 and the seventh terminal 5241, the first phase line and the second phase line of phase V are connected in series to form a series branch, and the phase V current passes through the input terminal 31, the first phase line of phase V, the phase line bridge 21, the second phase line of phase V and the star point connector 10 in sequence;

[0088] Similarly, the first end connector 30 corresponding to phase W is connected to the ninth terminal 5251 via the input terminal 31, the last end connector 11 corresponding to phase W is connected to the twelfth terminal 5262, the phase line bridge 21 corresponding to phase W is connected to the tenth terminal 5252 and the eleventh terminal 5261, the first phase line and the second phase line of phase W are connected in series to form a series branch, and the phase current of phase W passes through the input terminal 31, the first phase line of phase W, the phase line bridge 21, the second phase line of phase W and the star point connector 10 in sequence.

[0089] Furthermore, each phase conductor bridge 21 includes a twist bar 211, a first welding end 212, and a second welding end 213. The twist bar 211 includes a front section 2111, a middle section 2112, and a rear section 2113. The first welding end 212 is located in the front section 2111, and the second welding end 213 is located in the rear section 2113. (See reference...) Figures 4-5 See also Figures 10-11 Taking the phase line bridge 21 corresponding to phase U as an example, the first welding end 212 and the second terminal 5212 are welded together to achieve a conductive connection between the phase line bridge 21 and the first phase U phase line. The second welding end 213 and the third terminal 5221 are welded together to achieve a conductive connection between the phase line bridge 21 and the second phase U phase line. The front section 2111 and the rear section 2113 are respectively connected to the two ends of the middle section 2112. They are bent in opposite directions relative to the middle section 2112 and form two avoidance concave angles. The avoidance concave angles avoid the terminals of the wound phase lines in the same phase winding to prevent the wound phase lines from being short-circuited.

[0090] See again Figures 4-5 , Figures 8-11 The phase line bridges 21 corresponding to phase U, phase V, and phase W have the same shape. This configuration allows for the use of universal molds and reduces processing costs for the phase line bridges 21 of the intermediate connectors 20 for each phase.

[0091] Taking the phase line bridge 21 corresponding to phase U as an example, the twist bar 211, the first welding end 212 and the second welding end 213 are integrally formed. A first avoidance concave angle is formed between the front section 2111 and the middle section 2112. The first avoidance concave angle is used to avoid the first terminal 5211 and the input terminal 31. A second avoidance concave angle is formed between the rear section 2113 and the middle section 2112. The second avoidance concave angle is used to avoid the fourth terminal 5222 and the end connection part 11.

[0092] With this configuration, there is a sufficient dielectric gap between the phase line bridge 21 and the input terminal 31 of the U phase to prevent creepage, and there is a sufficient dielectric gap between the phase line bridge 21 and the end connection 11 of the U phase to prevent creepage. Therefore, neither of the two wound phase lines in the U phase winding 520a will be short-circuited. Similarly, there is a sufficient dielectric gap between the phase line bridge 21 and the input terminal 31 of the V phase, and there is a sufficient dielectric gap between the phase line bridge 21 and the end connection 11 of the V phase. Therefore, neither of the two wound phase lines in the V phase winding 520b will be short-circuited. Similarly, there is a sufficient dielectric gap between the phase line bridge 21 and the input terminal 31 of the W phase, and there is a sufficient dielectric gap between the phase line bridge 21 and the end connection 11 of the W phase. Therefore, neither of the two wound phase lines in the W phase winding 520c will be short-circuited.

[0093] To add further explanation, Figures 6-7 The stator assembly 500 shown can also be used for two-branch motors in new energy vehicles with a 400V voltage platform. Taking the U-phase as an example, when... Figures 6-7 When the stator assembly 500 is used for a two-branch motor with a 400V voltage platform, the first U-phase line and the second U-phase line each serve as a U-phase branch, so each phase has two branches. The U-phase current is input from the first terminal 5211 and the third terminal 5221, respectively, and the current of the two U-phase branches flows out from the second terminal 5212 and the fourth terminal 5222, respectively. Finally, the two U-phase branches converge at the star point.

[0094] pass Figure 4 The conductive component 100 shown and Figures 6-7 The two-branch stator assembly 500 shown can be combined to enable the co-production of two-branch motors on a 400V voltage platform and single-branch motors on an 800V voltage platform, and to share the same two-branch stator assembly 500. This helps to simplify the design workload of the stator assembly 500, reduce the layout cost of the production line and the production cost of the motor.

