Transformer, motor assembly and vehicle

Abstract

The utility model provides a transformer, a motor assembly and a vehicle. The transformer comprises a first machine shell, the first machine shell comprises a first bottom plate and a first side wall, the first side wall is arranged on the first bottom plate in a protruding mode, a first containing cavity is defined by the first bottom plate and the first side wall, and a first chamfering face and a first glue pouring opening are formed in the inner wall face, facing the first containing cavity, of the first side wall; the first chamfered surface is located at one end, far away from the first accommodating cavity, of the first side wall, the first chamfered surface is connected with the inner wall of the first glue pouring port, and the first glue pouring port is communicated with the first accommodating cavity; the first glue pouring opening is used for pouring glue so that the first magnetic core can be fixed in the first containing cavity, the width of the gap between the first side wall and the first magnetic core can be increased through the arrangement of the first chamfered face, the flowing space of the side, away from the first bottom plate, of the gap is increased, and the fluidity of the glue can be improved easily, and the first chamfered face is connected with the inner wall of the first glue pouring opening. Therefore, gas in the first glue filling port is easier to exhaust, glue filling is facilitated, and the assembling efficiency of the transformer is improved.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to a transformer, a motor assembly and a vehicle. Background Art

[0002] The transformer usually injects glue into the casing through a glue injection port on the casing to fix the magnetic core in the casing. However, since the glue is sticky, it is difficult to inject glue, which affects the assembly efficiency of the transformer. Utility Model Content

[0003] The present application provides a transformer, a motor assembly and a vehicle, which are at least used to improve the transformer assembly efficiency.

[0004] In a first aspect, the present application provides a transformer, comprising a first casing, the first casing comprising a first bottom plate and a first side wall, the first side wall being protruding from the first bottom plate, the first bottom plate and the first side wall enclosing a first accommodating cavity, the first side wall being formed with a first chamfered surface and a first glue pouring port on the inner wall surface facing the first accommodating cavity, the first chamfered surface being located at an end of the first side wall away from the first accommodating cavity, the first chamfered surface being connected to the inner wall of the first glue pouring port, and the first glue pouring port being communicated with the first accommodating cavity; the first glue pouring port is used for pouring glue to fix the first magnetic core in the first accommodating cavity.

[0005] In one embodiment, the first housing further includes a second side wall, the second side wall is protruded from the first bottom plate, the first side wall surrounds the second side wall, the first side wall, the second side wall and the first bottom plate enclose the first accommodating cavity, the second side wall is formed with a second chamfered surface and a second glue pouring port on the inner wall surface facing the first accommodating cavity, the second chamfered surface is located at an end of the second side wall away from the first accommodating cavity, the second chamfered surface is connected to the inner wall of the second glue pouring port, the second glue pouring port is communicated with the first accommodating cavity, and the second glue pouring port is used for glue pouring.

[0006] In one implementation, the first chamfered surface and the second chamfered surface are arranged opposite to each other.

[0007] In one embodiment, there are multiple first glue filling ports, and the multiple first glue filling ports are spaced apart on the inner wall surface of the first side wall; and / or, there are multiple second glue filling ports, and the multiple second glue filling ports are spaced apart on the inner wall surface of the second side wall.

[0008] In one embodiment, the transformer further includes a rectifier circuit board, and the rectifier circuit board is disposed on a side of the first housing away from the first accommodating cavity.

[0009] In one embodiment, the first housing further includes a second accommodating cavity, the first side wall passes through two opposite surfaces in the thickness direction of the first bottom plate, the first side wall and the other side of the first bottom plate in the thickness direction of the first bottom plate together enclose the second accommodating cavity, the second accommodating cavity and the first accommodating cavity are located on opposite sides in the thickness direction of the first bottom plate, and the rectifier circuit board is accommodated in the second accommodating cavity.

[0010] In one embodiment, the transformer further includes a first magnetic core, and the first magnetic core is accommodated in the first accommodating cavity.

[0011] In one embodiment, the transformer further includes a first buffer, and the first buffer is disposed between the first magnetic core and the first housing.

[0012] In one embodiment, there are multiple first buffer members, and the multiple first buffer members are arranged at intervals in the circumferential direction of the first magnetic core.

[0013] In one implementation, the transformer further includes a first winding, and the first magnetic core surrounds the first winding.

[0014] In one embodiment, the transformer further includes a first frame, the first frame includes a first plate body and a first annular protrusion, the first annular protrusion protrudes out of the first plate body; the first winding is wound around the first annular protrusion.

[0015] In one embodiment, the first skeleton further includes a first notch, and the first notch is arranged at an edge of the first plate body away from the first annular protrusion.

[0016] In one embodiment, the first winding includes a first wire outlet; the first plate body is provided with a first through hole, and the first wire outlet is passed through the first through hole; and / or the first annular protrusion is provided with a first slot, and the first wire outlet is passed through the first slot.

