TW201944700A - Stator and electrical connection structure thereof - Google Patents

Abstract

The present disclosure provides an electrical connection structure of a stator. The electrical connection structure includes a housing and at least one connection sheet. The housing has a first opening and a second opening. The at least one connection sheet is embedded within the housing and has a first receiving part positioned in the first opening, and a second receiving part positioned in the second opening.

Description

Stator and its electrical connection structure

The invention relates to a stator, in particular to a stator and an electrical connection structure thereof.

One of the current alternators is basically used to convert mechanical energy into electrical energy in the form of alternating current. When a vehicle is equipped with an alternator, an induced current can be generated through the combined operation of a stator and a rotor driven by an engine. In detail, the rotor includes a set of coils that surround the metal core, and the current passing through the coils generates a magnetic field that surrounds the metal core. The strength of the magnetic field is determined by the field strength of the exciting current. The field strength can be a DC current supplied by the brush and the slip ring. When an engine is running, the rotor is driven and rotated by an alternator pulley coupled to the engine.

A stator may have multiple sets of windings wound around a stator ring and surrounding the rotor. The stator is fixed to a casing of the alternator and does not rotate. When the rotor rotates in the stator winding, the magnetic field of the rotor sweeps over the stator winding, generating an electromotive force to generate a current in the stator winding. The current can charge a battery to supply power to other electronic parts in the vehicle. Therefore, through the use of an AC generator, the mechanical energy generated by an engine can be converted into electrical energy.

In one of today's stators, in order to increase the magnetic field of a three-phase stator, it is important to have these three-phase windings set at 120 degrees. In order to achieve this, a Y-connection or a triangle connection can be applied. In this way, the winding can be coupled to a rectifier to convert an alternating current into a direct current.

However, the winding is composed of multiple wires, which are connected in series or in parallel to form three phases. The two wires can be manually coupled together by winding or welding. This configuration can be cumbersome and time consuming if multiple wires need to be coupled together. In addition, in this intricate coupling process, two wires may be erroneously coupled together, causing a failure.

Therefore, a stator and its electrical connection structure that can enable wires to be arranged in an orderly manner are desired by the industry.

According to a first aspect of the present disclosure, an electrical connection structure is provided. The electrical connection structure includes a casing and at least one connection piece. The casing has a first opening and a second opening. The connecting piece is embedded in the housing, and at least one connecting piece has a first receiving portion located in the first opening and a second receiving portion located in the second opening.

According to another aspect of the present disclosure, a stator is provided, which has a stator ring, a stator winding, and an electrical connection structure. The stator ring has a plurality of teeth, which are spaced apart along the periphery and extend radially. The plurality of teeth define a plurality of slots, each of which is formed between two of the adjacent teeth. The stator winding is wound on a plurality of teeth and includes a first electric wire, a second electric wire and a third electric wire, each of which extends outward from the slots. The electrical connection structure is located on one axial side of the stator winding. The electrical connection structure includes a casing, at least one connection piece, and a cable. The casing has a first opening, a second opening and a hole. At least one connecting piece is embedded in the housing and has a first receiving portion and a second receiving portion. The first receiving portion is located in the first opening and is exposed outward from the first opening, and the second receiving portion is located in the second opening and Exposed from the second opening. The first wire is coupled to the first receiving portion in the first opening. The second wire is coupled to the second receiving portion in the second opening. The cable has a connection section, a positioning section and an extension section connected in series with each other. The connecting section is coupled to the third wire at the hole. The positioning section is located on the top of the casing. The extension extends in a direction away from the stator ring.

In order to better understand the features, contents and advantages of this disclosure and the effects that can be achieved, the disclosure is described in detail in conjunction with the accompanying drawings and in the form of examples in the following, and the main purpose of the drawings is only For the purpose of illustrating and assisting the description, the relationship between the proportion and configuration of the attached drawings should not be interpreted, and the scope of patent application of this disclosure should not be limited.

The terms used in the description of this disclosure are only used to describe specific embodiments, and are not intended to limit the scope of patent application of this disclosure. In the description of the present invention and the scope of the attached patent application, the terms "a" or "the", unless explicitly stated otherwise, mean that the singular includes the plural. It is to be understood that the term "and / or" herein may include any or all combinations of the associated listed elements. It is further understood that the terms "including" and / or "including" in the description herein are used to clarify the existence of said multiple features, things, steps, operations, elements and / or components, but do not exclude one or at least one The presence or addition of features, things, steps, operations, elements, components and / or combinations thereof.

The disclosure provides a stator winding that is mounted on a rotor, a housing, and other parts, such as a rectifier, to form an AC generator. Alternating current generators can be installed on a vehicle, such as cars, stackers, cranes, weeders, and the like to provide electrical power to various electronic parts such as lamps, infrared sensors, and air conditioners installed in the vehicle. , Broadcast, rear view cameras, and the like.

The stator has a plurality of sets of coils wound around a stator ring surrounding the rotor. The stator ring is cylindrical and has a plurality of teeth, which are formed on the inner peripheral surface of the ring body. In detail, the teeth extend from the ring body to the axis of the stator. A plurality of grooves are defined between each two adjacent teeth. The electric wire is inserted into the slot and wound around the teeth to form a plurality of coils.

