Electric compressor and air conditioner and vehicle having the same

Abstract

The utility model discloses a kind of electric compressor and air conditioner, vehicle with it, electric compressor includes: motor part and compression mechanism, the compression mechanism is driven by the motor part, to compress refrigerant, the motor part includes: stator assembly;Terminal box, the terminal box is located in the axial side of the stator assembly, and is located in the inside of the outer circumferential of the stator assembly;First electricity connection part, the first electricity connection part is set in the terminal box along first direction, for electrically connecting the stator assembly and external power supply, wherein, the first direction is perpendicular to the central axis of the stator assembly.Electric compressor according to the utility model embodiment has in not leading to electric compressor efficiency decline, not increasing shell size to ensure the compactness of compressor structure, using first electricity connection part provides reliable power supply connection between stator assembly and external power supply.

Description

Technical Field

[0001] This utility model relates to the field of electric compressor technology, and more specifically, to an electric compressor and an air conditioner and vehicle having the same. Background Technology

[0002] In order to supply power to the stator core, electric compressors in related technologies need to be equipped with an interface to connect to an external power source, which will increase the overall size of the electric compressor body. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an electric compressor that provides a reliable power supply connection between the stator assembly and an external power source using a first electrical connection part, without causing a decrease in the efficiency of the electric compressor or increasing the size of the housing to ensure the compactness of the compressor structure.

[0004] This utility model also proposes an air conditioner having the aforementioned electric compressor.

[0005] This utility model also proposes a vehicle having the aforementioned air conditioner.

[0006] An electric compressor according to a first aspect of the present invention includes a motor unit and a compression mechanism. The compression mechanism is driven by the motor unit to compress a refrigerant. The motor unit includes: a stator assembly; a junction box located on one side of the axial direction of the stator assembly and inside the outer periphery of the stator assembly; and a first power connection part disposed in the junction box along a first direction for electrically connecting the stator assembly to an external power source, wherein the first direction is perpendicular to the central axis of the stator assembly.

[0007] The electric compressor according to the present invention provides a reliable power supply connection between the stator assembly and an external power source by means of a first electrical connection part, without causing a decrease in the efficiency of the electric compressor or increasing the size of the housing to ensure the compactness of the compressor structure.

[0008] In addition, the electric compressor according to the above embodiments of the present invention may also have the following additional technical features:

[0009] According to some embodiments of the present invention, the stator assembly includes an insulating end plate located at the axial end, and the junction box is fixed to the insulating end plate.

[0010] According to some optional embodiments of the present invention, the junction box and the insulating end plate are integrally formed; or, the junction box and the insulating end plate are separately formed and fixedly connected.

[0011] According to some optional embodiments of the present invention, the stator assembly includes an insulating frame, and the insulating end plate is fixed to one side of the insulating frame along its axial direction.

[0012] According to some specific embodiments of this utility model, one of the insulating frame and the insulating end plate has a first buckle, and the other has a first slot that engages with the first buckle.

[0013] According to some embodiments of the present invention, an electric compressor is characterized in that it further includes: a housing, wherein the housing has a receiving groove, the receiving groove has a through hole, a junction box defines a placement groove and a first through hole, the junction box is located in the receiving groove and the through hole and the first through hole are directly opposite each other; a second power connection part, the second power connection part is disposed in the placement groove, the second power connection part is electrically connected to the stator assembly, the first power connection part is electrically connected to the second power connection part, and the first power connection part extends out of the housing along the first direction through the first through hole and the through hole.

[0014] According to some embodiments of the present invention, the junction box includes a housing portion and a cover portion, the housing portion and the cover portion together defining a placement groove for placing the second electrical contact portion, and the first through hole is provided in the cover portion.

[0015] According to some optional embodiments of the present invention, one of the cover portion and the housing portion has a second buckle, and the other has a second slot that engages with the second buckle.

[0016] According to some embodiments of the present invention, the extension direction of the placement groove has an angle θ with the central axis of the stator assembly, where 20°≤θ≤70°.

[0017] According to some embodiments of the present invention, a portion of the sidewall of the housing protrudes toward a direction away from the motor portion to define the receiving groove.

[0018] According to some embodiments of the present invention, the electric compressor further includes a connecting plate, which is disposed on the outside of the housing, and a plurality of first electrical contacts are fixed to the connecting plate; a first sealing member is provided between the connecting plate and the housing, and the first sealing member is disposed around the plurality of first electrical contacts.