[0017] In a second aspect, the present application provides a motor assembly, which includes a motor and a transformer as in any embodiment of the first aspect, wherein the motor is connected to the transformer.

[0018] In a third aspect, the present application provides a vehicle, comprising the motor assembly of the second aspect.

[0019] The transformer, motor assembly and vehicle provided by the present application have a first chamfered surface formed on the inner wall surface of the first accommodating cavity toward which the first side wall faces. The setting of the first chamfered surface increases the width of the gap between the first side wall and the first magnetic core, and increases the flow space on the side of the gap away from the first bottom plate, which is beneficial to increasing the fluidity of the glue. At the same time, the first chamfered surface is connected to the inner wall of the first glue filling port, so that the gas in the first glue filling port is easier to discharge, thereby improving the assembly efficiency of the transformer. In addition, the setting of the first chamfered surface can also reduce the stress of the first casing, which is beneficial to improving the structural life of the first casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

[0021] Figure 1 It is a schematic diagram of a three-dimensional exploded structure of a motor assembly provided in an embodiment of the present application;

[0022] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional decomposition structure of the secondary side component;

[0023] Figure 3 It is a structural schematic diagram of a first skeleton provided in an embodiment of the present application;

[0024] Figure 4 yes Figure 3 A schematic cross-sectional view of the first skeleton along line IV-IV is shown;

[0025] Figure 5 It is a schematic diagram of a three-dimensional structure of a secondary side component provided in an embodiment of the present application;

[0026] Figure 6 is a schematic diagram of a partial cross-sectional structure of a motor assembly provided in an embodiment of the present application;

[0027] Figure 7 It is a partial three-dimensional structural schematic diagram of a motor assembly provided in an embodiment of the present application;

[0028] Figure 8 is a schematic structural diagram of a first magnetic core provided in an embodiment of the present application;

[0029] Fig. 9 yes Figure 1 Schematic diagram of the three-dimensional decomposition structure of the primary side component.

[0030] Description of reference numerals:

[0031] Motor assembly-1000, motor-200, electronic rotor shaft-201, rotor winding-202, second flow channel-203, transformer-100, secondary side component-10, first skeleton-11, first plate-111, first annular protrusion-112, first through hole-113, first notch-114, first through hole-115, first winding-12, first outlet terminal-121, first housing-13, first bottom plate-131, first flow channel-1311, second through hole-1312, first side wall-132, first chamfered surface-1321, first glue injection port-1322, first accommodating cavity-133, second side wall-134, second chamfered surface-1341, second glue injection port-1342, notch -1343, second accommodating cavity-135, first magnetic core-14, first through hole-141, opening-142, accommodating space-143, primary side component-20, second skeleton-21, second plate body-211, second annular protrusion-212, second through hole-213, second slot-214, second winding-22, second outlet terminal-221, second housing-23, second bottom plate-231, third side wall-232, third chamfered surface-2321, third potting port-2322, third accommodating cavity-233, fourth side wall-234, fourth chamfered surface-2341, fourth glue potting port-2342, second magnetic core-24, rectifier circuit board-30, first buffer component-40, second buffer component-50. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The following descriptions of the various embodiments are made with reference to the attached drawings to illustrate specific embodiments that may be implemented in the present application. Directional terms mentioned herein, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are intended to better and more clearly describe and understand the present application, rather than to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In addition, the serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0035] See also Figure 1 The present application provides a vehicle, the vehicle including a motor assembly 1000. The motor assembly 1000 includes a motor 200 and a transformer 100 provided in the present application.

[0036] Please refer to Figure 1 and Figure 2 The transformer 100 includes a first frame 11 and a first winding 12 . The first frame 11 includes a first plate 111 and a first annular protrusion 112 . The first annular protrusion 112 is protruded from the surface of the first plate 111 . The first winding 12 is wound around the first annular protrusion 112 .

[0037] By setting the first skeleton 11, the first winding 12 is wound on the first annular protrusion 112. The first winding 12 does not need to be made of self-adhesive wire. The processing and assembly methods of the first winding 12 are simpler, ensuring the relative position of the first winding 12 and the magnetic core in the transformer 100. In addition, the first plate 111 can support the first winding 12 and bring the first winding 12 closer to other windings, thereby reducing the coil leakage inductance.

[0038] The transformer 100 includes a primary component 20, a secondary component 10 and a rectifier circuit board 30. The primary component 20, the secondary component 10 and the motor 200 are stacked in sequence. The secondary component 10 is connected to the motor 200. The rectifier circuit board 30 is arranged in the secondary component 10. The rectifier circuit board 30 is connected to the first winding 12 and the rotor winding 202 in the motor 200. Among them, the secondary component 10 may include a first frame 11 and a first winding 12, that is, the first winding 12 is a secondary winding. Optionally, the primary component 20 may include a first frame 11 and a first winding 12, that is, the first winding 12 is a primary winding.