FIG. 1 is a perspective view of a stator 100 according to an embodiment of the disclosure, and FIG. 2 is an exploded view of the stator 100 shown in FIG. 1. The following description describes a stator in which wires can be arranged in an easy and orderly manner. The stator 100 includes a stator ring 1, a plurality of stator windings 2, and two electrical connection structures (ie, a first electrical connection structure 3 and a second electrical connection structure 4).

In some embodiments of the present disclosure, the stator ring 1 includes a ring body 11 and a plurality of teeth 10. The ring body 11 is cylindrical. The ring body 11 may be a multilayer structure formed by stacking a plurality of metal sheets through lamination. The ring body 11 has two opposite axial sides, which include an upper axial side 112 and a lower axial side 114, and the ring body 11 defines a space therein to accommodate a rotor. The teeth 10 are spaced apart from each other on the periphery and extend radially from the ring body 11 toward the axis of the stator 100. The tooth portion 10 defines a plurality of grooves 12 and each of the tooth portions 10 is formed between two adjacent tooth portions 10. In other embodiments, the teeth 10 are formed on the inner peripheral surface of the ring body 11 so that the teeth 10 extend radially inward from the ring body 11.

In some embodiments of the present disclosure, the stator winding 2 is wound on the tooth portion 10 of the stator ring 1. Each of the stator windings 2 includes a plurality of coils connected by a plurality of electric wires. In this embodiment, a part of the electric wire is located in the groove 12 defined by the tooth portion 10, and four or five electric wires are radially arranged in the single groove 12, so that the groove has a first row 121 and a second wire. Column 122, third column 123 to fourth column 124, or fifth column 125. Among the electric wires of the first row 121 to the fifth row 125, the first row 121 is the row closest to the outside of the stator ring 1. The fourth row 124 or the fifth row 125 is the innermost row closest to the stator ring 1. Furthermore, the coil systems may be connected in series or in parallel to each other to form a three-phase winding. The three-phase winding may be coupled to a rectifier that is configured to convert an alternating current into a direct current. For example, the windings can be connected in a triangular or Y-shaped manner.

FIG. 3 is a partial exploded view of the stator 100 shown in FIG. 1. 1 to 3, in some embodiments of the present disclosure, the first electrical connection structure 3 and the second electrical connection structure 4 partially surround the axis A1 of the stator 100, so that the first electrical connection structure 3 and the second electrical connection structure 3 The connecting structure 4 is curved. In addition, the electrical connection structures 3 and 4 are located on the axial side 112 above the stator ring 1 so that the first electrical connection structure 3 and the second electrical connection structure 4 cover different parts of the stator winding 2. In other embodiments, the first electrical connection structure 3 is located on the upper axial side 112 and the second electrical connection structure 4 is located on the lower axial side 114. It can be understood that, in order to clearly show other parts of the stator 100, the wavy electric wire portion exposed to the stator winding 2 of the stator ring 1 is omitted from FIGS. 1 to 4 and is not shown.

As shown in FIG. 2 and FIG. 5 according to an embodiment of the present disclosure, each of the first electrical connection structure 3 and the second electrical connection structure 4 includes a housing 30, 40, a plurality of connection pieces 31, 41, and at least One cable (ie, the first cable 321, the second cable 322, and the third cable 421). Regarding the first electrical connection structure 3, the casing 30 may be made of a non-conductive material, such as a plastic material made of glass fiber. The housing 30 includes a body 300 having a first surface 301, a second surface 302, an inner surface 303, and an outer surface 304. The first surface 301, which may be an upper surface, is opposite to the second surface 302, and faces away from the stator ring 1; the second surface 302, which may be a bottom surface, faces the stator ring 1. The inner surface 303 is opposite to the outer surface 304 and faces an axis A1 of the stator 100, so that the inner surface 303 is seated inside the first electrical connection structure 3. However, the outer surface 304 faces away from the axis A1 of the stator 100, The outer surface 304 is seated on the outer side of the first electrical connection structure 3. In this embodiment, the first electrical connection structure 3 is arc-shaped, and the inner surface 303 and the outer surface 304 are curved. In addition, a rounded edge is formed between the outer surface 304 and the first surface 301 to reduce the volume and weight of the first electrical connection structure 3 and avoid interference with other parts. Furthermore, the casing 30 has a plurality of openings (ie, the first opening 33a to the ninth opening 33i) and a plurality of holes (ie, the first hole 34a and the second hole 34b). The first opening 33a to the ninth opening 33i, the first hole 34a, and the second hole 34b are defined at different positions of the casing 30. It can be clearly understood that the number and configuration of the openings and holes disclosed in this embodiment are not intended to limit the present disclosure. Those skilled in the art can modify the number and configuration of the openings and holes without departing from the spirit of this embodiment. .