[0019] According to some optional embodiments of the present invention, the outer shell is provided with a first sealing groove, and the first sealing element is located in the first sealing groove.

[0020] According to some specific embodiments of the present invention, the electric compressor further includes a plurality of second seals, each second seal being sleeved on the first electrical contact portion, and each second seal being used to seal the gap between the first electrical contact portion and the first through hole.

[0021] In some embodiments, the junction box has a plurality of annular protrusions on the sidewall facing the through hole, each of the protrusions being arranged around a corresponding first through hole, and the outer peripheral wall of the second seal contacting the inner wall of the protrusion.

[0022] In some embodiments, the end of the second seal facing the through hole abuts against the connecting plate.

[0023] In some examples, the housing is provided with a plurality of through holes, and the connecting plate is provided with a plurality of extended protrusions, each of the plurality of extended protrusions extending into a plurality of through holes respectively, and each of the second seals is engaged with the corresponding extended protrusion.

[0024] According to a second aspect of the present invention, an air conditioner is provided, the air conditioner including the electric compressor described in the first aspect of the present invention.

[0025] According to the embodiments of the present invention, the air conditioner, by utilizing the electric compressor described in the first aspect of the present invention, provides a reliable power supply connection between the stator assembly and the external power source using the first electrical connection part without causing a decrease in the efficiency of the electric compressor or increasing the size of the casing to ensure the compactness of the compressor structure.

[0026] A vehicle is provided according to a third aspect of the present invention, the vehicle including an air conditioner according to a second aspect of the present invention.

[0027] According to an embodiment of the present invention, a vehicle using an air conditioner according to an embodiment of the second aspect of the present invention provides a reliable power supply connection between the stator assembly and an external power source using a first electrical connection part without causing a decrease in the efficiency of the electric compressor or increasing the size of the housing to ensure the compactness of the compressor structure.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a schematic diagram of the structure of an electric compressor according to an embodiment of the present utility model;

[0031] Figure 2 This is a cross-sectional view of an electric compressor according to an embodiment of the present utility model;

[0032] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0033] Figure 4 This is an exploded view of the structure of the electric compressor according to an embodiment of the present utility model;

[0034] Figure 5 This is an exploded view of the junction box, the second power connection part, and the stator assembly according to an embodiment of the present utility model;

[0035] Figure 6 This is a structural cross-sectional view of the junction box and stator assembly according to an embodiment of the present utility model;

[0036] Figure 7 This is an exploded view of the junction box and insulating end plate according to an embodiment of the present utility model;

[0037] Figure 8 This is a schematic diagram of the junction box and insulating end plate according to an embodiment of the present utility model;

[0038] Figure 9 This is a structural schematic diagram of the housing and stator assembly according to an embodiment of the present utility model.

[0039] Reference numerals: 1. Electric compressor; 10. Housing; 11. Receiving groove; 12. Through hole; 13. First sealing groove;

[0040] 20. Motor section; 21. Stator assembly; 22. Insulating end plate; 221. First slot; 23. Insulating frame; 231. First buckle; 232. First connecting arm; 24. Stator core; 25. Rotor assembly; 26. Wire passage hole;

[0041] 30. Junction box; 301. Housing part; 302. Cover part; 31. Placement slot; 32. First through hole; 331. Second slot; 332. Second buckle; 333. Second connecting arm; 334. Plug-in slot; 34. Protrusion; 341. Second sealing groove;

[0042] 41. Second electrical contact part; 42. First electrical contact part; 43. Connecting plate; 431. Extending protrusion; 44. Fastener;

[0043] 51. First seal; 52. Second seal. Detailed Implementation

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0045] The electric compressor 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0046] like Figures 1-5 As shown, the electric compressor 1 according to an embodiment of the present invention includes a motor unit 20 and a compression mechanism, the compression mechanism being driven by the motor unit 20 to compress the refrigerant.

[0047] The motor unit 20 includes a stator assembly 21, a junction box 30, and a first power connection part 42. The junction box 30 is located on one side of the stator assembly 21 in the axial direction and inside the outer periphery of the stator assembly 21 to control the position of the junction box 30 on the stator assembly 21 so that the junction box 30 does not exceed the outer periphery of the stator assembly 21, thereby reducing the influence of the junction box 30 on the radial dimension of the motor unit 20 on the stator assembly 21.