[0039] This application is described by taking the secondary component 10 including the first frame 11 and the first winding 12 as an example.

[0040] See also Figure 1 and Figure 2 The secondary side component 10 further includes a first housing 13 and a first magnetic core 14. The first frame 11 and the first magnetic core 14 are stacked, the first magnetic core 14 surrounds the first winding 12, the first magnetic core 14, the first frame 11 and the first winding 12 are all arranged on one side of the first housing 13, the rectifier circuit board 30 is arranged on the other side of the first housing 13, and the first winding 12 passes through the first housing 13 and is connected to the rectifier circuit board 30.

[0041] Please combine Figure 3 and Figure 4 Specifically, the first plate 111 is formed with a first through hole 113, the first annular protrusion 112 is located at the edge of the first plate 111 near the first through hole 113, and the cross-section of the first frame 11 is an L-shaped structure. The first through hole 113 is used to pass the rotor shaft of the motor 200.

[0042] See also Figure 3 For example, the first frame 11 further includes a first notch 114, which is disposed at an edge of the first plate 111 away from the first annular protrusion 112. The first notch 114 penetrates two opposite surfaces of the first plate 111, and when the secondary edge component 10 is glued, the first notch 114 is provided to facilitate the flow of glue.

[0043] The shape of the first notch 114 can be semicircular, triangular, rectangular or other shapes, and is not particularly limited.

[0044] There may be multiple first notches 114 , which are spaced apart at the edge of the first plate 111 away from the first annular protrusion 112 . The multiple first notches 114 are located circumferentially of the first plate 111 , and are conducive to accelerating the flow of glue.

[0045] For example, please refer again to Figure 2 The first winding 12 includes a first outlet terminal 121. The first plate 111 is provided with a first through hole 115, the first through hole 115 passes through two opposite surfaces of the first plate 111, and the first outlet terminal 121 passes through the first through hole 115; and / or, the first annular protrusion 112 is provided with a first slot, the first slot passes through two opposite surfaces of the first annular protrusion 112, and the first outlet terminal 121 passes through the first slot.

[0046] In one embodiment, the first plate body 111 is provided with a first through hole 115 , and the first outlet terminal 121 passes through the first through hole 115 , and then passes through the first magnetic core 14 and the first housing 13 , and is directly welded to the rectifier circuit board 30 .

[0047] In another embodiment, a first slot is provided on the first annular protrusion 112, and the first slot is connected to the first through hole 113. After the first outlet terminal 121 passes through the first slot and the first through hole 113, it passes through the first magnetic core 14 and the first housing 13, and is welded on the rectifier circuit board 30. The provision of the first slot is conducive to the release of stress of the first frame 11, and improves the reliability and structural life of the first frame 11.

[0048] By way of example, the first housing 13 includes a first bottom plate 131, a first side wall 132 and a first accommodating cavity 133. The first side wall 132 is protruded from the first bottom plate 131. The first bottom plate 131 and the first side wall 132 enclose the first accommodating cavity 133. The first side wall 132 is formed with a first chamfered surface 1321 and a first glue pouring port 1322 on the inner wall surface facing the first accommodating cavity 133. The first glue pouring port 1322 is communicated with the first accommodating cavity 133. The first chamfered surface 1321 is located on the inner wall surface of the first side wall 132. The first chamfered surface 1321 is located at one end of the first side wall 132 away from the first accommodating cavity 133. The first chamfered surface 1321 is connected to the inner wall of the first glue pouring port 1322. The first glue pouring port 1322 is communicated with the first accommodating cavity 133. The first skeleton 11 and the first magnetic core 14 are stacked and are both accommodated in the first accommodating cavity 133. The first glue filling port 1322 is used for glue filling. In other words, glue can be injected into the first accommodating cavity 133 through the first glue filling port 1322 .

[0049] Since the first side wall 132 forms a first chamfered surface 1321 on the inner wall surface of the first accommodating cavity 133, the setting of the first chamfered surface 1321 increases the width of the gap between the first side wall 132 and the first magnetic core 14, and increases the flow space on the side of the gap away from the first bottom plate 131, which is conducive to increasing the fluidity of the glue. At the same time, the first chamfered surface 1321 is connected to the inner wall of the first glue filling port 1322, so that the gas in the first glue filling port 1322 is easier to be discharged, which facilitates the filling of glue, thereby improving the assembly efficiency of the transformer 100. In addition, the setting of the first chamfered surface 1321 can also reduce the stress of the first housing 13, which is conducive to improving the structural life of the first housing 13.