[0095] Example 5

[0096] Based on the stator assembly of Embodiment 4, the stator assembly of Embodiment 5 further includes an insulating support 40. The insulating support is configured according to a preset phase type. When the preset phase type of the stator assembly 500 is three-phase, the insulating support 40 is divided into a U-phase insulating support 40, a V-phase insulating support 40, and a W-phase insulating support 40. The insulating supports 40 of the three phase types are insulating components with the same configuration. Each phase insulating support 40 fixes the end connection part 11 and the intermediate connection part 20 of the same phase type. With this configuration, the positioning difficulty of the phase line bridge 21 is reduced when welding the intermediate connection part 20 and the end connection part 11, reducing the use of positioning fixtures. The insulating support 40 can replace the positioning fixtures to position the phase line bridge 21.

[0097] Except for the insulating support 40, the stator assembly of Embodiment 5 shares the same features as the stator assembly of Embodiment 4. Figure 4 The conductive component 100 shown and as Figures 6-7 The stator assembly 500 is shown. Figure 15 The diagram illustrates the branch wiring configuration of the stator assembly in Embodiments 4 and 5.

[0098] Further, see Figure 5 , Figure 10 Each phase insulation bracket 40 includes at least a first insulating portion 41. Each phase insulation bracket 40 physically separates the same-phase end connection portion 11 from the intermediate connection member 20 through its first insulating portion 41, thereby achieving electrical isolation. To clearly illustrate the purpose of the first insulating portion 41, Figure 10 The insulating bracket 40 corresponding to the U phase is hidden, while the insulating bracket 40 corresponding to the V phase is retained. It can be understood that without the insulating bracket 40, creepage is likely to occur between the end connection 11 corresponding to the U phase and the second welding end 213 of the phase line bridge 21, while creepage is not likely to occur between the end connection 11 corresponding to the V phase and the second welding end 213 of the phase line bridge 21.

[0099] Each phase insulation bracket 40 also includes a first clamping part 42 and a second clamping part 43. Each phase insulation bracket 40 securely clamps the same-phase intermediate connector 20 via the first clamping part 42 and securely clamps the same-phase end connector 11 via the second clamping part 43. (See reference...) Figure 12 Taking the insulating support 40 and winding corresponding to phase V as an example, the first clamping part 42 is located on one side of the first insulating part 41 and fixes the second welding end 213 of the phase line bridge 21 corresponding to phase V, and the second clamping part 43 is located on the other side of the first insulating part 41 and fixes the end connection part 11 corresponding to phase V. Similarly, the first clamping part 42 corresponding to phase U fixes the second welding end 213 of the phase line bridge 21 corresponding to phase U, and the second clamping part 43 corresponding to phase U fixes the end connection part 11 corresponding to phase U; similarly, the first clamping part 42 corresponding to phase W fixes the second welding end 213 of the phase line bridge 21 corresponding to phase W, and the second clamping part 43 corresponding to phase W fixes the end connection part 11 corresponding to phase W.

[0100] Furthermore, in each phase insulation support 40, the side of the first clamping part 42 opposite to the yoke part 511 is recessed into the yoke part 511 to form a countersunk groove, and the side of the second clamping part 43 opposite to the yoke part 511 is also recessed into the yoke part 511 to form a countersunk groove 44. (See also...) Figure 10 , Figures 12-13Taking the insulating bracket 40 and intermediate connector 20 corresponding to phase U as an example, the first welding end 212 and the second welding end 213 are respectively bent and connected to the two ends of the twisted bar 211. The two ends of the twisted bar 211 are the end of the front section 2111 and the end of the rear section 2113, respectively. The first welding end 212 and the second welding end 213 protrude from the side of the twisted bar 211 opposite to the yoke 511, forming an adaptation space between them. A part of the first clamping part 42 and a part of the second clamping part 43 are located in this adaptation space. When both a part of the first clamping part 42 and a part of the second clamping part 43 are located in the adaptation space, the first insulating part 41 physically isolates the second welding end 213 and the end connecting part 11, and electrically isolates the second welding end 213 and the end connecting part 11.

[0101] The first clamping part 42 corresponding to the U phase is fixedly clamped to the second welding end 213 corresponding to the U phase. The third terminal 5221 and the second welding end 213 corresponding to the U phase both protrude from the side of the first clamping part 42 opposite to the yoke part 511, and their top ends are welded to form a welding part. The groove 44 opened in the first clamping part 42 increases the distance from the welding part of the third terminal 5221 and the second welding end 213 to the first clamping part 42. That is, the welding part of the third terminal 5221 and the second welding end 213 to the bottom of the groove 44 opened in the first clamping part 42 forms a heat insulation height difference, preventing the first clamping part 42 from carbonizing when heated.