[0048] At the same time, this makes it easier to make full use of the space on the inner side of the outer periphery of the stator assembly 21, and makes the structure of the electric compressor 1 more compact.

[0049] It should be explained here that the inner side and outer side are relative to the central axis of the stator assembly 21. The side of the outer periphery of the stator assembly 21 closer to the central axis of the stator assembly 21 is the inner side, and the part of the outer periphery of the stator assembly 21 further away from the central axis of the stator assembly 21 is the outer side.

[0050] The first power connection part 42 is disposed in the junction box 30 along the first direction and is used to electrically connect the stator assembly 21 and the external power supply. The first direction is perpendicular to the central axis of the stator assembly 21, which facilitates the introduction of electricity along the first direction, thereby making it convenient to use the first power connection part 42 to provide a stable power supply to the stator assembly 21, and at the same time, it helps to reduce the space occupied by the first power connection part 42 in the axial direction of the stator assembly 21.

[0051] Compared to the prior art where power is drawn along the axial direction of the stator assembly, this embodiment supplies power to the stator from a first direction perpendicular to the axial direction of the stator assembly 21, which helps to reduce the space occupied by the electric compressor 1 in the axial direction of the stator assembly 21, so as to make the structure of the electric compressor 1 more compact.

[0052] Meanwhile, this embodiment improves the position of the junction box 30 and the first power connection part 42, so as not to affect the size and position of the stator assembly 21, and not to affect the efficiency of the electric compressor 1.

[0053] According to an embodiment of the present invention, the electric compressor 1 provides a reliable power supply connection between the stator assembly 21 and an external power source using a first power connection part 42 without causing a decrease in the efficiency of the electric compressor 1 or increasing the size of the outer casing 10 to ensure the compactness of the compressor structure.

[0054] The electric compressor 1 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0055] In some specific embodiments of this utility model, such as Figures 1-5 As shown, the electric compressor 1 includes a motor unit 20 and a compression mechanism, which is driven by the motor unit 20 to compress the refrigerant.

[0056] In some embodiments of this utility model, such as Figure 2 As shown, the motor unit 20 also includes a rotor assembly 25, a stator assembly 21 is fitted over the rotor assembly 25, and the stator assembly 21 and the rotor assembly 25 are coupled to drive the rotor assembly 25 to rotate, thereby using the rotor assembly 25 to output rotational power.

[0057] The first power connection 42 provides a reliable power supply connection between the stator assembly 21 and the external power source, so that the stator assembly 21 can drive the rotor assembly 25 to rotate, and then the rotor assembly 25 outputs rotational power to the outside.

[0058] In some embodiments of this utility model, such as Figure 5 As shown, the stator assembly 21 includes an insulating end plate 22 located at the axial end.

[0059] The stator assembly 21 also includes a stator core 24 and a winding. The winding is located on the stator core 24. The first electrical connection part 42 is used to electrically connect the winding and the external power supply. The insulating end plate 22 is used to protect the axial end of the stator core 24 to reduce the possibility of leakage or interference in the stator assembly 21.

[0060] The junction box 30 is fixed to the insulating end plate 22 to fix the junction box 30 to the stator assembly 21. This eliminates the need to set a positioning groove / slot on the stator core 24, which can prevent the stator core 24 from becoming less permeable or less permeable due to the installation of the junction box 30 on the stator core 24. This helps to avoid a decrease in the efficiency and performance of the electric compressor 1.

[0061] In some embodiments, such as Figure 7 As shown, the insulating end plate 22 is provided with a wire-passing hole 26, which passes through the insulating end plate 22 along the axial direction of the stator assembly 21 to guide the wire to the winding, thereby realizing the electrical connection between the winding and the first contact part 42.

[0062] In some embodiments of this utility model, the junction box 30 and the insulating end plate 22 are integrally formed, which makes it easier to reduce the number of parts of the electric compressor 1, thereby reducing costs and assembly difficulty.

[0063] In some other embodiments of this utility model, the junction box 30 and the insulating end plate 22 are separately formed and fixedly connected, which facilitates the flexible setting of the position of the junction box 30 on the insulating end plate 22.

[0064] In some embodiments of this utility model, such as Figure 5 , Figure 6 As shown, the stator assembly 21 includes an insulating frame 23, and an insulating end plate 22 is fixed to one side of the insulating frame 23 along its axial direction.