[0050] Please combine Figure 5 The first accommodating cavity 133 is used to accommodate the first frame 11, the first winding 12 and the first magnetic core 14. The first magnetic core 14 is disposed in the first accommodating cavity 133, and the first magnetic core 14 has an accommodating space 143. The first frame 11 and the first winding 12 are both disposed in the accommodating space 143, and there is a gap between the first magnetic core 14 and the first side wall 132.

[0051] For example, the inner wall surface of the first side wall 132 is recessed to form a first glue filling port 1322, and the first glue filling port 1322 connects the two opposite ends of the first side wall 132 in the height direction of the first side wall 132. In the height direction of the first side wall 132, a first chamfered surface 1321 is formed at the end of the first side wall 132 away from the first bottom plate 131, and the first chamfered surface 1321 is arranged toward the first accommodating cavity 133.

[0052] The first side wall 132 is a circular ring structure, and a first chamfered surface 1321 is disposed around the circumference of the first side wall 132 . The first chamfered surface 1321 is away from the first bottom plate 131 .

[0053] Furthermore, part of the first glue filling port 1322 is located on the first side wall 132, and another part of the first glue filling port 1322 is located on the first bottom plate 131. The outer contour of the first glue filling port 1322 is an L-shaped structure. The part of the first glue filling port 1322 on the first bottom plate 131 is beneficial to reducing the stress of the first bottom plate 131 and improving the structural life of the first bottom plate 131.

[0054] When injecting glue into the first accommodating cavity 133, it can be injected from the first glue injection port 1322, and the glue flows through the first magnetic core 14, the first winding 12 and the first through hole 115 and the first notch 114 on the first plate 111 in sequence to fill the gaps between the components in the first accommodating cavity 133, and to perform encapsulation on the first magnetic core 14, the first skeleton 11 and the first winding 12 in the first accommodating cavity 133.

[0055] For example, the first housing 13 further includes a second side wall 134, which is convexly disposed on the first bottom plate 131, and the first side wall 132 surrounds the second side wall 134. The first side wall 132, the second side wall 134 and the first bottom plate 131 enclose a first accommodating cavity 133 on one side in the thickness direction of the first bottom plate 131. The second side wall 134 is formed with a second chamfered surface 1341 and a second glue injection port 1342 on the inner wall surface facing the first accommodating cavity 133. The second chamfered surface 1341 is located at an end of the second side wall 134 away from the first accommodating cavity 133, and the second glue injection port 1342 is communicated with the first accommodating cavity 133. The second chamfered surface 1341 is located on the inner wall surface of the second side wall 134, and the second chamfered surface 1341 is connected to the inner wall of the second glue injection port 1342, and the second chamfered surface 1341 is connected to the side wall of the second glue injection port 1342. The second glue injection port 1342 is used for glue injection.

[0056] Since the second side wall 134 forms a second chamfered surface 1341 on the inner wall surface of the first accommodating cavity 133, the setting of the second chamfered surface 1341 increases the width of the gap between the second side wall 134 and the first magnetic core 14, and increases the flow space on the side of the gap away from the first bottom plate 131, which is beneficial to increase the fluidity of the glue. At the same time, the second chamfered surface 1341 is connected to the inner wall of the second glue filling port 1342, so that the gas in the second glue filling port 1342 is easier to be discharged, which facilitates the filling of glue, thereby improving the assembly efficiency of the transformer 100; in addition, the setting of the second chamfered surface 1341 can also reduce the stress of the first housing 13, which is beneficial to improving the structural life of the first housing 13.

[0057] For example, the inner wall surface of the second side wall 134 is recessed to form a second glue filling port 1342, and the second glue filling port 1342 connects the two opposite ends of the second side wall 134 in the height direction of the second side wall 134. In the height direction of the second side wall 134, a second chamfered surface 1341 is formed at the end of the second side wall 134 away from the first bottom plate 131, and the second chamfered surface 1341 faces the first accommodating cavity 133, and the second chamfered surface 1341 is arranged opposite to the first chamfered surface 1321.

[0058] The structure of the second glue filling port 1342 may be similar to that of the first glue filling port 1322, and both are connected to the first accommodating cavity 133 to increase the entrance for injecting glue; the structure of the second chamfered surface 1341 may be similar to that of the first chamfered surface 1321, and both are facing the first accommodating cavity 133, and are used to increase the gap between the second side wall 134 and the first magnetic core 14, thereby improving the fluidity of the glue and reducing the stress of the second side wall 134.

[0059] By providing the second glue injection port 1342 in combination with the first glue injection port 1322 , an inlet for injecting glue into the first accommodating cavity 133 is increased, which is beneficial to improving the efficiency of glue injection.