FIG. 4 is a perspective view of the stator 100 shown in FIG. 1, in which the casings 30 and 40 and the cables (ie, the first cable 321, the second cable 322, and the third cable 421) are omitted. FIG. 5 is an exploded view of the connection pieces 31 and 41 and the connection blocks 35, 38, and 45 of the first electrical connection structure 3 and the second electrical connection structure 4 shown in FIG. As shown in FIGS. 1 to 5, in some embodiments of the present disclosure, the connecting piece 31 is embedded in the housing 30. For example, when the housing 30 is manufactured by injection molding, Before forming in a mold, the connecting piece can be placed on a mold first, so that the connecting piece can be buried in the shell. In some embodiments of the present disclosure, the connecting piece 31 includes a first connecting piece 311, a second connecting piece 312, a third connecting piece 313, and a fourth connecting piece 314, which are not in direct contact with each other. In other words, each of the connecting pieces 31 may be spaced apart from each other by a part of the housing 30 so that each of the connecting pieces 31 are not in direct contact with each other.

In some embodiments of the present disclosure, the first connecting piece 311 has a first receiving portion 311a, a second receiving portion 311b, and an extending portion 311c. The extension portion 311c is connected to the first receiving portion 311a and the second receiving portion 311b. The first receiving portion 311a is located in the first opening 33a and is exposed outward from the first opening 33a (as shown in FIG. 2). The first opening 33a may be formed on the inner surface 303 and may extend to the upper surface 301 and the bottom surface 302, so that the first opening 33a is formed on the inner edge of the casing 30 facing the axis A1. The second receiving portion 311b is located in the second opening 33b (as shown in FIG. 2) and is exposed from the second opening 33b. The second opening 33b may be formed on the outer surface 304 and extended to the upper surface 301 and the bottom surface 302, so that the second opening 33b is formed on the outer edge of the casing 30 facing away from the axis A1. As shown in FIGS. 2, 3 and 5, one end of the first electric wire 51 in the fourth row 124 of the stator winding 2 is coupled to the first receiving portion 311 a of the first opening 33 a. One end of the second electric wire 52 in the second row 122 of the stator winding 2 is coupled to the second receiving portion 311b in the second opening 33b. In this embodiment, the first electric wire 51 and the second electric wire 52 protrude perpendicularly from the groove 12 to be coupled to the opposite first receiving portion 311a and the second receiving portion 311b. The end of the first electric wire 51 can be abutted against the first receiving portion 311a, so that the first electric wire 51 and the first receiving portion 311a can directly contact. Therefore, by placing the first electrical connection structure 3 on the stator winding 2, the first electric wire 51 to the second electric wire 52 can be coupled through the first connecting piece 311 in the housing 30. Therefore, since the first electrical connection structure 3 is placed on a specific position of the stator winding 2, all the receiving portions can be directly coupled to the opposite cables, respectively, and the electrical coupling of the two cables can be achieved. Therefore, the user does not need to hold one wire and pull it to the other wire to couple the two wires. In the present disclosure, “vertical” represents a vertical direction parallel to the axis A1 of the stator 100.

As shown in FIG. 5, the first receiving portion 311 a includes two protruding portions 315 protruding from the extending portion 311 c and spaced apart from each other, so that the first receiving portion 311 a has a C-shape. The first electric wire 51 can be inserted into a space defined by one of the two protruding portions 315 and one of the extension portions 311 c to be engaged with the first connecting piece 311 to increase the contact area and further improve the electrical conduction between the two. In addition, the second receiving portion 311b is a C-shaped structure and has a space for the second electric wire 52 to be inserted.

In other embodiments, the first wires 51 may be bent or twisted together to directly contact the first receiving portion 311a, thereby increasing the contact area between the two. In addition, one end of the first electric wire 51 may be welded or welded to the first receiving portion 311a. In other embodiments, the first opening 33a may be formed only on the second surface 302 and not exposed from the first surface 301 and the inner surface 303, so that the first electric wire 51 can be inserted only through the second surface 302 To the first opening 33a. Similarly, the second opening 33b may be formed only on the second surface 302 and not exposed from the first surface 301 and the outer surface 304.

As shown in FIGS. 2, 3 and 5, in some embodiments of the present disclosure, the second connecting piece 312 has a third receiving portion 312 a, a fourth receiving portion 312 b, and an extension portion 312 c. The extension portion 312 c is connected to the third portion. The receiving portion 312a and the fourth receiving portion 312b, the third opening 33c extends to the first surface 301 and the second surface 302, but does not extend to the inner surface 303 and the outer surface 304. The fourth opening 33d is formed on the outer surface 304 and extends from the first surface 301 to the second surface 302. In addition, along the lengthwise direction of the first electrical connection structure 3, the third opening 33c is located between the first opening 33a and the second opening 33b, and the second opening 33b is located between the third opening 33c and the fourth opening 33d. The third receiving portion 312a is located in the third opening 33c, and the fourth receiving portion 312b is located in the fourth opening 33d. The third electric wire 53 to the third opening 33c of the fourth row 124 are placed to be coupled to the third receiving portion 312a, and the fourth electric wire 54 to the fourth opening 33d of the second row 122 are placed to be coupled to the third receiving section 312a. The four receiving portions 312b can achieve electrical coupling between the third electric wire 53 and the fourth electric wire 54.