[0065] The stator assembly 21 also includes a stator core 24, with windings disposed on the stator core 24. The first electrical connection part 42 electrically connects the windings and an external power source. The insulating frame 23 is used to isolate the stator core 24 from the housing 10, so as to protect the stator core 24 and the windings by using the insulating frame 23, thereby reducing the possibility of leakage or interference in the stator assembly 21.

[0066] In some optional embodiments of this utility model, such as Figure 5 , Figure 6 As shown, one of the insulating frame 23 and the insulating end plate 22 has a first buckle 231, and the other has a first slot 221 that engages with the first buckle 231, so as to snap and fix the insulating frame 23 to the insulating end plate 22, thereby fixing the junction box 30 to the stator assembly 21.

[0067] In some embodiments, such as Figure 6 As shown, the insulating frame 23 is provided with a first connecting arm 232, which is located at one end of the insulating frame 23 in a second direction and extends along the second direction. The second direction extends along the axial direction of the stator assembly 21. The end of the first connecting arm 232 is provided with a first buckle 231, and the insulating end plate 22 is provided with a first slot 221. When the insulating frame 23 and the insulating end plate 22 are brought closer together in the axial direction, the first buckle 231 extends into the first slot 221 and contacts the slot wall of the first slot 221. At this time, the first connecting arm 232 deforms under the force of the first slot 221 so that the first buckle 231 can smoothly extend into the first slot 221. When the first buckle 231 moves out of the first slot 221, the first connecting arm 232 returns to its original shape so that the first buckle 231 engages with the end wall of the slot opening of the first slot 221, thereby fixing the insulating end plate 22 onto the insulating frame 23.

[0068] In some embodiments of this utility model, the electric compressor further includes a housing 10 and a second power connection part 41. The housing 10 is provided with a receiving groove 11, and the receiving groove 11 is provided with a through hole 12. A junction box 30 defines a placement groove 31 and a first through hole 32. The junction box 30 is located in the receiving groove 11 and the through hole 12 and the first through hole 32 are directly opposite each other. The second power connection part 41 is disposed in the placement groove 31 and is electrically connected to the stator assembly 21. The first power connection part 42 is electrically connected to the second power connection part 41. The first power connection part 42 extends out of the housing 10 along a first direction through the first through hole 32 and the through hole 12 to facilitate the electrical connection between the external power supply and the part of the first power connection part 42 extending out of the housing 10, thereby transmitting current to the stator assembly 21 through the first power connection part 42 and the second power connection part 41.

[0069] Specifically, one end of the first electrical contact 42 is adapted to pass through the through hole 12 and the first through hole 32 into the placement cavity to be electrically connected to the second electrical contact 41 in the placement cavity, while the other end of the first electrical contact 42 is located outside the receiving groove 11 to be electrically connected to an external power source, thereby transmitting current to the stator assembly 21 through the first electrical contact 42.

[0070] In some embodiments of this utility model, such as Figure 5 , Figure 7 As shown, the junction box 30 includes a housing portion 301 and a cover portion 302. The housing portion 301 and the cover portion 302 together define a placement groove 31 for placing the second electrical contact portion 41. A first through hole 32 is provided in the cover portion 302 so that the housing portion 301 and the cover portion 302 together protect the second electrical contact portion 41, allowing the first electrical contact portion 42 to extend into the placement groove 31 from the first through hole 32 on the cover portion 302 for electrical connection with the second electrical contact portion 41.

[0071] In some optional embodiments of this utility model, such as Figure 7 As shown, one of the cover portion 302 and the housing portion 301 has a second buckle 332, and the other has a second slot 331 that engages with the second buckle 332. The second slot 331 engages with the second buckle 332 to fix the cover portion 302 onto the housing portion 301.

[0072] like Figure 7As shown, in this embodiment, the cover portion 302 is provided with a second connecting arm 333, the second connecting arm 333 has a second slot 331, the second connecting arm 333 extends along a first direction, and the housing portion 301 is provided with a second buckle 332. When the cover portion 302 and the housing portion 301 are brought closer together along the first direction, the second connecting arm 333 first contacts the second buckle 332 and is deformed by the force, so that the cover portion 302 moves into place along the first direction, so that the second slot 331 moves to the position corresponding to the second buckle 332, so that the second slot 331 extends into the second buckle 332. At this time, the second connecting arm 333 restores its deformation, so that the second buckle 332 on the housing portion 301 abuts against the groove wall of the second slot 331, thereby fixing the cover portion 302 and the cover portion 301 together.