[0060] For example, there are multiple first glue filling ports 1322 , which are spaced apart on the inner wall surface of the first side wall 132 ; and / or there are multiple second glue filling ports 1342 , which are spaced apart on the inner wall surface of the second side wall 134 .

[0061] Please combine Figure 1 and Figure 6 For example, the first housing 13 also includes a second accommodating cavity 135, the first side wall 132 passes through two opposite surfaces of the first bottom plate 131 in the thickness direction, the first side wall 132 and the first bottom plate 131 on the other side of the first bottom plate 131 in the thickness direction jointly enclose the second accommodating cavity 135, the second accommodating cavity 135 and the first accommodating cavity 133 are located on opposite sides of the first bottom plate 131 in the thickness direction; the rectifier circuit board 30 is accommodated in the second accommodating cavity 135.

[0062] It can be understood that the first side wall 132 that encloses the second accommodating cavity 135 is also provided with a first glue filling port 1322 and a first chamfered surface 1321, that is, the first side wall 132 is provided with a first glue filling port 1322 and a first chamfered surface 1321 at both opposite ends in the height direction.

[0063] When injecting glue into the second accommodating cavity 135 , the glue may be injected from the first glue injection port 1322 located at one side of the second accommodating cavity 135 to perform potting processing on the rectifier circuit board 30 and other components in the second accommodating cavity 135 .

[0064] Please combine Figure 6 A first flow channel 1311 is further formed in the first housing 13. The first flow channel 1311 passes through two opposite edges of the first bottom plate 131. The motor rotor shaft 201 passes through the first housing 13. A second flow channel 203 is formed in the motor rotor shaft 201. The first flow channel 1311 is connected to the second flow channel 203. The first flow channel 1311 and the second flow channel 203 are used to input coolant, wherein the coolant flows from the second flow channel 203 to the first flow channel 1311 (flow direction such as Figure 6 The cooling liquid flows out of the transformer 100 from the first flow channel 1311 to cool the motor rotor shaft 201 and the first housing 13; wherein the cooling liquid flowing through the first flow channel 1311 can cool the rectifier circuit board 30 in the second accommodating cavity 135, and can also cool the first magnetic core 14, the first skeleton 11 and the first winding 12 in the first accommodating cavity 133.

[0065] Please combine Figure 7 The motor 200 is located on the side of the second housing 23 facing the second accommodating cavity 135, and a notch 1343 is provided on the second side wall 134. The rotor winding 202 in the motor 200 extends out from the notch 1343 on the second side wall 134 and is connected to the rectifier circuit board 30 in the second accommodating cavity 135, so that the internal structure of the transformer 100 is compact, and the notch 1343 is provided on the second side wall 134, which is convenient for processing and is conducive to realizing the automation of the production of the second housing 23.

[0066] Please combine Figure 2 For example, the transformer 100 further includes a plurality of first buffers 40, which are all disposed between the first magnetic core 14 and the first housing 13, and are spaced apart in the circumferential direction of the first magnetic core 14. Specifically, a plurality of first buffers 40 are disposed between the first side wall 132 and the first magnetic core 14, and the plurality of first buffers 40 can reduce stress in the transformer 100. The plurality of first buffers 40 can also fix the position of the first magnetic core 14 to control the relative position of the first magnetic core 14 and the first housing 13. It can be understood that the number of the first buffer 40 can also be one.

[0067] A first through hole 141 is provided on the first magnetic core 14 at a position opposite to the first through hole 115, and a second through hole 1312 is provided on the first bottom plate 131 at a position opposite to the first through hole 115. The first output terminal 121 passes through the first through hole 115, the first through hole 141 and the second through hole 1312 in sequence to be connected to the rectifier circuit board 30 in the second accommodating cavity 135.

[0068] Among them, the first through hole 141 can effectively reduce the stress of the first magnetic core 14 and improve the structural life and reliability of the first magnetic core 14. In addition, the provision of the first through hole 141 can make the glue on the first magnetic core 14 side and the rectifier circuit board 30 side merge into one, so that the first magnetic core 14 and the rectifier circuit board 30 can be more firmly installed on the first housing 13.

[0069] The surface of the first magnetic core 14 may be provided with a buffer coating, which can reduce the stress level of the first magnetic core 14 and improve the reliability and structural life of the first magnetic core 14 .

[0070] Please combine Figure 8 In one embodiment, the first magnetic core 14 may include multiple magnetic core blocks, which are spliced ​​into the first magnetic core 14. The arrangement of multiple magnetic core blocks is conducive to the release of stress of the first magnetic core 14 and improves the structural life and reliability of the first magnetic core 14.

[0071] For example, the first magnetic core 14 includes two magnetic core blocks, and the two magnetic core blocks form a circular first magnetic core 14. For another example, the first magnetic core 14 includes four magnetic core blocks, and the four magnetic core blocks are sequentially connected to form a circular first magnetic core 14.