The relative positions of the first connection piece 311 and the second connection piece 312 can be adjusted according to actual needs. For example, as shown in FIG. 2, FIG. 4 and FIG. 5, the extension portion 311 c of the first connection piece 311 is received in the first electrical connection structure 3 and is located in the extension portion 312 c of the second connection piece 312. Radially outward. In an embodiment (not shown), the third opening 33c and the fourth opening 33d are located between the first opening 33a and the second opening 33b, so that the third receiving portion 312a and the fourth receiving portion 312b are located at Between the first receiving section 311a and the second receiving section 311b.

In some embodiments of the present disclosure, the third connecting piece 313 has a fifth receiving portion 313a, a sixth receiving portion 313b, and an extending portion 313c. The extending portion 313c connects the fifth receiving portion 313a and the sixth receiving portion 313b. The fifth opening 33e and the sixth opening 33f are formed on the outer surface 304 and extend to the first surface 301 and the second surface 302. Along the lengthwise direction of the first electrical connection structure 3, the third opening 33c is located between the first opening 33a and the second opening 33b, and the fourth opening 33d is located between the fifth opening 33e and the sixth opening 33f. The fifth receiving portion 313a is located in the fifth opening 33e, and the sixth receiving portion 313b is located in the sixth opening 33f. The fifth receiving portion 313a is coupled by placing the fifth electric wire 55 to the fifth opening 33e of the second row 122, and the sixth receiving line 313a is coupled by placing the sixth cable 56 to the sixth opening 33f of the second row 122. The receiving unit 313b can obtain the electrical coupling of the fifth electric wire 55 and the sixth electric wire 56. Furthermore, the fifth receiving portion 313 a includes a protruding portion that can protrude from the extending portion 313 c and is perpendicular to the extending portion 313 c to be coupled to the fifth electric wire 55.

In some embodiments of the present disclosure, the fourth connecting piece 314 has a seventh receiving portion 314a, an eighth receiving portion 314b, a ninth receiving portion 314d, and an extension portion 314c. The extension portion 314c is connected to the seventh receiving portion 314a, The receiving unit 314b and the ninth receiving unit 314d. The seventh opening 33g, the eighth opening 33h, and the ninth opening 33i are formed on the outer surface 304 and extend to the first surface 301 and the second surface 302. Along the lengthwise direction of the first electrical connection structure 3, the seventh opening 33g is located between the fourth opening 33d and the sixth opening 33f, the sixth opening 33f is located between the seventh opening 33g and the eighth opening 33h, and the eighth The opening 33h is located between the seventh opening 33g and the ninth opening 33i. The seventh receiving portion 314a, the eighth receiving portion 314b, and the ninth receiving portion 314d are located in the seventh opening 33g, the eighth opening 33h, and the ninth opening 33i, respectively. The seventh receiving part 57, the eighth receiving part 58, and the ninth receiving part 59 in the first column 121 are placed in the seventh opening 33g, the eighth opening 33h, and the ninth opening 33i to couple the seventh receiving part 314a and the eighth receiving part. The part 314b and the ninth receiving part 314d can achieve electrical coupling between the seventh electric wire 57, the eighth electric wire 58, and the ninth electric wire 59.

In this embodiment, the fourth opening 33d and the seventh opening 33g are located between the fifth opening 33e and the sixth opening 33f, and the third connecting piece 313 may extend above the fourth receiving portion 312b and the seventh receiving portion 314a, such as As shown in FIG. 4, the third connection piece 313 is prevented from contacting the second connection piece 312 and the fourth connection piece 314. In other words, the third connecting piece 313 overlaps the fourth receiving portion 312b and the seventh receiving portion 314a, and the third connecting piece 313 does not directly contact the fourth receiving portion 312b and the seventh receiving portion 314a. In addition, as shown in FIG. 3, the body of the casing 30 has a protruding portion 36 which protrudes from the first surface 301 to receive the third connecting piece 313.

The relative positions of the third connecting piece 313 and the fourth connecting piece 314 can be adjusted according to the actual situation. For example, in one embodiment (not shown), the third connecting piece 313 is located above the fourth connecting piece 314. The fifth opening 33e and the sixth opening 33f are located between the seventh opening 33g and the eighth opening 33h, so that the fifth receiving section 313a and the sixth receiving section 313b are located between the seventh receiving section 314a and the eighth receiving section 314b. between.

As shown in an embodiment of the present disclosure shown in FIG. 2, the first electrical connection structure 3 further includes a first cable 321 and a second cable 322. The first cable 321 has a first connection section 321a, a first positioning section 321b, and a first extension section 321c, which are connected in series with each other. The first connecting section 321 a is located in the first hole 34 a. The first hole 34 a is formed on the inner surface 303 and extends to the first surface 301 and the second surface 302. The first positioning section 321 b is located on the first surface 301 of the ring body 11. The first extension section 321c extends along a direction of the axis A1 away from the stator 100 to connect to another component (not shown), such as a rectifier. A tenth wire 60 of one of the stator windings 2 protrudes from a slot to connect the first connection section 321a of the first cable 321 in the first hole 34a. Furthermore, in other embodiments, the materials of the first cable 321 and the second cable 322 may be the same or similar to the materials of the first electric wire 51 to the ninth electric wire 59.