[0073] In some examples, such as Figure 7 As shown, the housing portion 301 has a insertion groove 334, and the second buckle 332 is located on the groove side wall of the insertion groove 334. The second connecting arm 333 is inserted into the insertion groove 334 in the first direction, and the second buckle 332 on the second connecting arm 333 engages with the second buckle 332 on the groove side wall of the insertion groove 334.

[0074] The design includes a plug-in slot 334, which allows the second connecting arm 333 to be plugged into the slot 334. This facilitates the positioning of the cover portion 302 and the housing portion 301. At the same time, the sidewall of the plug-in slot 334 guides the movement direction of the second connecting arm 333, enabling the cover portion 302 to be quickly and accurately fixed on the top of the housing portion 301, thereby reducing installation difficulty and improving installation efficiency.

[0075] In some embodiments of this utility model, such as Figure 9 As shown, the extension direction of the placement groove 31 has an angle θ with the central axis of the stator assembly 21, where 20°≤θ≤70°. This allows the second electrical contact part 41 to be placed in the placement groove 31, thereby reducing the axial dimension of the second electrical contact part 41 in the stator assembly 21 and facilitating the reduction of the axial dimension of the electric compressor 1 in the stator assembly 21.

[0076] Where θ can be 20°, 30°, 40°, 50°, 60° or 70°.

[0077] In some embodiments, such as Figure 5 , Figure 9As shown, the electric compressor 1 includes multiple second electrical contacts 41 and first electrical contacts 42. The junction box 30 correspondingly defines multiple placement slots 31. The multiple placement slots 31 extend in the same direction and are arranged along a third direction, which is perpendicular to the first direction, so that the first electrical contact 42 can extend into the corresponding placement slot 31 along the first direction and be electrically connected to the second electrical contact 41 in the placement slot 31.

[0078] In some examples, the electric compressor 1 includes three second electrical contacts 41 and three first electrical contacts 42. The housing 10 has three through holes 12. The junction box 30 defines three placement slots 31. The three second electrical contacts 41 are respectively disposed in the three placement slots 31. The cover 302 has three first through holes 32. The first through holes 32 correspond one-to-one with the through holes 12 along a first direction. The three first electrical contacts 41 extend one-to-one into the placement slots 31 through the through holes 12 and the first through holes 32 to connect one-to-one with the second electrical contacts 41.

[0079] Among them, the three first electrical connection parts 42 constitute a three-phase terminal, namely W terminal, V terminal and W terminal.

[0080] In some embodiments of this utility model, such as Figure 1 As shown, a portion of the sidewall of the housing 10 protrudes away from the motor section 20 to define a receiving groove 11, providing suitable space for the position of the junction box 30 within the housing 10.

[0081] In this design, a portion of the sidewall of the housing 10 protrudes to define a receiving groove 11 that matches the junction box 30, thereby reducing the space occupied by the housing 10 and improving the utilization rate of the space inside the housing 10.

[0082] like Figure 1 As shown, in this embodiment, a portion of the outer casing 10 protrudes in a direction away from the motor section 20 along a second direction. The second direction extends along the axial direction of the stator assembly 21. The through hole 13 is located on one side of the receiving groove 11 in the first direction. The first electrical contact part 42 is adapted to extend into the placement groove 31 along the first direction through the through hole 13 and the first through hole 32 to electrically connect with the second electrical contact part 41 in the placement groove 31, thereby supplying power to the stator assembly 21.

[0083] The convex direction of a portion of the outer casing 10 and the extension direction of the through hole 13 are different, which helps to improve the compactness of the structure and thus reduce the space occupied by the electric compressor 1.

[0084] In some optional embodiments of this utility model, such as Figure 1As shown, the electric compressor 1 also includes a connecting plate 43, which is located on the outside of the housing 10. Multiple first electrical contacts 42 are fixed to the connecting plate 43 to connect the multiple first electrical contacts 42 together. This allows multiple first electrical contacts 42 to enter the placement groove 31 through the corresponding through hole 12 and the first through hole 32 at the same time, so as to be electrically connected to the corresponding second electrical contact 41. This facilitates the reduction of installation steps and the reduction of installation difficulty.