[0072] In another embodiment, the first magnetic core 14 is an integrally formed structure, and a plurality of openings 142 may be formed on the first magnetic core 14 , and the plurality of openings 142 are arranged at intervals.

[0073] See also Figure 1 , Figure 2 and Fig. 9 The primary component 20 includes a second frame 21, a second winding 22, a second housing 23 and a second magnetic core 24. The second winding 22 is a primary winding, and the second magnetic core 24 is a primary magnetic core.

[0074] The second frame 21 is stacked with the first frame 11, and the second frame 21 includes a second plate 211 and a second annular protrusion 212. The second annular protrusion 212 is protruded on the surface of the second plate 211, and the second annular protrusion 212 is opposite to the first annular protrusion 112. The second winding 22 is wound around the second annular protrusion 212. The first winding 12 and the second winding 22 are stacked and are both located between the first plate 111 and the second plate 211. The second frame 21 is arranged on the side of the first frame 11 away from the rectifier circuit board 30.

[0075] The second plate 211 is formed with a second through hole 213 . A second annular protrusion 212 is protruded from an edge of the second plate 211 close to the second through hole 213 . The second winding 22 can be wound on the second annular protrusion 212 .

[0076] By setting the second skeleton 21 in the primary component 20, the position of the second winding 22 is raised, and the first skeleton 11 is set in the secondary component 10. The setting of the first skeleton 11 raises the position of the first winding 12, so that the gap between the first winding 12 and the second winding 22 is reduced, which is beneficial to reducing the leakage inductance of the first winding 12 and the second winding 22.

[0077] The second frame 21 further includes a second notch, which is disposed at an edge of the second plate body 211 away from the second annular protrusion 212 .

[0078] The structure of the second plate body 211 may be the same as that of the first plate body 111. In other words, the shape and number of the second notches may be the same as those of the first notches 114. The details will not be repeated here. Similarly, the second notches facilitate the flow of glue.

[0079] The second winding 22 includes a second output terminal 221; the second plate body 211 is provided with a second through hole, the second through hole passes through two opposite surfaces of the second plate body 211, and the second output terminal 221 is penetrated by the second through hole; and / or, the second annular protrusion 212 is provided with a second groove 214, the second groove 214 passes through two opposite surfaces of the second annular protrusion 212, and the second output terminal 221 is penetrated by the second groove 214.

[0080] In one embodiment, a second through hole is provided on the first board body 111 , and the second outlet terminal 221 passes through the second through hole and is connected to an external circuit board.

[0081] In another embodiment, the second annular protrusion 212 is provided with a second slot 214, the second slot 214 is connected to the second through hole 213, and the second outlet terminal 221 is connected to the external circuit board after passing through the second slot 214 and the second through hole 213. In addition, the second slot 214 is provided to release the stress of the second frame 21, thereby improving the reliability and structural life of the second frame 21.

[0082] The structure of the second skeleton 21 may be the same as that of the first skeleton 11. For example, a first through hole 115 is provided on the first plate body 111, and a second through hole is provided on the second plate body 211. The structure of the first plate body 111 is the same as that of the second plate body 211, and the structural dimensions of the first through hole 115 are the same as those of the second through hole. For another example, a first groove is provided on the first annular protrusion 112, and a second groove 214 is provided on the second annular protrusion 212. The structure of the first annular protrusion 112 is the same as that of the second annular protrusion 212, and the structural dimensions of the first groove are the same as those of the second groove 214. Of course, the structure of the second skeleton 21 may be different from that of the first skeleton 11.

[0083] The second housing 23 includes a second bottom plate 231, a third side wall 232 and a third accommodating cavity 233. The third side wall 232 is protruded from the second bottom plate 231. The third side wall 232 and the second bottom plate 231 enclose the third accommodating cavity 233. A third chamfered surface 2321 and a third glue pouring port 2322 are formed on the inner wall surface of the third side wall 232 facing the third accommodating cavity 233. The third chamfered surface 2321 is located at an end of the third side wall 232 away from the third accommodating cavity 233. The third glue pouring port 2322 is communicated with the third accommodating cavity 233. The third chamfered surface 2321 is located on the inner wall surface of the third side wall 232. The third chamfered surface 2321 is connected to the inner wall of the third glue pouring port 2322. The third chamfered surface 2321 is communicated with the third glue pouring port 2322. The second skeleton 21 and the second magnetic core 24 are stacked and both are accommodated in the third accommodating cavity 233.

[0084] The third side wall 232 is protruded from the surface of the second bottom plate 231 facing the first frame 11. The third side wall 232 and the second bottom plate 231 form a third accommodating cavity 233 on the side facing the first frame 11 in the thickness direction of the second bottom plate 231. The second frame 21, the second winding 22 arranged on the second frame 21, and the second magnetic core 24 are all accommodated in the third accommodating cavity 233.