As shown in FIGS. 2 and 5, the housing 30 further includes a connecting block 35, which is located in the first hole 34 a and has a perforation therein. The first connection section 321a abuts and is coupled to the tenth electric wire 60 received in the perforation. The size of the perforation can be configured to receive the tenth electric wire 60 and the first connection section 321a therein. The connection block 35 may be made of a conductive material, such as metal. Before the casing 30 is formed in a mold, the connection block 35 can be placed in the mold, so that the connection block 35 can be embedded in the casing 30. In some embodiments, the tenth wire 60 and the first cable 321 can be bent or twisted together, or welded together to improve the effect of electrical contact.

Similarly, the second cable 322 is coupled to an eleventh electric wire 61 in a perforation of a connection block 38 in the second hole 34b. A part of the second cable 322 is also located on the first surface 301, and another part of the second cable 322 extends away from the stator 100. In this embodiment, the first positioning section 321 b is stacked on a portion abutting on one side of the protruding portion 36 of the second cable 322 facing the axis 5. The first electrical connection structure 3 further includes a cover 37 that extends outward from the protrusion 36 and toward the axis A1 to cover and position the first positioning section 321b portion of the first cable 321. Therefore, the tenth electric wire 60 and the eleventh electric wire 61 only need to vertically extend outward from one slot 12 of the stator 100 to couple the first cable 321 and the second cable 322.

The structure of the second electrical connection structure 4 is similar to that of the first electrical connection structure 3. As shown in some embodiments of the present disclosure as shown in FIGS. 2 and 5, the second electrical connection structure 4 includes a housing 40, a fifth connection piece 415, a sixth connection piece 416, a seventh connection piece 417, and an eighth connection piece. 418, in which the fifth connection piece 415, the sixth connection piece 416, the seventh connection piece 417, and the eighth connection piece 418 are embedded in the casing 40. The fifth connection piece 415, the sixth connection piece 416, and the eighth connection piece 418 are arranged side by side and spaced from each other. The seventh connection piece 417 is provided to span the sixth connection piece 416 and the eighth connection piece 418, and the seventh connection piece 417 is separated from the sixth connection piece 416 and the eighth connection piece 418 through a part of the casing 40 so that The seventh connection piece 417 does not directly contact the sixth connection piece 416 and the eighth connection piece 418. The seventh connecting piece 417 is embedded in a protruding portion 46 (as shown in FIG. 2), and the protruding portion 46 protrudes from an upper surface 401 of the casing 40. The fifth connection piece 415, the sixth connection piece 416, the seventh connection piece 417, and the eighth connection piece 418 have at least two receiving portions, which are respectively exposed outward from two openings of the casing 40 to respectively couple the two wires. Therefore, the two wires can be coupled to each other through the corresponding fifth connection piece 415, the sixth connection piece 416, and the eighth connection piece 418. Furthermore, in some embodiments of the present disclosure, the eighth connecting piece 418 has three receiving portions 418a, 418b, and 418c, which are separated from each other. The three wires 65 from the different slots 12 are coupled to each other via the receiving portions 418a, 418b, 418c of the eighth connection piece 418.

In addition, in some embodiments of the present disclosure, the casing 40 includes a third hole 44 a (as shown in FIG. 2), which is formed on an inner surface 403 of the casing 40 and extends to the upper surface of the casing 40. 401 和 下 表面 402. As shown in FIGS. 2 and 4, a twelfth electric wire 62 may protrude outward from a slot 12 and may vertically penetrate the third hole 44 a so as to extend away from the stator 100 in a direction to further the twelfth electric wire. 62 can be coupled to another component, such as a rectifier. In some embodiments of the present disclosure, the second electrical connection structure 4 may include a connection block 45 and a third cable 421. The connecting block 45 is disposed in the third hole 44 a and is adjacent to the twelfth electric wire 62. The third cable 421 has a connection section 421a, a positioning section 421b, and an extension section 421c. The connecting section 421 a is disposed in a perforation in the connecting block 45. The positioning section 421 b is disposed on the upper surface 401 of the casing 40 and extends across the upper surface 401. The extension section 421c extends from one direction away from the stator 100 to be coupled to another component, such as a rectifier. A thirteenth electric wire 63 may be directly coupled to the connecting section 421a of the third cable 421 in the hole of the connection block 45, so that the thirteenth electric wire 63 is coupled to the rectifier via the third cable 421. Furthermore, the casing 40 may further include a cover body 47 extending outward from the protruding portion 46 so as to cover a part of the positioning section 421 b of the third cable 421. During assembly, the third cable 421 may be inserted into the connection section 421a into the connection block 45 and place the portion of the positioning section 421b into the space defined by the cover 47 and the upper surface 401 to be engaged with the housing 40.