[0085] A first sealing element 51 is provided between the connecting plate 43 and the outer casing 10. The first sealing element 51 is arranged around a plurality of first electrical contact parts 42 to seal the gap between the connecting plate 43 and the outer casing 10 and prevent refrigerant leakage from the electric compressor 1.

[0086] The first seal 51 is arranged around the plurality of first electrical contacts 42 to isolate the refrigerant and the first electrical contacts 42, thereby reducing the possibility of leakage.

[0087] Specifically, the electric compressor 1 includes a motor unit 20 and a compressor. The gaseous refrigerant is located inside the outer casing 10. When the stator assembly 21 rotates, it drives the compressor to work. At this time, the compressor compresses the gaseous refrigerant, so that the first seal 51 seals the gap between the connecting plate 43 and the outer casing 10. On the one hand, this can prevent the refrigerant in the electric compressor 1 from entering the placement cavity through the first through hole 32, and on the other hand, it can prevent refrigerant leakage.

[0088] In some embodiments, such as Figure 1 As shown, the connecting plate 43 is fixed to the housing 10 by fasteners 44 to prevent the connecting plate 43 and the multiple first electrical contacts 42 on the connecting plate 43 from falling off. At the same time, the fasteners 44 are used to enhance the connection force between the connecting plate 43 and the housing 10 to press the first seal 51, and the first seal 51 is used to fully seal the gap between the connecting plate 43 and the housing 10.

[0089] Among them, fastener 44 can be a screw, pin or bolt, without much restriction.

[0090] In some specific embodiments of this utility model, such as Figure 2 , Figure 3 As shown, the outer casing 10 is provided with a first sealing groove 13, and the first sealing member 51 is located in the first sealing groove 13. The first sealing member 51 is confined in the first sealing groove 13 to limit the position of the first sealing member 51 and prevent the first sealing member 51 from sliding or deforming when it is subjected to pressure, so that the first sealing member 51 can fully seal the gap between the outer casing 10 and the connecting plate 43.

[0091] In some specific embodiments of this utility model, such as Figure 3 , Figure 4As shown, the electric compressor 1 also includes a plurality of second seals 52. Each second seal 52 is fitted over the first electrical contact part 42. Each second seal 52 is used to seal the gap between the first electrical contact part 42 and the first through hole 32, so as to prevent the refrigerant in the electric compressor 1 from entering the placement cavity through the first through hole 32, and to prevent the refrigerant from contacting the second electrical contact part 41, thereby reducing the possibility of leakage or short circuit of the second electrical contact part 41.

[0092] Specifically, the electric compressor 1 includes a motor part 20 and a compressor. The gaseous refrigerant is located inside the outer casing 10. When the stator assembly 21 rotates, it drives the compressor to work. At this time, the compressor will compress the gaseous refrigerant, so that the second seal 52 seals the gap between the first electrical connection part 42 and the first through hole 32, so as to prevent the refrigerant in the electric compressor 1 from entering the placement cavity through the first through hole 32.

[0093] In some specific embodiments of this utility model, such as Figure 3 , Figure 6 As shown, the junction box 30 has a plurality of annular protrusions 34 on the side wall facing the through hole 12. Each protrusion 34 is arranged around the corresponding first through hole 32. The outer peripheral wall of the second seal 52 contacts the inner wall of the protrusion 34 to limit the position of the second seal 52 and prevent the second seal 52 from being displaced when subjected to force, thus affecting the sealing effect of the second seal 52.

[0094] In some embodiments, such as Figure 7 As shown, the protrusion 34 defines the second sealing groove 341, the first through hole 32 is located at the bottom of the second sealing groove 341, and the second sealing member 52 is disposed in the second sealing groove 341 so as to limit the position of the second sealing member 52 by means of the second sealing groove 341.

[0095] In some specific embodiments of this utility model, such as Figure 3 As shown, the end of the second seal 52 facing the through hole 12 abuts against the connecting plate 43, so as to seal the gap between the first electrical contact part 42 and the connecting plate 43 by using the second seal 52, to prevent the refrigerant in the electric compressor 1 from leaking out from the gap between the first electrical contact part 42 and the connecting plate 43, to prevent the refrigerant from contacting the first electrical contact part 42, and thus to facilitate the prevention of short circuit or leakage of the first electrical contact part 42.