[0102] The second clamping part 43 corresponding to the U phase is fixedly clamped to the end connection part 11 of the corresponding U phase. The fourth terminal 5222 and the end connection part 11 of the corresponding U phase both protrude from the side of the second clamping part 43 opposite to the yoke part 511, and their top ends are welded to form a welded part. The groove 44 opened in the second clamping part 43 increases the distance from the welded part of the fourth terminal 5222 and the end connection part 11 to the second clamping part 43. That is, a heat insulation height difference is formed between the welded part of the fourth terminal 5222 and the end connection part 11 and the bottom of the groove 44 opened in the second clamping part 43, so as to prevent the second clamping part 43 from carbonizing when heated.

[0103] In some embodiments, each phase intermediate connector 20 includes a plurality of phase conductor bridges 21, and each phase insulation bracket 40 further includes a second insulation portion that electrically isolates the plurality of phase conductor bridges 21 of the same phase type. See also Figure 1 The intermediate connector 20 corresponding to phase U includes two phase line bridges 21. One phase line bridge 21 is welded to X1 through its first welding end 212 and to U2 through its second welding end 213. The other phase line bridge 21 is welded to X2 through its first welding end 212 and to U3 through its second welding end 213. The end connector 11 corresponding to phase U is welded to X3. The beginning connector 30 corresponding to phase U is welded to U1 through its input end 31.

[0104] In the insulating bracket 40 corresponding to phase U, the first insulating part 41 electrically isolates the end connection part 11 of phase U and the second welding end 213 connected to U3. The first insulating part 41 thus electrically isolates the end connection part 11 and the intermediate connector 20. The second insulating part electrically isolates the first welding end 212 connected to X2 and the second welding end 213 connected to U2. The second insulating part thus electrically isolates the two phase line bridges 21 of phase U.

[0105] Furthermore, in the two phase line bridges 21 corresponding to phase V, one phase line bridge 21 is welded to Y1 through its first welding end 212 and to V2 through its second welding end 213, and the other phase line bridge 21 is welded to Y2 through its first welding end 212 and to V3 through its second welding end 213. The end connection part 11 corresponding to phase V is welded to Y3, and the beginning connection part 30 corresponding to phase V is welded to V1 through the input end 31.

[0106] In the insulating bracket 40 corresponding to phase V, the first insulating part 41 electrically isolates the end connection part 11 of phase V and the second welding end 213 connected to V3. The first insulating part 41 thus electrically isolates the end connection part 11 and the intermediate connector 20. The second insulating part electrically isolates the first welding end 212 connected to Y2 and the second welding end 213 connected to V2. The second insulating part thus electrically isolates the two phase line bridges 21 of phase V.

[0107] Furthermore, in the two phase line bridges 21 corresponding to phase W, one phase line bridge 21 is welded to Z1 through its first welding end 212 and to W2 through its second welding end 213, and the other phase line bridge 21 is welded to Z2 through its first welding end 212 and to W3 through its second welding end 213. The end connection part 11 corresponding to phase V is welded to Z3, and the beginning connection part 30 corresponding to phase W is welded to W1 through the input end 31.

[0108] In the insulating bracket 40 corresponding to phase W, the first insulating part 41 electrically isolates the end connection part 11 of phase W and the second welding end 213 connected to W3. The first insulating part 41 thus electrically isolates the end connection part 11 and the intermediate connector 20. The second insulating part electrically isolates the first welding end 212 connected to Z2 and the second welding end 213 connected to W2. The second insulating part thus electrically isolates the two phase line bridges 21 of phase W.

[0109] In some embodiments, each phase insulation bracket 40 further includes a third insulation portion that electrically isolates the phase-type phase bridge 21 and the first-end connector 30. See also Figure 12The third insulating part can be disposed between the first welding end 212 and the fifth terminal 5231 in the figure. The first welding end 212 is welded to the sixth terminal 5232, and the fifth terminal 5231 is welded to the input end 31 of the corresponding V-phase first end connector 30.