In some embodiments of the present disclosure, the second electrical connection structure 4 further has a notch 48 formed on the outer surface of the casing 40. A fourteenth electric wire 64 may pass through the notch 48 from a slot 12 and extend outward from one direction away from the stator 100 along the axis A1 to be coupled to another component, such as a rectifier.

At the time of assembly, a plurality of electric wires 51 to 64 may be installed into the slots 12 of the stator 100 to form a plurality of stator windings 2. The output ends of the stator windings 2 (ie, the edges of the wires 51 to 64) may extend vertically from the slot 12. By inserting one end of the cables 321, 322, 421 to the connection blocks 35, 38, 45 and bending the cables 321, 322, 421 to form the connection sections 321a to 321c, the positioning sections 322a to 322c and the extension sections 421a to 421c The cables 321, 322, and 421 are mounted to the case 30. The first electrical connection structure 3 and the second electrical connection structure 4 can be placed on the top surface of the stator winding 2, and each of the first electric wire 51 to the fourteenth electric wire can be directly inserted vertically into the opposite openings 33a to 33i. Or holes 34a, 34b, 44a. Therefore, the coupling of the stator winding 2 and the rectifier can be completed.

When the space between the upper case (not shown) and the stator is limited, the first electrical connection structure 3 and the second electrical connection structure 4 are configured to be elongated and then accommodated in the space. Furthermore, the first electrical connection structure 3 and the second electrical connection structure 4 may be arc-shaped to correspond to the shape of the stator ring 1, thereby preventing the first electrical connection structure 3 and the second electrical connection structure 4 from interfering with the stator. Upper casing, lower casing and rotor.

FIG. 6 is a perspective view of a stator 200 according to another embodiment of the disclosure, and FIG. 7 is a partially enlarged top view of the stator 200 shown in FIG. 6. It should be noted that in order to clearly illustrate the electrical connection structure of the stator, most of the wires in FIGS. 6 and 7 are omitted. In this embodiment, the stator 200 includes three electrical connection structures (ie, the first electrical connection structure 3, the second electrical connection structure 4, and the third electrical connection structure 7), which are all disposed on a certain sub-ring 1. Taking the third electrical connection structure 7 as an example, the third electrical connection structure 7 includes a body 70 having a first surface 701, a second surface 702, and a side surface 703. The side surface 703 connects the first surface 701 and the second surface 702. A plurality of openings penetrate the first surface 701 and the second surface 702. A plurality of electric wires 81 to 86 are provided in the opening. In this embodiment, the electric wires 81 and 82 are connected to each other via a first connection piece (not shown) embedded in the body 70. The wires 83 and 84 are connected to each other via a second connecting piece (not shown) embedded in the body 70; the wires 85 and 86 are connected to each other through a third connecting piece (not shown) embedded in the body 70. The first connecting piece, the second connecting piece, and the third connecting piece (all not shown) are separated from each other to avoid a short circuit. In addition, the wires 81 and 88 are located in the same slot, the wires 82 and 83 are located in the same slot, the wires 84 and 85 are located in the same slot, and the wires 86 and 87 are located in the same slot.

In this embodiment, the two grooves 71 and 72 are formed on the second surface 702 and extend along the circumferential direction of the third electrical connection structure 7. In addition, the grooves 71 and 72 are respectively formed at opposite ends of the third electrical connection structure 7. The electric wires 87 and 88 protrude outward from the stator ring 1, and one of the electric wires 87 and 88 is bent and seated in the grooves 71 and 72. The other section of the wires 87 and 88 extends along the grooves 87 and 88 and protrudes outward from the third electrical connection structure 7 so that the wires 87 and 88 can extend outward from the stator ring 1 by forming the groove 71 , 72 are on the second surface 702, and the wires 87, 88 can be well arranged and located in the grooves 71, 72 between the body 70 and the stator ring 1.

As shown in FIG. 7, a wire 89 is seated on a bottom side 121 of the slot 12, and a first receiving portion 419 of an electrical connection piece of the electrical connection structure 4 can be outward from the periphery of the housing 40 of the electrical connection structure 4. Extend to be appropriately coupled to the electric wire 89. However, when the first receiving portion 419 is extended, it may accidentally contact the housing (for example, one side of the upper case or the lower case of the stator 100), thereby causing an unexpected short circuit. In this embodiment, in order to solve this problem, the first receiving portion 419 has a side surface 419a facing away from the casing 40, which is covered with an insulating layer. Therefore, by providing an insulating layer on the side surface 419a of the first receiving portion 419, an undesired short circuit between the shells of the first receiving portion 419 can be avoided.

To sum up, according to some embodiments of the present disclosure, the electrical connection structure on the winding has at least one connection piece embedded therein, that is, two wires extending outward from the slot can be coupled to each other through the connection piece of the electrical connection structure. When the electrical connection structure is disposed on the winding, the structure of the electrical connection structure allows the two wires to be coupled to the corresponding connecting piece along the axis of the electron. Therefore, there is no need to bend or pull the wires to achieve electrical connection between each other. In addition, the case provides a cable to couple to one of the wires of the electrical connection structure. When a wire seated on one side of the stator is coupled to the other side of the stator, the wire may be coupled to another component on the other side via a cable.