[0096] In some embodiments, such as Figure 1 , Figure 3As shown, the outer casing 10 is provided with multiple through holes 12, and the connecting plate 43 is provided with multiple extending protrusions 431. The multiple extending protrusions 431 extend into the multiple through holes 12 respectively. Each second seal 52 is abutted against the corresponding extending protrusion 431 to fully seal the gap between the extending protrusion 431 and the first electrical contact part 42, so as to prevent the refrigerant in the electric compressor 1 from leaking out from the gap between the first electrical contact part 42 and the extending protrusion 431, and to prevent the refrigerant from contacting the first electrical contact part 42, thereby facilitating the prevention of short circuit or leakage of the first electrical contact part 42.

[0097] In some examples, the connecting plate 43 is provided with a second opening opposite to the through hole 13, and an extension protrusion 431 defines a portion of the second opening. The first contact part 42 is adapted to extend into the placement groove 31 through the second opening, the through hole 13 and the first opening.

[0098] The end of the second seal 52 facing the through hole 12 abuts against the extended protrusion 431 to seal the gap between the inner wall of the second port and the first electrical contact part 42, thereby preventing the refrigerant in the electric compressor 1 from entering the second port, preventing refrigerant leakage, and preventing the refrigerant from contacting the first electrical contact part 42.

[0099] In some specific embodiments of this utility model, the electric compressor 1 includes a motor part 20 and a compressor, the compressor having a compression part, and the electric compressor 1 also includes a housing 10, a crankshaft assembly and an electronic control unit.

[0100] The motor unit 20 includes a stator assembly 21 and a rotor assembly 25, the rotor assembly 25 being fixed to the crankshaft assembly to drive the compressor unit via the crankshaft assembly.

[0101] The crankshaft assembly includes a crankshaft and an eccentric sleeve, the eccentric sleeve being eccentrically fixed to the crankshaft by a crank pin, and the crankshaft being rotatably connected to the housing 10 by a bearing.

[0102] The compression section includes a moving scroll and a stationary scroll. When the rotor assembly 25 rotates, the eccentric sleeve drives the moving scroll to move. Under the restriction of the anti-rotation mechanism, the moving scroll performs a revolution translation. The scroll teeth of the moving scroll and the stationary scroll mesh with each other to realize the refrigerant suction, compression and exhaust processes.

[0103] The compressor's suction port is connected to the system evaporator outlet via a pipeline, and the compressor's discharge port is connected to the system condenser inlet via a pipeline. Driven by the motor unit 20, the crankshaft rotates, driving the rotating scroll to revolve and translate, while the compression unit compresses the refrigerant. The refrigerant and refrigeration oil mixture is drawn into the suction side area, then through the suction channel into the compression chamber of the compression unit for compression, and discharged through the stationary scroll's discharge port into the stationary scroll's discharge area. It then enters the centrifugal oil separation area for oil-gas separation, and the refrigerant is discharged from the compressor through the compressor's discharge area, continuously circulating through the system.

[0104] In this process, due to centrifugal oil separation, the refrigeration oil is separated and collected in the oil storage area.

[0105] In some embodiments of this utility model, the electric compressor 1 further includes an inverter, which is used to convert DC power into AC power, thereby providing AC power to the stator assembly 21, enabling the stator assembly 21 to drive the rotor assembly 25 to rotate, so that the rotor assembly 25 drives the compression mechanism to work.

[0106] The first power connection 42 is electrically connected to the stator assembly 21 and the inverter, so as to provide a reliable power supply connection between the stator assembly 21 and the external power source.

[0107] Other configurations and operations of the electric compressor 1 according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0108] An air conditioner according to an embodiment of the present invention is described below. The air conditioner according to an embodiment of the present invention includes an electric compressor 1 according to the above embodiment of the present invention.

[0109] According to the embodiment of the present invention, the air conditioner, by utilizing the electric compressor 1 according to the above embodiment of the present invention, provides a reliable power supply connection between the stator assembly 21 and the external power source using the first power connection part 42 without causing a decrease in the efficiency of the electric compressor 1 or increasing the size of the outer casing 10 to ensure the compactness of the compressor structure.

[0110] Other components and operations of the air conditioner according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0111] The vehicle according to an embodiment of the present invention is described below. The vehicle according to an embodiment of the present invention includes an air conditioner according to the above embodiment of the present invention.