[0110] In other embodiments, the stator assembly can also be obtained by combining conductive components and a six-branch stator assembly, or by combining conductive components and an eight-branch stator assembly. A six-branch stator assembly refers to a stator assembly in which each phase winding includes six wound phase wires, and an eight-branch stator assembly refers to a stator assembly in which each phase winding includes eight wound phase wires. Combining conductive components and a six-branch stator assembly can yield a single-branch motor, a two-branch motor, or a three-branch motor, thereby enabling single-branch motors, two-branch motors, and three-branch motors to be produced on the same production line and share a six-branch stator assembly. Combining conductive components and a six-branch stator assembly can yield a single-branch motor, a two-branch motor, or a four-branch motor, thereby enabling single-branch motors, two-branch motors, and four-branch motors to be produced on the same production line and share an eight-branch stator assembly.

[0111] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A stator assembly, characterized in that, The system includes a stator assembly (500) and a conductive assembly (100). The stator assembly (500) has a preset phase configuration and includes multi-phase windings, each phase of which includes multiple wound phase wires. The conductive assembly (100) includes: The star-point connector (10) includes a star-point conductive part (12) and an end connection part (11) that are electrically connected, and the end connection part (11) is configured according to the preset phase type; The bridging unit includes an intermediate connector (20) configured according to the preset phase pattern; The bus unit includes a head connector (30) configured according to the preset phase pattern; in: The intermediate connector (20) is dielectrically disposed with the end connector (11) and the first connector (30); the intermediate connector (20) of each phase connects multiple wound phase wires of the same phase type in series to form at least one series branch; the end connector (11) of each phase is connected to the end of the series branch of the same phase type; the first connector (30) of each phase is connected to the first end of the series branch of the same phase type.

2. The stator assembly as described in claim 1, characterized in that, Each phase winding includes an odd number of wound phase lines, and each phase intermediate connector (20) connects all wound phase lines of the same type in series to form a series branch.

3. The stator assembly as described in claim 1, characterized in that, Each phase winding comprises an even number of wound phase lines; wherein: The intermediate connector (20) of each phase connects all the wound phase lines of the same phase type in series into a series branch; or, In each phase, multiple wound phase lines at predetermined intervals are connected in series by intermediate connectors (20) of the same phase type to form a series branch. All wound phase lines in each phase form multiple series branches connected in parallel. In the multiple series branches of each phase type, each series branch has the same number of wound phase lines.

4. The stator assembly as described in any one of claims 1 to 3, characterized in that, The stator assembly further includes an insulating bracket (40) configured according to the preset phase type. Each phase of the insulating bracket (40) fixes the end connection portion (11) and the intermediate connection member (20) of the same phase type. The insulating bracket (40) includes a first insulating portion (41) that electrically isolates the end connection portion (11) and the intermediate connection member (20).

5. The stator assembly as described in claim 4, characterized in that, Each phase intermediate connector (20) includes one or more phase line bridges (21), each phase line bridge (21) includes a front section (2111), a middle section (2112) and a rear section (2113), the front section (2111) and the rear section (2113) are bent in opposite directions and connected to the two ends of the middle section (2112) and form two avoidance concave angles respectively.

6. The stator assembly as described in claim 4, characterized in that, The insulating bracket (40) further includes a first clamping part (42) and a second clamping part (43). The first clamping part (42) clamps the intermediate connector (20), and the second clamping part (43) clamps the end connector (11). The side of the first clamping part (42) opposite to the yoke (511) is recessed into the yoke (511) to form a recess (44). The side of the second clamping part (43) opposite to the yoke (511) is recessed into the yoke (511) to form a recess (44).

7. The stator assembly as described in claim 4, characterized in that, Each phase intermediate connector (20) includes one or more phase line bridges (21), each phase line bridge (21) including a twist bar (211), a first welding end (212) and a second welding end (213), the first welding end (212) and the second welding end (213) being respectively connected to both ends of the twist bar (211), both protruding from the side of the twist bar (211) opposite to the yoke (511) to fit the insulating bracket (40).

8. The stator assembly as described in claim 4, characterized in that, Each phase intermediate connector (20) includes multiple phase line bridges (21), and each phase insulating bracket (40) also includes a second insulating portion that electrically isolates the multiple phase line bridges (21) of the same phase type.

9. An electric motor, characterized in that, The rotor assembly includes a rotor assembly and a stator assembly as described in any one of claims 1 to 8, wherein the stator assembly further includes a stator core having the multiphase winding, and the rotor assembly is rotatably disposed relative to the stator core.

10. A vehicle, characterized in that, Includes the motor as described in claim 9.

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