[0085] The inner wall surface of the third side wall 232 is recessed to form a third glue filling port 2322, which connects two opposite ends of the third side wall 232 in the height direction of the third side wall 232. In the height direction of the third side wall 232, a third chamfered surface 2321 is formed at the end of the third side wall 232 away from the second bottom plate 231, and the third chamfered surface 2321 faces the inside of the third accommodating cavity 233.

[0086] The third side wall 232 is a circular ring structure, and a third chamfered surface 2321 is provided on a circle in the circumference of the third side wall 232. The third chamfered surface 2321 is located on the end of the third side wall 232 on the side away from the second bottom plate 231 in the height direction of the third side wall 232. The setting of the third chamfered surface 2321 increases the width of the gap between the third side wall 232 and the second magnetic core 24, and increases the flow space of the gap away from the side of the second bottom plate 231, which is beneficial to increase the fluidity of the glue. At the same time, the third chamfered surface 2321 is connected to the inner wall of the third glue filling port 2322, and the third glue filling port 2322 is connected to the third accommodating cavity 233, so that the gas in the third glue filling port 2322 is easier to be discharged; in addition, the setting of the third chamfered surface 2321 can also reduce the stress of the second housing 23, which is beneficial to improve the structural life of the second housing 23.

[0087] Part of the third glue filling port 2322 is located on the third side wall 232, and the other part of the third glue filling port 2322 is located on the second bottom plate 231. The outer contour of the third glue filling port 2322 is an L-shaped structure. The part of the third glue filling port 2322 on the second bottom plate 231 is beneficial to reducing the stress of the second bottom plate 231 and improving the structural life of the second bottom plate 231.

[0088] The second housing 23 also includes a fourth side wall 234, which is protruding from the second bottom plate 231, and the third side wall 232 surrounds the fourth side wall 234. On the side of the second bottom plate 231 facing the first winding 12 in the thickness direction, the third side wall 232, the fourth side wall 234 and the second bottom plate 231 together enclose a third accommodating cavity 233; the fourth side wall 234 is formed with a fourth chamfered surface 2341 and a fourth glue pouring port 2342 on the inner wall surface facing the third accommodating cavity 233, the fourth glue pouring port 2342 is communicated with the third accommodating cavity 233, the fourth chamfered surface 2341 is located on the inner wall surface of the fourth side wall 234, the fourth chamfered surface 2341 is connected to the inner wall of the fourth glue pouring port 2342, and the fourth glue pouring port 2342 is communicated with the third accommodating cavity 233.

[0089] The inner wall surface of the fourth side wall 234 is recessed to form a fourth glue filling port 2342, which connects two opposite ends of the fourth side wall 234 in the height direction of the fourth side wall 234. In the height direction of the fourth side wall 234, a fourth chamfered surface 2341 is formed at the end of the fourth side wall 234 away from the second bottom plate 231, and the fourth chamfered surface 2341 faces the third accommodating cavity 233, and the fourth chamfered surface 2341 is opposite to the third chamfered surface 2321.

[0090] The fourth side wall 234 is disposed on the surface of the second bottom plate 231 facing the first frame 11, and the third accommodating cavity 233 is opposite to the first accommodating cavity 133. The structure of the fourth glue injection port 2342 may be similar to that of the third glue injection port 2322, both of which are connected to the third accommodating cavity 233 to increase the entrance for injecting glue; the structure of the fourth chamfered surface 2341 may be similar to that of the third chamfered surface 2321, both of which face the third accommodating cavity 233, and are used to increase the gap between the fourth side wall 234 and the second magnetic core 24, improve the fluidity of the glue, and reduce the stress of the fourth side wall 234.

[0091] By providing the fourth glue filling port 2342 in combination with the third glue filling port 2322 , an inlet for injecting glue into the third accommodating cavity 233 is increased, which is beneficial to improving the efficiency of glue injection.

[0092] There are multiple third glue filling ports 2322 , which are spaced apart on the inner wall surface of the third side wall 232 ; and / or there are multiple fourth glue filling ports 2342 , which are spaced apart on the inner wall surface of the fourth side wall 234 .

[0093] The transformer 100 further includes a plurality of second buffers 50 . The plurality of second buffers 50 are disposed between the second magnetic core 24 and the second housing 23 and are spaced apart in the circumferential direction of the second magnetic core 24 .

[0094] The structure of the second buffer member 50 may be the same as that of the first buffer member 40 . Both the first buffer member 40 and the second buffer member 50 may be made of rubber material or other elastic materials.