[0112] According to the vehicle of the present invention, by utilizing the air conditioner of the above embodiment of the present invention, a reliable power supply connection between the stator assembly 21 and the external power source is provided by the first power connection part 42 without causing a decrease in the efficiency of the electric compressor 1 or increasing the size of the outer casing 10 to ensure the compactness of the compressor structure.

[0113] Other components and operations of the vehicle according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0114] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, "above" or "below" a second feature may include direct contact between the first and second features, or it may include contact between the first and second features not being in direct contact but through another feature between them.

[0115] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0116] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0117] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0118] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric compressor, characterized in that, It includes a motor unit and a compression mechanism, wherein the compression mechanism is driven by the motor unit to compress the refrigerant. The motor unit includes: Stator assembly; A junction box, the junction box being located on one side of the stator assembly along its axial direction and inside the outer periphery of the stator assembly; A first electrical connection part, disposed along a first direction in the junction box, is used to electrically connect the stator assembly and an external power supply. Wherein, the first direction is perpendicular to the central axis of the stator assembly.

2. The electric compressor according to claim 1, characterized in that, The stator assembly includes an insulating end plate located at the axial end, and the junction box is fixed to the insulating end plate.

3. The electric compressor according to claim 2, characterized in that, The junction box and the insulating end plate are integrally formed; Alternatively, the junction box and the insulating end plate can be separately formed and fixedly connected.

4. The electric compressor according to claim 3, characterized in that, The stator assembly includes an insulating frame, and the insulating end plate is fixed to one side of the insulating frame along its axial direction.

5. The electric compressor according to claim 4, characterized in that, One of the insulating frame and the insulating end plate has a first buckle, and the other has a first slot that engages with the first buckle.

6. The electric compressor according to claim 1, characterized in that, Also includes: The housing has a receiving groove inside, the receiving groove has a through hole, the junction box defines a placement groove and a first through hole, the junction box is located in the receiving groove and the through hole and the first through hole are directly opposite each other; The second electrical contact is disposed in the placement groove and is electrically connected to the stator assembly. The first electrical contact is electrically connected to the second electrical contact and extends out of the housing along the first direction through the first through hole and the through hole.

7. The electric compressor according to claim 6, characterized in that, The junction box includes a housing portion and a cover portion, the housing portion and the cover portion together defining a placement groove for placing the second electrical contact portion, and the first through hole is provided in the cover portion.

8. The electric compressor according to claim 7, characterized in that, One of the cover portion and the housing portion has a second buckle, and the other has a second slot that engages with the second buckle.

9. The electric compressor according to claim 8, characterized in that, The extension direction of the placement slot has an angle θ with the central axis of the stator assembly, where 20°≤θ≤70°.

10. The electric compressor according to claim 6, characterized in that, A portion of the sidewall of the housing protrudes away from the motor unit to define the receiving groove.

11. The electric compressor according to any one of claims 6-10, characterized in that, It also includes a connecting plate, which is disposed on the outside of the housing, and a plurality of the first electrical contacts are fixed to the connecting plate; A first sealing element is provided between the connecting plate and the housing, and the first sealing element is arranged around a plurality of the first electrical contact parts.

12. The electric compressor according to claim 11, characterized in that, The outer casing is provided with a first sealing groove, and the first sealing element is located in the first sealing groove.

13. The electric compressor according to claim 11, characterized in that, It also includes a plurality of second seals, each of which is fitted over the first electrical contact portion and is used to seal the gap between the first electrical contact portion and the first through hole.

14. The electric compressor according to claim 13, characterized in that, The junction box has a plurality of annular protrusions on the sidewall facing the through hole, each of the protrusions surrounding the corresponding first through hole, and the outer peripheral wall of the second seal contacts the inner wall of the protrusion.

15. The electric compressor according to claim 13, characterized in that, The end of the second seal facing the through hole abuts against the connecting plate.

16. The electric compressor according to claim 15, characterized in that, The outer casing is provided with a plurality of through holes, and the connecting plate is provided with a plurality of extended protrusions. The plurality of extended protrusions extend into the plurality of through holes in a corresponding manner, and each of the second seals is engaged with the corresponding extended protrusion.

17. An air conditioner, characterized in that, The electric compressor included in any one of claims 1-16.

18. A vehicle, characterized in that, Including the air conditioner as described in claim 17.

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