Unless otherwise specified, such as "above", "below", "up", "left", "right", "down", "body", "pedestal", "vertical", "horizontal", "side" , "Higher", "lower", "upper", "upper", "lower" and other spatial descriptions indicate the directions shown in the figure. It should be understood that the spatial description used herein is for illustration purposes only, and the actual implementation of the structure described herein can be spatially configured in any relative direction, and this limitation does not change the advantages of the embodiments of the present invention. For example, in the description of some embodiments, providing one element "on" another element may cover the situation where the former element is directly on the latter element (e.g., in physical contact with the latter element) and a Or a condition where a plurality of intervening elements are located between a previous element and a subsequent element.

As used herein, the terms "substantially", "substantially", "substantially" and "about" are used to describe and consider minor variations. When used in conjunction with an event or situation, these terms may mean a situation in which the event or situation occurs explicitly and a situation in which the event or situation closely resembles.

The above-mentioned embodiments are only for explaining the technical ideas and characteristics of this disclosure, and the purpose is to enable those skilled in the art to understand the content of this disclosure and implement it accordingly. When the scope of patents of this disclosure cannot be limited, Equivalent changes or modifications made in accordance with the spirit disclosed in this disclosure should still be covered by the patent scope of this disclosure.

1‧‧‧ stator ring

2‧‧‧ Stator winding

3‧‧‧First electrical connection structure

4‧‧‧Second electrical connection structure

7‧‧‧Third electrical connection structure

10‧‧‧Tooth

11‧‧‧ ring body

12‧‧‧slot

30‧‧‧shell

31‧‧‧Connector

33a‧‧‧First opening

33b‧‧‧Second opening

33c‧‧‧Third opening

33d‧‧‧fourth opening

33e‧‧‧Fifth opening

33f‧‧‧ Sixth Opening

33g‧‧‧Seventh opening

33h‧‧‧Eighth opening

33i‧‧‧9th opening

34a‧‧‧First Hole

34b‧‧‧Second Hole

35‧‧‧connection block

36‧‧‧ protrusion

37‧‧‧ Lid

38‧‧‧ connection block

40‧‧‧shell

41‧‧‧Connector

44a‧‧‧Third Hole

45‧‧‧ connection block

46‧‧‧ protrusion

47‧‧‧ Lid

48‧‧‧ notch

51‧‧‧First Wire

52‧‧‧Second wire

53‧‧‧ Third wire

54‧‧‧ Fourth wire

55‧‧‧The fifth wire

56‧‧‧ sixth wire

57‧‧‧The seventh wire

58‧‧‧Eight Wire

59‧‧‧9th wire

60‧‧‧Tenth wire

61‧‧‧Eleventh Wire

62‧‧‧Twelfth Electric Wire

63‧‧‧Thirteenth Wire

64‧‧‧ Fourteenth Wire

65‧‧‧Wire

70‧‧‧ Ontology

71, 72‧‧‧ groove

81-89‧‧‧Wire

100‧‧‧ Stator

112‧‧‧up side

114‧‧‧ lower axial side

121‧‧‧ first column

122‧‧‧Second column

123‧‧‧third column

124‧‧‧ fourth column

125‧‧‧ fifth column

300‧‧‧ Ontology

301‧‧‧first surface

302‧‧‧Second surface

303‧‧‧Inner surface

304‧‧‧outer surface

311‧‧‧First connecting piece

311a‧‧‧First receiving department

311b‧‧‧Second Reception Department

311c‧‧‧ extension

312‧‧‧Second connecting piece

312a‧‧‧Third Receiving Department

312b‧‧‧ Fourth Receiving Department

312c‧‧‧Extension

313‧‧‧ Third connecting piece

313a‧‧‧Fifth Receiving Department

313b‧ Sixth Reception Division

313c‧‧‧ extension

314‧‧‧Fourth connecting piece

314a‧‧‧Seventh receiving department

314b‧ Eighth Reception Department

314c‧‧‧Extension

314d‧‧‧9th Receiving Department

315‧‧‧ protrusion

321‧‧‧first cable

321a‧‧‧first connection

321b‧‧‧First positioning segment

321c‧‧‧First extension

322‧‧‧Second cable

401‧‧‧upper surface

402‧‧‧lower surface

403‧‧‧Inner surface

415‧‧‧Fifth connecting piece

416‧‧‧Sixth connecting piece

417‧‧‧Seventh connecting piece

418‧‧‧Eight connecting piece

418a-418c‧Receiving Department

419‧‧‧First receiving department

419a‧‧‧side surface

421‧‧‧Third cable

421a‧‧‧connection section

421b‧‧‧ positioning segment

421c‧‧‧extended

701‧‧‧first surface

702‧‧‧Second surface

703‧‧‧side surface

A1‧‧‧Axis

In order to understand the effect of the present invention and its advantages more clearly, the present invention is described in detail with reference to the accompanying drawings and in the form of embodiments.

FIG. 1 is a perspective view of a stator according to an embodiment of the disclosure.