[0095] Specifically, a plurality of second buffers 50 are disposed between the third side wall 232 and the second magnetic core 24. The plurality of second buffers 50 can reduce the stress in the primary component 20. The plurality of second buffers 50 can also fix the position of the second magnetic core 24 to control the relative position of the second magnetic core 24 and the second housing 23. It can be understood that the number of the second buffers 50 can be one.

[0096] Similarly, a buffer coating may be provided on the surface of the second magnetic core 24 , and the buffer coating may reduce the stress level of the second magnetic core 24 , thereby improving the reliability and structural life of the second magnetic core 24 .

[0097] The structure of the second magnetic core 24 may be similar to that of the first magnetic core 14 , except that the third through hole may not be provided on the second magnetic core 24 . It is understood that the third through hole may also be provided on the second magnetic core 24 to reduce the stress inside the second magnetic core 24 .

[0098] The potting glue (ie, glue) injected into the first accommodating cavity 133 , the second accommodating cavity 135 , and the third accommodating cavity 233 may be mixed with negative thermal expansion material to eliminate thermal stress during the glue injection process and during the operation of the transformer 100 .

[0099] The above are some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A transformer, characterized in that: The transformer comprises a first housing, the first housing comprises a first bottom plate and a first side wall, the first side wall is convexly arranged on the first bottom plate, the first bottom plate and the first side wall enclose a first accommodating cavity, the first side wall is formed with a first chamfered surface and a first glue injection port on the inner wall surface facing the first accommodating cavity, the first chamfered surface is located at an end of the first side wall away from the first accommodating cavity, the first chamfered surface is connected to the inner wall of the first glue injection port, and the first glue injection port is communicated with the first accommodating cavity; The first glue filling port is used for filling glue to fix the first magnetic core in the first accommodating cavity.

2. The transformer according to claim 1, characterized in that: The first housing also includes a second side wall, the second side wall is protruded from the first bottom plate, the first side wall surrounds the second side wall, the first side wall, the second side wall and the first bottom plate enclose the first accommodating cavity, the second side wall is formed with a second chamfered surface and a second glue pouring port on the inner wall surface facing the first accommodating cavity, the second chamfered surface is located at an end of the second side wall away from the first accommodating cavity, the second chamfered surface is connected to the inner wall of the second glue pouring port, the second glue pouring port is connected to the first accommodating cavity, and the second glue pouring port is used for glue pouring.

3. The transformer according to claim 2, characterized in that: The first chamfered surface is arranged opposite to the second chamfered surface.

4. The transformer according to claim 2 or 3, characterized in that: There are multiple first glue filling ports, and the multiple first glue filling ports are arranged at intervals on the inner wall surface of the first side wall; and / or, There are multiple second glue filling ports, and the multiple second glue filling ports are arranged at intervals on the inner wall surface of the second side wall.

5. The transformer according to claim 1, characterized in that: The transformer further includes a rectifier circuit board, and the rectifier circuit board is arranged on a side of the first housing away from the first accommodating cavity.

6. The transformer according to claim 5, characterized in that: The first housing also includes a second accommodating cavity, the first side wall passes through two opposite surfaces of the first bottom plate in the thickness direction, the first side wall and the other side of the first bottom plate in the thickness direction of the first bottom plate together enclose the second accommodating cavity, the second accommodating cavity and the first accommodating cavity are located on opposite sides of the thickness direction of the first bottom plate, and the rectifier circuit board is accommodated in the second accommodating cavity.

7. The transformer according to claim 1, characterized in that: The transformer further includes a first magnetic core, and the first magnetic core is accommodated in the first accommodating cavity.

8. The transformer according to claim 7, characterized in that: The transformer further includes a first buffer member disposed between the first magnetic core and the first housing.

9. The transformer according to claim 8, characterized in that: There are a plurality of first buffer members, and the plurality of first buffer members are arranged at intervals in the circumferential direction of the first magnetic core.

10. The transformer according to claim 7, characterized in that: The transformer further includes a first winding, and the first magnetic core surrounds the first winding.

11. The transformer according to claim 10, characterized in that: The transformer further comprises a first frame, the first frame comprises a first plate body and a first annular protrusion, the first annular protrusion protrudes out of the first plate body; The first winding is wound around the first annular protrusion.

12. The transformer according to claim 11, characterized in that The first frame also includes a first notch, and the first notch is arranged at an edge of the first plate body away from the first annular protrusion.

13. The transformer according to claim 11, characterized in that: The first winding includes a first output terminal; The first plate body is provided with a first through hole, and the first outlet terminal is passed through the first through hole; and / or, The first annular protrusion is provided with a first slot, and the first outlet terminal passes through the first slot.

14. A motor assembly, characterized in that: It comprises a motor and a transformer as claimed in any one of claims 1 to 13, wherein the motor is connected to the transformer.

15. A vehicle, characterized in that: Comprising the motor assembly as claimed in claim 14.

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