FIG. 2 is an exploded view of the stator shown in FIG. 1.

FIG. 3 is a partial exploded view of the stator shown in FIG. 1.

FIG. 4 is a perspective view of the stator shown in FIG. 1, and the casing cable is omitted.

5 is an exploded view of the connection relationship between the connection piece and the connection block shown in FIG. 1 and the connection block of the first electrical connection structure and the second electrical connection structure.

FIG. 6 is a perspective view of a stator according to another embodiment of the disclosure.

FIG. 7 is a partially enlarged plan view of the stator shown in FIG. 6.

Claims (20)

An electrical connection structure of a stator includes: A casing having a first opening and a second opening; At least one connecting piece is embedded in the casing and has a first receiving portion located in the first opening and a second receiving portion located in the second opening. For example, the electrical connection structure of the stator of claim 1, wherein the casing is arc-shaped and surrounds an axis of the stator. The electrical connection structure of the stator as claimed in claim 1, wherein the housing includes a body having a first surface and a second surface, the second surface is opposite to the first surface, and the first opening is configured to Extends through the first surface to the second surface. The electrical connection structure of the stator as claimed in claim 1, wherein the first opening is formed on an edge of the body. The electrical connection structure of the stator of claim 3, wherein the at least one connection piece includes a first connection piece and a second connection piece, and the second connection piece is connected to the first connection piece through a part of the housing. separate. For example, the electrical connection structure of the stator of claim 1, wherein the first connecting piece has the first receiving portion and the second receiving portion, the second connecting piece has a third receiving portion and a fourth receiving portion, and the housing There is a third opening and a fourth opening, the third receiving portion is located in the third opening, and the fourth receiving portion is located in the fourth opening. The electrical connection structure of the stator according to claim 6, wherein the second opening is located between the first opening and the third opening, and the third opening is located between the second opening and the fourth opening. The electrical connection structure of the stator according to claim 6, wherein the third opening is located between the first opening and the second opening, and the second opening is located between the third opening and the fourth opening. According to the electrical connection structure of the stator of claim 6, wherein the housing has a first side and a second side, the second side is opposite to the first side, and the first connection piece includes a first The extended section is connected to the first receiving section and the second receiving section, and the second connecting piece includes a second extended section connected to the third receiving section and the fourth receiving section. For example, the electrical connection structure of the stator of claim 9, wherein the distance between the first side edge and the first extension is shorter than the distance between the first side edge and the second extension. The electrical connection structure of the stator as claimed in claim 9, wherein the first opening is formed on the first side, and the second opening is formed on the second side. The electrical connection structure of the stator as claimed in claim 6, wherein the housing includes a body having a first surface and a second surface, the second surface is opposite to the first surface, and the first opening is formed to pass through the first surface. A surface and the second surface, and the first connecting piece is located between the first surface and the second connecting piece. The electrical connection structure of the stator according to claim 6, wherein the first opening and the second opening are both formed on the first side. For example, the electrical connection structure of the stator of claim 1, wherein each of the at least one connecting piece includes a first extension, which connects the first receiving portion and the second receiving portion, and the first receiving portion includes two protrusions. Parts which protrude from the first extension and are spaced apart from each other. For example, the electrical connection structure of the stator of claim 1, wherein the housing has a hole; and the electrical connection structure further includes: A cable having a connection section, a positioning section and an extension section connected in series to each other, the connection section is located in the hole, the positioning section is located on the top of the housing, and the extension section faces away from the stator Extend in one direction. If the electrical connection structure of the stator of claim 15 further includes: A connection block is located in the hole and has a perforation therein. The connection block is coupled to the connection section of the cable received in the perforation. The electrical connection structure of the stator as claimed in claim 15, wherein the housing has a cover body which abuts and covers a part of the positioning section. For example, the electrical connection structure of the stator of claim 1, wherein the first receiving portion has a side surface facing away from the casing, and the side surface is covered with an insulating layer. The electrical connection structure of the stator according to claim 1, wherein the housing has a first surface and a second surface, the second surface is opposite to the first surface, and a groove is formed on the second surface, and Provided at one end of the housing. A stator comprising: A stator ring having a plurality of teeth, which are spaced apart along the periphery and extend radially. The teeth define a plurality of grooves, each of which is formed between two of the adjacent teeth. A stator winding that is wound on the teeth and includes a first electric wire, a second electric wire, and a third electric wire, each of which extends outward from the grooves; and An electrical connection structure is located on an axial side of the stator winding. The electrical connection structure includes: A housing having a first opening, a second opening, and a hole; and At least one connecting piece is embedded in the casing and has a first receiving portion and a second receiving portion. The first receiving portion is located in the first opening and is exposed to the outside from the first opening. The second receiving portion The first wire is coupled to the first receiving portion in the first opening, and the second wire is coupled to the second opening in the second opening. Receiving department; and A cable having a connection section, a positioning section, and an extension section connected in series to each other, the connection section is coupled to the third wire in the hole, the positioning section is located on the top of the housing, and the extension The segments extend in a direction away from the stator ring.